eChapters

Emerging preservation technologies are being developed to meet increasing expectations for food safety, nutritional quality, sustainability and longer shelf life. Greater investigation remains necessary to understand their effects, limitations and suitability for large-scale industrial application. This chapter examines innovative physical, chemical and biological methods used at different stages of the food chain. Technologies include plasma-activated water, cold atmospheric plasma, advanced oxidation, electrolysed water, space-food preservation, hurdle systems and biopreservation. Their mechanisms involve reactive species, microbial membrane damage, oxidation, combined environmental stresses and beneficial biological agents. The chapter assesses their applications, advantages and disadvantages while highlighting research, regulation, process standardisation, equipment cost and commercial scalability.

Population growth and rising demand for processed food have increased pressure on food industries to improve safety while reducing energy, water, waste and environmental impacts. Green preservation technologies seek to deliver effective processing through cleaner operations, responsible resource use and reduced dependence on toxic substances. These approaches support sustainable industrial development by lowering processing time, conserving nutrients and improving the utilisation of raw materials. The chapter discusses energy-efficient preservation, water-saving techniques, waste valorisation and the conversion of by-products into useful materials. Life-cycle assessment is introduced as a method for evaluating environmental performance across the preservation system and identifying opportunities to reduce emissions, resource consumption and food-chain waste.

Food preservation is increasingly influenced by digital technologies associated with Industry 4.0. Ensuring food safety now requires not only microbial control but also authenticity, traceability, continuous quality monitoring and rapid decision-making. Artificial intelligence and machine learning can analyse complex datasets to predict shelf life, recognise spoilage patterns and assess risks arising during processing, storage and distribution. Internet of Things devices connect sensors across the cold chain, while blockchain supports transparent and secure traceability. Smart pH, temperature, humidity, optical and biosensors provide real-time information about product conditions. The chapter examines these technologies alongside automation while considering data quality, model validation, infrastructure, cost and industrial implementation challenges.

Food packaging protects products from physical, chemical, biological and environmental influences while helping to maintain safety, freshness and quality. Advanced packaging systems perform functions beyond simple containment by regulating gases, moisture, temperature and microbial activity. The chapter examines modified-atmosphere, controlled-atmosphere and vacuum packaging, together with active and intelligent systems. Time-temperature indicators, freshness indicators and biosensors enable real-time monitoring of product condition. Edible and biodegradable materials provide more sustainable alternatives to conventional packaging, while nanotechnology can improve mechanical, barrier and antimicrobial performance. Shelf-life modelling and hurdle technology are also considered as tools for designing integrated packaging systems suited to specific foods and storage conditions.

Nanotechnology-based preservation employs materials generally measuring between 1 and 100 nanometres. Their high surface-area-to-volume ratio, adjustable surface chemistry and responsiveness to external stimuli enable highly controlled interactions with foods and microorganisms. Nanomaterials may deliver antimicrobial compounds, antioxidants and other active substances in a controlled or targeted manner. Silver, zinc oxide and chitosan nanoparticles can be incorporated into coatings and films to reduce microbial contamination while maintaining sensory and nutritional quality. The chapter discusses nanoencapsulation, nanoemulsions, antimicrobial nanoparticles and nanosensors for detecting spoilage and monitoring shelf life. It also considers effectiveness, controlled release, food applications, safety assessment and potential regulatory concerns associated with nanotechnology.

Electromagnetic and advanced heating technologies offer rapid and energy-efficient alternatives to conventional food processing. These systems use microwaves, radio frequency, electrical resistance, infrared radiation, lasers, photonic energy and dielectric heating to generate heat within food or directly at its surface. Faster and more uniform energy transfer can improve microbial inactivation, shorten processing time and reduce damage to nutrients and sensory characteristics. The chapter explains the principles, mechanisms, applications and nutritional effects of microwave, radio-frequency, ohmic and infrared heating. It also considers laser-based and photonic techniques. Particular attention is given to heating uniformity, product properties, equipment control, energy efficiency and the prevention of underprocessed areas.

