eChapters

Introduction
For setting up a fruit processing plant, the following cost and non-cost factors affecting the plant’s location are considered. Cost factors include raw material cost, transportation cost, cost of land, building and machinery, utilities cost, taxes, and insurance costs. At the same time, non-cost factors consisting of wages, salaries and incentives, market potential, community attitude, cost regulation, quality of life (school, living, recreation for workers, etc.), and environmental impact are taken into consideration. The main objective for the selection of the site for the processing unit is to minimize the sum of all costs. To minimize the cost, one should think not only the today’s costs but about long-term costs as well.
Plant Layout
The advantages of good plant layout are: -
i. Saving in floor space
ii. Increased output
iii. Fewer production delays
iv. Reduced material handling cost
v. Greater utilization of machine and manpower
vi. Easier and better supervision
vii. Less congestion and confusion
viii. Better appearance and more sanitary condition of work areas
ix. Reduced risk to the health and safety of employees

HACCP: The Hazard Analysis and Critical Control Points (HACCP) is a scientific, rational and systematic approach to identify, assess and control hazards during production, processing, manufacturing and use of food. It ensures safety of the food. HACCP presents a good opportunity for the food industry for upgrading quality and bringing uniformity and consistency in their supplies to international market. or It is a systematic preventive approach to food safety that addresses physical, chemical and biological hazards as a mean of prevention rather than finished product inspection. It involves identification, evaluation and control of hazards which are significant for food safety.

HACCP plan: A document prepared in accordance with the principles of HACCP to ensure control of hazards which are significant for food safety throughout the food chain under consideration.

Haemagglutinins: A group of proteins of plants that are not antibodies and do not originate in an immune system but bind specifically to carbohydrate containing receptors on cell surfaces (red blood cells). It is also known as Phytoagglutins / lectins.

Introduction

Over centuries, spices have been used as an important addendum for colour, flavour and preservation of foods. In addition, their medicinal and cosmetic utilities have been widely recognized (Purseglove et al., 1981; Srinivasan, 2005). All these benefits made them extremely desirable with an ever growing demand in the international market. India holds the title of the largest producer and exporter of spices with major share for pepper, capsicum, turmeric, ginger cardamom, seed spices, curry powders, spice oils and oleoresins. The other primary producers of spices includes China, Indonesia, Malaysia, Egypt, Turkey Brazil and Mexico while USA, Europe, Japan, East Asian and Middle East countries are their major importers.

Spices are made from diverse plant parts viz. rhizomes, barks, leaves, fruits and seeds and hence its processing methods vary depending on the raw material. However, the basic unit operations namely harvest, pre-treatment, drying, cleaning, particle size reduction, packaging and microbial decontamination in sequence remains common for the production of most of the spices. Inappropriate conduct of basic unit operations often lead to high microbial load, aflatoxin contamination, losses of valuable compounds, change in sensory characteristics, physical damages and incorporation of contaminants in spice products (Table 1). Moreover, spices being natural products, they may be fraught with a large number of microorganisms including several pathogenic species of bacteria and fungus depending on the prevailing conditions in their cultivation areas. In addition, poor food sanitation awareness and practices in spice producing countries may worsen their microbiological safety. Although spices are nonperishable in nature due to their low moisture contents after drying, they may act as a source of microbial populations upon contact with moist food products with no further thermal treatment. The outbreak of ‘salmonellosis’ in Germany (1993) due to contaminated paprika and paprika-powdered potato chips is an example. The aforesaid disadvantages related to conventional spice production may confound their international trade unless desired objectives of food safety management schemes such as International Commission on Microbiological Specifications for Foods (ICMSF) are met. Moreover, international agencies have set standard to guarantee safe spices and augment business interests of their adherents. For example, both the European Spice Association (ESA, 2015) and American Spice Trade Association have set a maximum level of 1% w/w extraneous matter in spices (ASTA, 2017). These challenges associated with the conventional production system may be effectively addressed by preventive risk management strategy by which suitable control measures are enforced at earlier phases of food chain prior to consumption. The control measures must guarantee that the level of contamination has not exceeded the maximum permissible limit at every phase of spice production from farm to table.

Introduction

Use of acid/base is common in laboratories for experiments like titration and proper safety in their handling laboratory is necessary. In this chapter we will briefly discuss about the safety measures necessary to be adopted while using acids/bases in laboratory for any experiment.

Handling of Strong Acid/Base

There are four major points that need to be taken care of while working with strong acids or bases that might be quite harmful if any accident happens.

1. Protect Yourself

Wear a lab-coat and acid-resistant gloves: Always use lab-coat/apron and make it sure that the sleeves properly cover your arms. More importantly, use gloves made of acid-resistant materials and also wear shoes to protect your feet while wearing long-pants/jeans. Female with long hair, must tie her hair properly (with rubber band) to avoid any disturbance caused by appearance in between.

Wear safety goggles: It is important to wear safety goggles to protect your eyes using larger and fitting goggles that cover front as well as sides of your eyes. Always use properly fitting and adjustable goggles because smaller/ loose goggles may not protect the areas around your eyes against accidental acid spills and it may fall down from your face, if it is too loose.

Locate emergency wash area: There must be an emergency washing area nearby the work place or laboratory containing lab spill management kits. All the workers in the laboratory must be aware of using the kits and emergency plans.

Neutralize acid: Don’t panic even if an acid or chemical spill happens. Stay calm and act as quickly as possible. In case an acid spills, neutralize it by using sodium bicarbonate so that they can be cleaned and disposed safely. If acid comes in contact of skin, wash it off under running tap water but do not use/ apply sodium bicarbonate on skin.

Introduction

For proper and efficient experiment to be conducted, experimenters need so many chemicals to deal with. This includes different acids, base, salt, different kind of indicators and so on. Some of these chemicals are safe for health, but some of them are dangerous to health when come in close proximity to our body while some of the chemicals cause health issues on inhaling. These may cause improper functioning of some of our physiological activities. Acids and bases are very dangerous for our tissues when come in our contact. These may cause serious respiratory problem in addition to injuries on coming to our contact. Some chemicals are exploratory yet they may cause even death of the person working with them in laboratory. Therefore, mere use of the chemicals in laboratory is not only the objective of the experimenter. The person working in laboratory should also be concerned about the proper use and handing of the chemical while working with it. Thus, every researcher of an institution who has to work with chemicals in a laboratory should be made aware about the chemicals to be used in the laboratory and the consequences if any mishandling of a laboratory chemical occurs. Not only these, suitable precautionary measures should also be known to the researcher along with ensuring the availability of the required safety equipment/installations. Hence, a proper understanding of the ways of handling of chemicals in a laboratory is of prime importance for the personals like you who are working or have to work in laboratory.

Safe Handling of Chemicals in Laboratory

Safe use/handling of chemicals in laboratory include minimized exposure to chemicals, maintaining safety data sheets, proper labelling, storage, segregation, and transport of chemicals for personal hygiene.

Introduction

We come across a variety of chemicals every day in a laboratory. While some of them are relatively safer, others are extremely hazardous. Thus, it is very important to know the potential hazards that can be caused by the chemicals present in the laboratory and the safety measures needed to be followed to avoid the hazards. Additionally, we should also be aware of the steps necessary to be taken on such hazardous situations. According to IUPAC, a hazardous chemical mean the chemical which has the potential to cause damage in various ways. In a laboratory, there are chemicals that might be irritant, carcinogen, respiratory fibrogen, systemic poison, asphyxiant, flammable, etc. which have the potential to cause hazard to the workers or environment. Therefore, it is important to use appropriate procedure to reduce the risk and protect the health/safety of laboratory personnel, the public and the environment.

Types of Hazards Associated with Chemicals

Chemical hazards: The hazards caused by chemicals can be broadly classified into three categories.

1. Health hazard: This is also known as toxic effects of chemical. The risk associated with a chemical in laboratory depends on the extent of exposure and the inherent toxicity of the chemical. Many chemical reactions form the product that might be much more toxic than the reacting chemicals. For example, inadvertent mixing of formaldehyde (a common tissue fixative) and hydrogen chloride results in the generation of bis(chloromethyl) ether, a potent human carcinogen. For most of the chemicals, the route of exposure (through skin, eyes, gastrointestinal tract, or respiratory tract) is more important (Figure 17.1) that must be considered during risk assessment.

In India, the collection, transport and distribution of raw milk involves a number of agencies and persons at rural and urban level – village producers, milk collectors, halwais (Sweet-makers), milk vendors, dairies, producer-retailers and wholesale or retail markets.

1. Collection

Usually, the milk collectors approach the small village producers to collect milk and the same is sold directly or indirectly (through agents) to a dairy (milk procurement centres) or halwais or city milk vendors or consumers. The producer – retailers themselves, in some cases, supply the milk to the above said parties. The production of milk in small, scattered holdings in village causes problems during its collection. It involves visits to many villages, some of which are not easily accessible for the purpose.

1. INTRODUCTION

Every fruit or vegetable is harvested keeping in view, its intended use. At what stage it should be harvested, is indicated by the maturity index. The chapter focuses on these and postharvest quality of fruits and vegetables.

2. FRUIT MATURITY

"Maturity of a fruit can be defined as that stage at which a commodity has reached a sufficient stage of development that after harvesting and postharvest handling, its quality will be at least the minimum acceptable to the ultimate consumer”. Maturity is of two types:

Post-Harvest Losses

A post-harvest loss is defined as the measurable qualitative and quantitative food (including fruits and vegetables) loss along the supply chain, starting at the time of harvest till its consumption or other end uses (Hodges et al., 2011). Pineapple fruits are highly perishable in nature and continuously respired even after harvesting which limited its shelf-life leading to the storage problems (Hossain and Bepary, 2015) and decline in production due to post-harvest losses (Babalola et al., 2008). During the storage for distant marketing, pineapple fruits easily losses its moisture content through transpiration and become more susceptibility to microbial spoilage (Hossain and Bepary, 2015). In India the top five leading pineapple producing states are West Bengal, Assam, Karnataka, Meghalaya and Manipur (Anonymous, 2018). The measurable qualitative and quantitative losses of pineapple at post-harvest level are from the various stages of handling from the farm level up to the consumers (Table 1 and 2).

The food is considered as one of the essential for the maintenance of life. Manufacturing of the food product is not enough form the food industry. It is necessary that the food available is safe, hygienic; wholesomeness and its quality must be assured. The food industry is an important segment of industries in India and has its own peculiarities unlike other industries. Food processing industry has been recognized by government as a major sector of growth. It must be free from harmful additives, microbes and remain so for a period, it is intended to be consumed. Therefore, the methods employed in quality and food safety assurance programme within the food industry will vary considerably in accuracy and sophistication according to the type of process and size and nature of resources available. Since the international market has become demanding in terms of quality, safety and delivery, installation of Hazard Analysis Critical Control Point (HACCP) in food industry would provide a competitive edge to food supplies in the international market. Food control refers to all activities carried out to ensure the quality, safety and honest presentation of the food at all stages from primary production through processing and storage, to marketing and consumption. The term has been used to describe a total national effort involving an integrated approach between government and all segment and sectors of the food industry. Food control is linked to improvement in the health of the population, potential of a country’s economic development and reduction of spoilage and food losses.

A wide variety of quality determinants is employed, including size, colour, maturity and extent of blemishes. Quality is a measure of the degree of excellence or degree of acceptability by the consumer. The marketing of fresh fruit and vegetables is aimed eventually ay appealing to the consumer for whom tradition plays a major role in determining the acceptability of a food item. The eating habits of people are conservative. The increase of direct market from producer to supermarket chains is leading to the imposition of standards to predetermined specification by the supermarkets. Important factors in quality for the consumers are: appearance, including size, colour, shape, condition and absence of defects, texture, flavour and nutritional value. Quality is the ultimate criterion of the desirability of any food product to the consumer. The overall quality of food depends on the nutritional and other hidden attributes. Quality of foods can be defined as the ‘composite’ of the ‘characteristics’ that differentiate individual units of a product and have significance in determining the degree of acceptability of that unit by the buyer.