Non-thermal preservation technologies inhibit microorganisms and enzymes without relying primarily on high temperatures. They are designed to preserve freshness, colour, flavour, texture and heat-sensitive nutrients more effectively than conventional thermal treatments. These methods employ hydrostatic pressure, electrical energy, electromagnetic radiation, reactive species or mechanical forces to damage microbial cells and disrupt essential biological functions. The chapter examines high-pressure processing, pulsed electric fields, cold plasma, ultrasound, irradiation, pulsed light and edible coatings. It explains their operating principles, mechanisms, applications and nutritional implications. These technologies offer promising alternatives for producing safe, minimally processed foods, although equipment costs, process optimisation and industrial scalability remain important considerations.

Thermal preservation is among the most established methods for improving the safety and storage life of food. It uses controlled heating to destroy spoilage organisms and pathogens and to inactivate undesirable enzymes. Processing intensity varies according to the target microorganisms, food composition, packaging and required shelf life. Pasteurisation reduces pathogenic and spoilage microorganisms without achieving complete sterility, while sterilisation destroys more heat-resistant organisms and spores to produce commercially stable foods. Ultra-high-temperature processing combines very high temperatures with extremely short treatment periods. This chapter also discusses retort processing, thermal-death kinetics and microbial-inactivation models used to design safe processes while minimising nutritional and sensory damage.

Low-temperature preservation is one of the most widely used physical approaches for extending food shelf life without seriously affecting quality. Reducing storage temperature slows microbial multiplication, enzyme activity and chemical deterioration, with inhibition increasing as temperature declines. Refrigeration maintains food above its freezing point, while freezing reduces temperature below zero and converts available water into ice. The chapter examines conventional refrigeration, advanced chilling, freezing, cryopreservation, superchilling and the influence of ice crystallisation on food quality. It explains how temperature, cooling rate and crystal size affect texture, nutritional retention and storage stability, while also addressing the limitations and quality changes associated with prolonged low-temperature storage.

Traditional food-preservation methods reflect generations of practical knowledge concerning food safety, storage and seasonal availability. Although commonly performed at the household level, these methods are supported by scientific principles such as reducing water activity, lowering pH, inactivating enzymes and restricting microbial growth. Blanching, fermentation, sun drying, increasing solute concentration, pickling, smoking and curing preserve foods through different combinations of heat, dehydration, acidity, beneficial microorganisms and antimicrobial compounds. Their materials and equipment are generally accessible, making them suitable for home-scale application. The chapter explains the principle, mechanism, application and nutritional implications of each method while showing their continuing relevance in contemporary food systems.

Food preservation involves treating and safely handling food to prevent or delay spoilage while retaining colour, texture, flavour and nutritional value. Food deterioration may result from microbial growth, indigenous enzymes, oxidation, physical damage, insects, moisture, temperature and other environmental conditions. Bacteria, fungi and other microorganisms contaminate food through soil, water, air and biological sources. The effectiveness of preservation therefore depends on controlling intrinsic factors such as pH, water activity, nutrients and redox potential, together with extrinsic factors such as temperature, humidity and storage atmosphere. Understanding these mechanisms provides the scientific foundation for selecting safe and effective preservation methods.

The livestock sector, particularly the dairy sector, plays a vital role in India’s economy and contributes significantly to the country’s milk production. The continuous growth and development of this sector have led to India becoming the world’s largest milk producer. It has seen significant growth, with a Compound Annual Growth Rate (CAGR) of 13.36% from 2014-15 to 2021-22. This sector’s contribution to the total Gross Value Added GVa in agriculture and allied sectors has risen from 24.38% in 2014-15 to 30.19% in 2021-22, accounting for 5.73% of the total GVA in 2021-22. The country’s livestock population, as per the 20th Livestock Census, includes approximately 303.76 million bovines (cattle, buffalo, mithun, and yak), 74.26 million sheep, 148.88 million goats, 9.06 million pigs, and about 851.81 million poultry. The dairy sector stands as the single largest agricultural commodity, contributing 5% to the national economy and directly employing more than 8 crore farmers.