Food packaging serves to protect products throughout their journey from production to consumption. However, packaging is often exposed to a variety of hazards during transportation and storage that can compromise its effectiveness and, ultimately, the quality and safety of the food inside. Understanding these hazards is essential for designing packaging solutions that can withstand the physical, environmental, and atmospheric challenges encountered along the supply chain. This chapter examines the types of hazards that affect food packaging during transportation and storage, focusing on the ways in which these factors impact packaging integrity, food quality, and consumer safety. By exploring mechanical hazards, environmental influences, and atmospheric interactions, this chapter provides insights into the crucial role that resilient packaging plays in safeguarding food from production to point-of-sale.

Introduction

Food Safety is the assurance that food is acceptable for human consumption according to its intended use. The slogan of the World Food Safety Day 2019 “If it’s not safe - it’s not food!” portray, unsafe food is a threat to mankind. Ensuring food safety to protect public health and promote economic development is of utmost importance and it remains a significant challenge in both developing and developed countries. Food borne diseases remain a real and formidable problem, causing great human sufferings and significant economic losses. According to WHO 2019-20 World Water Day report, one third of the population of developed countries may be affected by food-borne diseases each year and the problem is likely to be even more wide spread in developing countries, where food and water borne diarrhoeal diseases kill an estimated 2.2 million people each year, mostly children. While unacceptable rates of food borne illness still remain, new hazards continue to enter the food supply.

A food safety hazard refers to any agent with the potential to cause adverse health consequences for consumers. It occurs when food is exposed to hazardous agents which result in contamination of food. In other terms it can be defined as anything that could contaminate food or could otherwise violate established food safety program criteria, if left uncontrolled. The National Advisory Committee on Microbiological Criteria for Foods (NACMCF, 1997) defined a hazard as a “biological, chemical, or physical agent that is reasonably likely to cause illness or injury in the absence of its control”.

A hazard may be introduced into the food supply any time during harvesting, formulation and processing, packaging and labelling, transportation, storage, preparation and serving. Food safety hazards are generally categorized into four classes: Physical, chemical, biological and allergens. Food manufacturers can adopt Food Safety Management Systems (FSMS), which include Good Manufacturing Practices (GMP), Good Hygiene Practices (GHP), Hazard Analysis and Critical Control Point (HACCP) and other practices to strictly check the hazards and make the food safe.

Understanding the hazards that contribute to food borne illness and injury is important to determine the necessary steps to prevent or reduce it to an acceptable level or eliminate hazards altogether before food reaches the consumer.

General Signs of Healthy and Ill Animals

Health

It is a state of freedom from disease. It may also be stated as a condition of an animal in which all the body organs are normal and are functioning to their optimum capacity in relation to animal’s age, sex, work, and production with optimum pulse, temperature and respiration rates appropriate to the species, sex and environment.

Disease

Disease may be any deterioration from normal health or normal functioning of any or all the tissues or organs of animal body. Thus, it shuns animal to perform its normal physiological functions though the nutritional and environmental parameters are maintained normal.

Abstract

Health-conscious consumers are increasingly seeking functional foods in an effort to control their own health and well-being. The field of functional foods, however, is in its infancy. Claims about health benefits of functional foods must be based on sound scientific criteria. A number of factors complicate the establishment of a strong scientific foundation. These factors include the complexity of the food substance, effects on the food, compensatory metabolic changes that may occur with dietary changes, and, lack of surrogate markers of disease development. Additional research is necessary to substantiate the potential health benefits of those foods for which the diet-health relationships are not sufficiently scientifically validated. Research into functional foods will not advance public health unless the benefits of the foods are effectively communicated to the consumer. Finally, those foods whose health benefits are supported by sufficient scientific substantiation have the potential to be an increasingly important component of a healthy lifestyle and to be beneficial to the public and the food industry. Mounting evidence supports the observation that functional foods containing physiologically-active components, either from plant or animal sources, may enhance health. It should be stressed, however, that functional foods are not a magic bullet or universal panacea for poor health habits. There are no “good” or “bad” foods, but there are good or bad diets. Emphasis must be placed on over-all dietary pattern, which follows the current Dietary Guidelines, and is plant-based, high in fiber, low in animal fat, and contains 5-9 servings of fruits and vegetables per day.

Abstract

The objective of this chapter is to provide an overview of heat pump dryer (HPD) and recent developments in its applications for drying of agricultural and food products. The basics of heat pump dryer, classification, operating principle, configuration and control system have been presented for better understanding. Many researchers have concluded that HPDs use energy more efficiently than electrical dryers. The heat pump dryer is best suited for drying high value commodities such as fruits, vegetables, spices, condiments, herbs, medicinal and aromatic plants at near ambient temperature for producing better quality dehydrated product.

3.1 Introduction

The subject of heat transfer is firmly grounded in the sciences of thermodynamics and fluid mechanics. It has become exceedingly important for engineers to possess a clear understanding of the principles of heat transfer and its application to a large number of problems. In view of process engineering, the knowledge of heat transfer and its application is most important, because heat transfer is one of the basic unit operations in the agricultural processing activities. The design of process equipments, refrigerators, boilers or type of heat exchangers, thermal treatment of food grains, cooling of perishables, pasteurizations, sterilizations, freezing of milk and fruit juices and a large number of similar applications involve consideration of heat transfer rates. There may be other situations where heat is being generated during a certain operation, and may be detrimental to the equipment and the food product. In such cases we are often faced with the task of removing the undesirable amount of heat as far as possible.

SYNOPSIS

Flavor is the sensory impression of a food or other substance, and is determined mainly by the chemical senses of taste and smell. The flavor of the food, as such, can be altered with natural or artificial flavorings which affect these senses. Smell is the main determinant of a food item’s flavor. While the taste of food is limited to sweet, sour, bitter, salty, umami (savory), pungent or piquant, and metallic – the seven basic tastes – the smells of a food are potentially limitless.

1. Herbs and Spices
       
    1.    International Standards Organization (ISO) defines spices and condiments as: Vegetable products or mixtures thereof, free from extraneous matter, used for flavouring, seasoning and imparting aroma in foods.

    2.    Rosengarten describes a spice as a product which enriches or alters the quality of a thing, for example altering the taste of a food to give it zest or pungency; a piquant or lasting flavouring; or a relish. The term ‘spice’ is thus used to cover the use of spices, herbs and certain aromatic vegetables to impart odour and flavour to foods.

    3.    Herbs may be defined as the dried leaves of aromatic plants used to impart flavour and odour to foods with, sometimes, the addition of colour. The leaves are commonly traded separately from the plant stems and leaf stalks.

This alternative pathway for glucose oxidation has enzymes in the cytosol through which glucose is degraded to carbon dioxide. It is also called a shunt because carbon atoms from glucose 6-phosphate take a long route before they proceed down the EMP or glycolytic pathway. This pathway is anabolic in nature as it produces many intermediates. In this pathway, two NADPH are generated from one glucose 6-phosphate molecule. No ATP is generated or consumed.
Overall, this pathway needs three glucose-6-phosphate molecules to complete all the reactions. Therefore, one cycle run produces 2 mol of fructose-6- phosphate, 1 mol of glyceraldehyde-3-phosphate, and 3 mol of carbon dioxide from 3 mol of glucose-6-phosphate with the reduction of 6 mol of NADP+ to NADPH.
Overall reactions of the HMP pathway are as follows:
3 Glucose-6-P + 6 NADP+→ 3 ribulose-5-P + 3 CO2 + 6 NADPH
3 Ribulose-5-P → 2 xylulose-5-P + Ribose-5-P
2 Xylulose-5-P + Ribose-5-P → 2 fructose-6-P + Glyceraldehyde-3-P

The art in producing high-boiled sweets with satisfactory shelf life is manufacturing boilings which contain the minimum amount of residual moisture and a satisfactory balance between cane or beet sugar, and glucose syrup or invert sugar syrup. The main physical change during the storage of high-boiled sweets is the formation of small crystals in the confection, usually referred to as graining, due to recrystallisation of sucrose. These spoil the appearance and cause an unpleasant roughness on the tongue.

For high-boiled sweets it is impossible, using the normal proportions of cane or beet sugar (sucrose) and glucose syrup, to obtain a product of 97% solids content, which is not supersaturated with respect to sucrose.

In practice, however, one-and-a-half parts of sugar (sucrose) to one part of forty-two DE glucose syrup will produce a high-boiled sweet stable against graining.

1. Introduction

Fruit products have their unique identities having large content of micronutrients, polyphenols, vitamins, flavonoids and other nutritional compounds. Characteristic appearance and flavors distinguish among various fruit based products like juice, puree, jam, jelly, squash and other several varieties. Main concern of this fruit processing industry is the stability of the products throughout the post processing storage. Thermal treatment as mean of preservation of these products is the common process implemented so far. It ensures the safety of the product but lacks in retaining the nutritional intact that like of fresh fruit. Today’s consumer demand for minimally processed fruit products and “natural” fruit products tend to think of alternative thermal processing.

High pressure processing (HPP), a relatively new concept compared to conventional thermal processing, also sometimes known as high hydrostatic pressure (HHP), or ultra high pressure (UHP) processing, is a non-thermal food processing method that subjects liquid or solid foods, with or without packaging, to pressures ranging between 50 and 1000 MPa. HPP has already been established itself as an alternative to thermal processing. In food processing it is of great interest due to its ability to inactivate food borne microorganisms and enzymes, at low temperature, without the need for chemical preservatives and it is less detrimental than thermal processes to low molecular weight food compounds such as flavoring agents, pigments, vitamins, etc., as covalent bonds are not affected by pressure. Pressure-treated foods have sensory properties similar to fresh products, which is a major advantage in fruit processing as it matches consumer demand for healthy, nutritious and ‘‘natural’’ products. HPP of fruit products offers the chance of producing food of high quality, greater safety and increased shelf life (Hayashi 1989; Gould 1996; Butz and Tauscher 1998).

4.1 Introduction

The purpose of processing the food is to make it safe and healthy for human consumption. The term food processing refers technologically anything, which transforms raw ingredients into consumer ready products, with the aim of stabilizing food products by preventing or reducing deteriorative changes in quality. The objective of food manufacturers is to develop, modify and employ those processing technologies that retain or create desirable sensory qualities in food and eliminate or reduce undesirable changes due to processing.

The purpose of food processing is to increase the shelf life of food before spoiling (preservation); to remove, destroy or inhibit pathogens and toxins (food safety); to change flavor, texture, aroma, color or form (variety); to reduce preparation times and make food more portable (convenience); to restore and/or raise nutrient levels in food (nutrition).The various food processing methods used extensively in food industry include physical (high temperature, freezing, chilling, dehydration, packaging), chemical (control of storage gases, reduction of water activity, pH, addition of chemical additives or spices) preservation methods.

Traditionally, food preservation has been associated with thermal treatments alone or in combination with biochemical or chemical methods. For example, the thermal processing of milk is done various thermal treatments viz. at 63^oC for 30 min for low temperature long time (LTLT), 72^oC for 15 seconds for high temperature short time (HTST) pasteurisations and up to 140^oC for a few seconds for ultra high temperature (UHT) treatment. However, such thermal treatments effectively reduce level of microorganisms but in long-term preservation, it may lead to losses of desired organoleptic attributes and destruction of temperature liable nutrients and vitamins. The limitations involved with thermal processing has been overcome by employing chemical preservation, cool chain management and process hygiene in the formulation and production of food products.

Food and nutrition are necessary for all living beings to maintain good health[1]. Thermal treatment is commonly used for preservation of food. Although application of thermal treatment can ensure food safety, it may cause undesirable changes in the nutritional, sensory and functional properties of food products[2]. Due to growing awareness of connection between the diet and the health, there is an increase in demands for fresh-like, palatable, additive-free and microbiologically safe food products with high nutritional value and quality[3].

Ice cream has evolved from simple frozen preparations into a sophisticated food industry combining dairy science, food chemistry, refrigeration, microbiology, processing technology, packaging, and cold-chain management. This chapter introduces the historical development of ice cream and explains its transformation from a luxury product into a widely consumed frozen food. It examines the characteristics of the industry, major categories of ice cream and related frozen products, flavour classifications, composition, and quality characteristics. The chapter also presents the basic manufacturing process, important quality-control parameters, common manufacturing challenges, and emerging industry trends, providing a foundation for understanding ice cream as both a technical product and a commercial business.

Microorganisms (or microbes) are organisms too small to be seen with the naked eye. The science of microbiology is the study of microorganisms, their properties, classification, growth requirements, method of reproduction and distribution in nature. These organisms range in size from tiny viruses to larger bacteria, protozoa, algae, fungi and some of the microscopic worms (helminthes). They are present everywhere in our environment, in our homes, on our bodies, on the things we touch and on the food we eat. They are important for human survival on Earth, playing an essential role in many processes that maintain life. In nature, microorganisms carry out a number of important functions.

1.They are responsible for the decomposition of organic matter.

2.Recycling of nutrients that help to maintain the balance of chemicals in the soil.

3.Special nitrogen-fixing bacteria live symbiotically with certain plants, absorbing nitrogen from the air and converting it into compounds which can be used by the plant for growth.

4.Some algae are capable of photosynthesis, using energy from the sun to convert carbon dioxide in air into carbohydrate.

5.Marine microorganisms form the basis of the food chain in lakes, rivers and oceans.

6.Certain microorganisms are used in the manufacture of food.

7.Pharmaceuticals and drugs.

8.Industrial processes.

9.A valuable tool for scientific research.

10.Use in laboratory experiments to understanding metabolic pathways and in the discovery of the genetic code.

Bakery Industry

Baked goods have been around for thousands of years. The art of baking was developed early during the Roman Empire. It was a highly famous art as Roman citizens loved baked goods and demanded for them frequently for important occasions such as feasts and weddings etc. Due to the fame and desire that the art of baking received, around 300 BC, baking was introduced as an occupation and respectable profession for Romans. The bakers began to prepare bread at home in an oven, using mills to grind grain into the flour for their breads. The oncoming demand for baked goods vigorously continued and the first bakers’ guild was established in 168 BC in Rome. This drastic appeal for baked goods promoted baking all throughout Europe and expanded into the eastern parts of Asia. Bakers started baking breads and goods at home and selling them out on the streets.

This trend became common and soon, baked products were getting sold in streets of Rome, Germany, London and many more. This resulted in a system of delivering the goods to households, as the demand for baked breads and goods significantly increased. This provoked the bakers to establish a place where people could purchase baked goods for themselves. Therefore, in Paris, the first open-air bakery of baked goods was developed and since then, bakeries became a common place to purchase delicious goods and get together around the world. By the colonial era, bakeries were commonly viewed as places to gather and socialize.^[2] World War II directly affected bread industries in the UK. Baking schools closed during this time so when the war did eventually end there was an absence of skilled bakers. This resulted in new methods being developed to satisfy the world’s desire for bread. Methods like: adding chemicals to dough, premixes and specialized machinery. Unfortunately these old methods of baking were almost completely eradicated when these new methods were introduced and became industrialized. The old methods were seen as unnecessary and financially unsound, during this period there were not many traditional bakeries left.

Bakery is a traditional activity and occupies an important place in food processing industry. The bakery manufacturers in India can be differentiated into the three broad segments of bread, biscuits and cake. About 1.3 million tonnes of the bakery products industry in India is in the organized sector out of 3 millions tonnes, while the balance comprises of unorganized, small-scale local manufacturers. Though, there are sufficient automatic and semi-automatic bread as well as biscuit manufacturing units in India but there are still number of people prefer fresh bread and other products from the local bakery. After entry of Pizza and Burgers’ MNCs in the country, people are changing their tastes also. Today, they are not restricted to bread, cake and biscuits but to other bakery products also. The consumers are increasingly going for newer options with respect to bakery products. With the ventures of few Companies like Britannia, Biskfarm, and Morish etc. competition has increased. Also, the Indian market is witnessing the proliferation of bakery cafe chains in the form of Baristacafe, coffee day, Café Coffee & Monginis etc.

Armed with better technology, know-how and novel ideas, these foreign companies have made rapid inroads into the lucrative market within a very short span of time. Though the demand for bakery products in India has always been on the rise, there is clearly a lack of awareness and the will to break new ground, which has helped global players to gain brownie points while exploring the market in India. The unorganized sector accounts for about half of the total biscuit production estimated at 1.5 million tonnes. It also accounts for 85 per cent of the total bread production and around 90 per cent of the other bakery products estimated at 0.6 million tonnes. The last includes pastries, cakes, buns, rusks and others.

History

Pineapple was discovered a little later in time than expected. It had been a staple of the American diet for years before Christopher Columbus, an Italian explorer, discovered it on November 4, 1493. (www.library.ucf.edu; www. levins.com). That’s when the Guadeloupe Island natives served him and his colleagues this delectable fruit, pineapple. The varieties cultivated at the time were all seedless, and many typical wild cultivars were missing (Collins, 1948), demonstrating the area’s early vegetation. He brought the fruit to Europe. The European travellers were so fascinated by this fruit that they frequently mentioned it in their accounts (Morrison, 1963; Collins, 1960).

It was known as ‘nanas’ or ‘ananas’ by the people of South America (‘ananas’ meant ‘excellent fruit’ in Guarani). People in the area literally cultivated it according to a strict protocol, and they were especially keen to select superior varieties in order to increase fruit yield and quality. They gained a thorough understanding of crop agronomy and production. They also put into practise some of the processing standards that are still in use today around the world (holidayandtraveleurope.blogspot.in). Pineapple wine was made, fibre was extracted, and pharmacological needs such as emmenagogue, abortifacient, antiamoebic, vermifuge, stomach disorders, and poisoning arrow heads were met (Leal and Coppens d’Eeckenbrugge, 1996). In 1980, Antoni and Leal proposed that the pineapple originated in an area further north, between 10° N and S latitudes and 55–75° W longitude, which included parts of north western and eastern Brazil, Columbia, Guyana, and Venezuela. During colonisation, Spanish and Portuguese navigators were instrumental in the distribution and spread of pineapple to all corners of the globe (www.daf.qld.gov.au 2015).

1. Introduction

Raw milk is an emulsion. It is a mixture of milkfat globules, Solid Not Fat (SNF) and water. Over time, milkfat globule separate out from milk serum and comes to the surface of milk as a layer of cream due to the low density of milkfat or due to heating of milk. When milk is heated rapidly and continuously, some of the water in it evaporates from the surface. This exposes proteins and fat molecules, which bind and dry out and forms a skin like film on the surface. 

The number of hormones secreted by the body exhibits control over the physiological regulation of glucose sugar level (homeostasis) in the manner needed by the body. Depending upon the situation, hormones may increase or decrease the level of glucose sugar present in the blood or tissues. The glucose is oxidized to yield energy, carbon dioxide, and water.
Glucose, more than the body’s needs, is stored or converted mainly to glycogen and, to some extent, protein and fat. If glucose is less than the need of the body, its denovo synthesis takes place from amino acids or fatty acids, or is formed from the breakdown of stored glycogen. Various hormones are secreted by multiple endocrine glands to control the blood glucose level. If it fails, it leads to hypoglycemia or hyperglycemia conditions. Gluconeogenesis is not developed at birth in the case of a baby pig. Therefore, hypoglycemia in baby pigs is observed within 2 days of age if starved, leading to hypoglycemia, weakness, confusion, and death.
15.1 The Hormones Involved in Homeostatic Regulation of Blood
Glucose Level
The hormones influencing carbohydrate metabolism are explained below:

Introduction

Hormones may be defined as specific chemical molecules produced in certain specific organs called specialized cells or endocrine glands. They are delivered into the blood stream or some other body fluid in minute amounts by the circulatory system of the body and their they exerts a physiological effect at a site of action remote from its origin, regulating numerous biological activities including growth, development, reproduction, water & electrolyte balance, storage & usage of energy etc.

13.1 Introduction

Hospitality industry is the second largest industry in the world. It is well diversified and can be chosen as per the interest. Hospitality management involves planning, organizing, directing and controlling human and other resources within the different segments of hospitality industry i.e. lodging, restaurant, travel and tourism, institutional management, recreational management, meeting and convention planning industries. Although, these all are separate but related segments of the hospitality industry and are interrelated to provide good and efficient services to the guests and users. Hospitality industry provides services which are need oriented and differ in various parts of the world as per regions and the traditional styles.

The first building created specifically for hotel was ‘City Hotel’ with 73 rooms at 115 Broadway, New York in 1794. Pallonjee Pestonjee established the very first western-style hotel in India, “The Bristol Hotel” in Mumbai in 1840. According to the report of the department of Tourism, Government of India, at the end of the year 2004, there were 167 Five star hotels with approx. 28,900 rooms, whereas 126 Four star hotels, with 8,831 rooms [2]. To expedite the ongoing process of classification/re-classification of functioning hotels in one to three star categories, five Regional Committees have also been set up in Delhi, Mumbai, Kolkata, Guwahati and Chennai to conduct inspection [3].

An efficient management of animals will be incomplete without a well planned and adequate housing of animals. Improper planning of animal housing leads to additional labor charges. The housing should have proper sanitation, durability, arrangements for the production of clean milk under convenient and economic conditions.

a) General Housing Requirements

Dairy animals will be more efficient in the production of milk and in reproduction if they are protected from extreme heat, and particularly from direct sunshine. This can be achieved through provision of shade in tropical and subtropical climates. If dairy animals are confined, the area should be free of mud and manure in order to reduce hoof infection to a minimum. Concrete floors or pavements are ideal where the area per animal is limited. However, where ample space is available, an earth yard, properly sloped for good drainage is adequate.

According to Futter (2001) it is very important the way we cook our food. If the cooking is inadequate it causes food poisoning. While cooking there can be cross contamination starting from raw foods. It includes hands or utensils which can cause food poisoning. Most foods, especially meat, poultry, fish and eggs should be cooked thoroughly to kill most types of food poisoning bacteria. Generally the food should be cooked to a temperature of 75 °C or hotter. When food is cooked, it should be eaten promptly, kept hotter than 60 °C or cooled, covered and stored in the fridge or freezer. Some people are more at risk from food poisoning than others. In order to buy safe food in the market like buying pre-cut produce as a half a watermelon or cut veggies from a salad bar, it is important to choose items that are refrigerated or surrounded by ice. They must be kept in separate bags. FDA (2019) has studied the contamination in lettuce. Shopping at a farmer’s market is a great way to get locally-grown, fresh fruit, vegetables, and other foods. However, safety of these produce needs to be checked. Many markets have their own food safety rules and vendors must comply with them along with the government regulations. Fruits and vegetables must be washed thoroughly under running water just before eating, cutting or cooking. Fruits and vegetables must never be washed with soap or detergent or using commercial produce washes. Even if it has to be peeled before eating, it is still important to wash it first. Any bacteria present on the outside of items like melons can be transferred to the inside when it is cut or peeled. They should be refrigerated within two hours after preparation. The juice or cider must be treated (pasteurized) to kill harmful bacteria. Pregnant women, children, older adults and people with weak immune systems should drink only pasteurized or treated juice. Raw milk can harbor dangerous microorganisms like Salmonella, E. coli, and Listeria. World India (2017) has looked into the food regulations. These can pose serious health risks. Pregnant women, older adults and people with weakened immune systems are at higher risk for illness caused by Listeria. One source for these bacteria is soft cheese made from unpasteurized milk. It is vital to check the label to make sure that it is made from pasteurized or treated milk. Make sure that eggs are properly chilled at the market. FDA requires that untreated shell eggs must be stored and displayed at 45°F. While buying eggs it needs to be ensured that the eggs are clean and the shells are not cracked. Meat should be properly chilled even in the market and kept in closed coolers with adequate amounts of ice to maintain cool temperatures. If it is brought in an insulated bag or cooler during transit it is very beneficial to keep the quality. It should be always kept separately from your other purchases, so that the juices from raw meat (which may contain harmful bacteria) do not come in contact with produce and other foods. Essays (2018) have written a very comprehensive overview of food safety.

Today, organic and local foods are preferred as they use less pesticides or fertilizers. However, these foods, like others, can be exposed to harmful bacteria during the growing and harvesting process. The farmers and distributors must use good sanitary practices to minimize food contamination. Consumers should cook food properly. The street food vendors are a traditional and indigenous fast food approaching in most countries of the South-East Asia Region. As these are economical they cater to millions of consumers. Among safe street foods there are many contributing factors that are associated with the safety of street food. WHO had conducted a survey in 1993 covering 100 street foods in 100 countries around the world. It revealed that the major health threat comes from raw and undercooked food, infected food handlers and inadequate hygiene practices in processing and storing such food. If the street food is cooked well and is served hot, then the chances of food poisoning is less. The water quality, hygienic conditions and the level of cleanliness especially in the summer season are the major factors for food poisoning. However improvements in physical infrastructure and hygienic conditions are growing as consumers are also demanding quality food. Michael et al., (2017) have looked into organic versus conventional foods.

Introduction

Nutrition, a basic human need, is a critical part of health and development. Nutrition can be defined as the intake of food, deliberated in relation to the body’s dietary needs. On one hand, good nutrition – an adequate, well balanced diet combined with regular physical activity – is a foundation of good health, whereas,poor nutritionleads toreducedproductivity,impairedmental andphysical development, increased susceptibility to disease, and reducedimmunity. According to WHO, under-nutrition, together with vitamin and mineral deficiencies accounts for one-third of all child deaths and impairs healthy development and lifelong productivity. At the same time, sedentary lifestyles, demographic shifts, urbanization and the liberalization of markets have steered the world population to being overweight along with risk of chronic diseases like hypertension, dyslipidemia, type 2 diabetes, coronaryheart disease, stroke, etc.; thus, resulting in a double burden of malnutrition.

To address this dual burden of malnutrition, individuals needaccess to sufficient and good quality food; but focussing solely on food security is unlikely to solve the problem of global malnutrition. The challenges of malnutrition cannot be solvedjustbyincreasingfoodproductioninordertoimprove healthand nutritional status of the population. To resolve such challenges, awareness about food choices for optimal health plays a pivotal role among population.

Human nutrition is the science of understanding food; its component; intake; and how it is related to health, growth, development and diseases. Human nutrition involves the study of ingestion, digestion, absorption and assimilation of the nutrients; their metabolic functions, deficiency or excess disease as well as their regulation through several factors such as choosing particular food components/nutraceuticals or physical activity.

Human wellness is the psychological well-being of human beings. The behavioral skills of human beings are concerned with human wellness. The main purpose is to make life more comfortable and to help people be happier, healthier, and effective. So, the concept of human wellness has acquired significance in the field of positive psychology in this current era when people are suffering from strains and stress.

Ever since more attention has been paid to the quality of life, the concept of human wellness has become more popular. However, less importance has been given to the conceptual development of the theory behind it, thus creating confusion between terms like psychological well-being, subjective wellness, quality of life, satisfaction, happiness, and mental health.

Quality of life and life satisfaction are measures of an individual’s perceived level of human wellness and happiness. It is sometimes used as a synonym for subjective or general well-being. Human wellness is related to the psychological well-being of an individual. The latter is concerned with the mental and emotional health of a man. Psychological well-being may be stated as the general feelings of enjoyment, happiness, contentment, job satisfaction, and one’s role in the workplace, a sense of achievement, belongingness, as well as the is no distress, dissatisfaction, or worry, etc.

INTRODUCTION

The concept of hurdle technology has been developed as a new way to realize safe, stable, nutritious and economical foods. It employs combination of different preservation techniques to achieve a multi-target, mild but reliable preservation of foods. The application of hurdle technology in food preservation is increasing rapidly worldwide. Over the years, insight into the hurdle effect has been broadened and the application of hurdle technology has been extended. A better understanding of the occurrence and interaction of food preservative factors (hurdles) in foods is the basis for improvements in food preservation. If the hurdles for the microbes are known, the microbiological stability and safety of this food might be optimized by changing the intensity or quality of these hurdles. Using the proper combination of hurdles, it is possible to improve not only the microbial stability and safety but also the sensory and nutritive quality as well as the economical aspects of food. The hurdle concept is also referred to as food preservation by combined methods, combined process, combination preservation or combination processing techniques. The hurdle effect is of fundamental importance for the preservation of foods. The illustration of hurdle effect was first introduced by Leistner in 1978. Based on the understanding of hurdle effects, the concept of hurdle technology was derived (Leistner 1985).

Safe, wholesome and nutritious food is vital for sustenance, good health, food and nutritional security and augmentation of sustainable development of an individual. Also, safe food helps in the growth of the national economy and enhances the trade and tourism sector. Foods that are unsafe containing various kinds of microorganisms can cause chronic diseases or illnesses varying from diarrhea to cancer.

Dairy equipment and utensils with which milk and milk products come into contact are the main sources of contamination in the products. By the use of effective equipment cleaning and sterilization methods on routine basis, milk of high bacteriological quality can be consistently produced. In composite milk plant, a variety of equipment and utensils are used. The use of stainless steel for the fabrication of dairy utensils and equipment provide highly polished and hard smooth surface that can be cleaned readily, apart from showing resistance to corrosive action of detergents and bactericidal solutions. Utmost care is taken to avoid dents and scratches, which could be the possible focal points of subsequent contamination. To overcome all these problems aluminium and stainless steel vessels and equipment present an ideal situation.

Abstracts

To ensure safe food and adequate sanitation programs, the equipment used for processing of food products must be designed, fabricated, constructed, and installed according to sound hygienic design principles. This ensures the equipment can be adequately cleaned and sanitized, and that surfaces are resistant to daily exposure to corrosive food products and cleaning/sanitizing chemicals. This chapter focuses primarily on fundamental principles of hygienic design, which protect the product from microbial, chemical, and foreign-body contamination. This is followed by a discussion of general aspects of hygienic construction and design of food equipments, the selection of materials of construction and specification of surface finishes, fabrication, installation and cleaning and sanitization. Quality of raw materials or foods ingredients, proper processing, packaging and storage of finished products decides the quality of the food products. Planning for plant and equipment layout, its design, services (water, air, refrigeration, steam), waste disposal etc. are some of the critical factors, which contributes to quality. In addition, the food processing equipment must comply with strict standards and regulations, which are necessary for securing the quality and safety of the food products to the consumers.

The Concept of ‘Clean Milk’ Production

Although milk is nature’s most ideal and perfect single food both for the newborn and the mature human beings, the possibility of it being a source of biological and chemical hazards cannot be excluded. In view of the immense dietary importance of milk, the need for production of safe, clean and wholesome milk is emphasized. The term ‘clean milk’ does not mean milk in which all visible dirt is absent or milk from which it has been removed; rather it does denote raw milk from healthy animals, that has been produced and handled under hygienic conditions; that contains only small number of harmless bacteria and that possesses a good keeping quality without being treated by heat. In other words, the unhygienic production of milk may lead to inferior keeping quality as a result of rapid microbial multiplication under favourable storage conditions apart from serving as a potential health hazard. These microorganisms cause the milk to sour quickly, putrefy and develop undesirable flavours, colour defects, ropiness and bitterness. On the other hand, the pathogenic microorganisms, which may gain entry through various sources, may cause many diseases to the consumers.

Ice bank cooling: Storing of fruit and vegetable in storage chamber with positive ventilation and system countries where ice formation is allowed during night time (as electricity cost of night is less as compared to the day time). Melting of ice occurs during day time and with proper air circulation by means of ventilation process, approximately 0.5 10C temperature with 90% RH in the chamber is maintained. Ice Bank Cooler / Air forced cooler leads to desiccation of the produce (Plate 359). So use forced air high humidity cooler and these are known as Ice Bank Cooler. Ice bank coolers are useful for strawberry.

Ice cream: Ice cream may be define as frozen dairy product made by suitable blending and processing of cream and other milk products together with sugar and flavour.

Ice cream cone: A thin crisp edible cone for holding ice cream and filled with ice cream.

Ice point: It is the temperature of equilibrium between ice and water under normal atmospheric pressure (Plate 360).

Ichthylogy: It is the branch of the zoology that deals with the study of fishes (Pisces).

Icicle: It is small tapering piece of the ice formed by freezing of dropping water (Plate 361).

I. Dairy Farm Equipments

Introduction

Seasonal or annual fluctuation in weather patterns is termed as climate variability. However, climate change is a change in the mean state of weather statistic over three decades of time period. Climate change is exacerbating the challenges faced by the agriculture as well as horticulture sector. For last 10 years, Asia is facing the serious threats from climate change and variability such as tsunami, f loods and droughts. Extreme events are expected to have large negative impacts on crop productivity. The rise in temperature and reduction in rainfall under semi-arid environments are likely to reduce production of fruits, vegetables and flowers in the coming 20 years. The production and quality of fresh fruit and vegetable crops can be directly and indirectly affected by exposure to high temperatures and elevated levels of carbon dioxide and ozone. The rise in atmospheric CO2 levels due to global climate change and horticultural practices has both direct and indirect effects on secondary metabolite synthesis in plants.

Livestock is considered one of the essential variables in the revenue of a farmer. The sector (excluding fisheries) contributes 30 per cent to India’s agriculture gross domestic product, and it is valued at more than Rs. 9 lakh crores. India is also one of the largest producers of milk in the world; around 70 million rural households are engaged in professions linked to dairy. India is also the second largest exporter of bovine meat after Brazil. This sector provides a substantial income to farmers and supports the economy by generating enough demand in the rural and semi-urban regions. This animal husbandry sector comprising dairy and poultry is extremely valuable for farmer’s income security, and Covid-19 has the potential to disrupt this sector.

In developing countries such as India, where dairy farming is one of the most important sources of livelihood for 60 million rural households, 80 per cent of whom are landless, small and marginal farmers who depend on dairy for daily income, the crisis is extreme. Thus, even a small decline in the growth of the dairy sector significantly affects a large chunk of our population which are already vulnerable due to low income, poor savings, and lack of livelihood alternatives. Small production in multiple households leads to more reliance on efficient transportation for procurement. In addition to this, the Indian dairy sector is still dominated by the unorganized sector which handles more than 50 per cent of the marketable surplus. Milkman and vendors collect a small quantity of loose milk from different households and then supply it to urban consumers, roadside eateries, hotels, and sweetshops. Closure of shops and restrictions on transportation has ruthlessly disturbed this arrangement. Even in the formal sector out of the total milk processed 65 to 70 per cent is sold as liquid milk which is immediately vended after packing and only 30 per cent is processed into other dairy products like ghee, butter, cheese, curd, ice-cream, milk powder, etc. Thus, the formal sector also lacks sufficient infrastructure and storage facilities for processing and storing surplus milk after value addition.

2.1 Introduction

Each step in the food industry system e.g. food production, processing, transportation, storage, distribution and marketing, has some impact on the environment and there is much concern about environmental pollution. Due to the highly diversified nature of the food industry, various food processing, handling and packaging operations create wastes of different quality and quantity, which, if not treated, could lead to increasing disposal problems and severe pollution problems [24]. The preservation of the natural environment from industrial pollution is currently receiving much attention. In food industry, the most important problem is treatment and disposal of large quantities of waste water, a by-product of various processing operations. It is one of the largest industry groups comprising the manufacturing sector of the U.S. economy [47]. Likewise, India is the world’s second largest producer of food next to China, and has the potential of being the largest food processor. The total food production in India is likely to double in the next ten years [22]. Flour and grain; soft drinks and carbonated water; breweries; starch and miscellaneous food products; meat, poultry and fish; tea, coffee and other beverages; fruit juices; animal feed; sugar; distilleries and blending of spirits; cocoa, chocolates and sugar confectioneries; agricultural and food chemicals and industrial packaging are important sub-sectors of the food processing industry. Food processing projects involve the processing and packaging of meat products, fish and shell fish, dairy products, fruit and vegetables, grains and beverages production. It includes refinement, preservation, improvement of product, storage, handling, packaging and canning (Fig. 1). The processing may involve receiving and storing raw or partially processed plant, animal or other food materials, processing the raw materials into finished products, packaging and storing the finished products.

Food provides a sense of wellbeing and comfort and makes people feel good. In this world of a growing population, the need for affordable, safe and good quality food is rising constantly. On the other hand, there is growing awareness of customers who demand that food be produced and supplied hygienically in socially responsible and eco-friendly ways.