An animal, which has more or less of comparable (similar) physiology and body composition with various biological system as human beings, which are tiny, easy to handle, less expensive and co-operative are called as “Laboratory Animals”. Importance of Laboratory Animal in Bio-Medical Research Laboratory animals are used in basic biological research, disease diagnosis, immunology, virology, applied medicine and demonstration/teaching. Materials collected from diseased animals need confirmation through microbiological and pathological means of diagnosis. Rats, Beagle dogs and primates are engaged in toxicological research. These are used to study the functions of organs, response of a particular organ or the whole system to drug and the method of evolving surgical techniques and demonstration of experimental surgery need experiment animals. Hamster have cheek pouches which may extend to halfway down the length of the body, are used to temporarily store food and, when full, should not be mistaken for a tumor. An entire shelled peanut

The review provides an explanation of the Indian poultry market’s trend in management. Everything you need to know about diseases, their attacks, processing, production, feeding, and market trends is included in this review. For farmers, raising poultry is a vital source of revenue that allows them to meet their basic necessities. Because of the high consumption rate and current population growth, there is a sharp increase in demand for chicken meat. Meat consumption is required to provide additional nutritious intake. Generally speaking, the poultry sector plays a critical role in creating micro and macrobusiness opportunities and enhancing human nutrition. The Indian economy is dominated by small-scale commercial ventures for women and the delivery of manure for agricultural purposes. Animal health is ensured by the supply of high-quality feed, which maintains nutritional values. The weight and age of the chickens, their rate of development, the quantity of eggs they produce, the climate (cold or rainy weather increases energy consumption), and the amount of nutrition they acquire from foraging all affect how much feed and how much nutrition it contains. This review article includes general information about poultry

This chapters covers wide range of topics like taxonomy of wild animals, difference criteria among the species identification, feeding and nutritional requirements of wild and captive zoo animals, housing standards in zoo, habitats and behavioral changes and its management, environmental impact on captive animals, acts and zoo regulations governing wild and captive animals, handling and restraining of wild/captive animals, Purpose of restraining,  techniques of immobilization and complications associated with the immobilization. Various national and international organizations working

Camel Nomenclature Family: Camelidae Order: artiodactyla (even –toed ungulates) Suborder: Tylopoda (Pad on foot) The family Camelidae includes two genera: Camelus and Lama The genus Camelus consists of two species namely. Camelus dromedarius (unicorn or dromedary) with habitat in dry, hot, arid areas of Africa, Asia and Australia and Camelus bactrianus Double-humped or Bactrian) habitat in cold, dry areas of the central Palearctic Ecozone. These two species are commonly called Old World camels. The Species belonging to the genus Lama are Lama vicugna  Vicunaand Lama guanaco guanaco, Lama glama (llamaand Lama pacos alpaca . These four Species are called New World camels and have their habitat in South America Camels are considered a “ship of the desert” as a means of transport and Towing ability in the desert. The camel also played an important role in civil law and order, defense and battles from antiquity to the presen

Man have used different animals like cattle, buffaloes, horses, donkeys, mules, yak, camel and elephants for different kinds of work. Draft animals evolved during course of time have advantages of stability, sustainability and environmental friendliness. Different animals have different draught capacities for performing different types of work. The approximate power developed by various animals in terms of horse power are- Horse-1.0: Bullock-0.74: Buffalo-0.75: Cow-0.45: Maule-0.75: Donkey- 0.35. Draught developed by the animal is generally proportional to its body weight. Draught ability: Work is done when force is exerted to move an object over a distance. Work in the strict sense of “Force exerted x distance through which the force is moved”. Work performed by animals can be measured by quantifying their capacity to generate power. Draught Power (W) = Draught (N) x Speed (m/s) Management of different working animals 1. Cattle and Buffalo Bullocks: they are used for various operations like ploughing, harrowing, threshing, harvesting, for lifting water and for transporting people and agricultural produce.  The average speed of a pair of bullocks pulling a cart is around 4-5 km per hour. If not overdriven, they can travel 25-30 km or even 40 km in favorable condition. Atmospheric 

India enjoys one of the largest livestock wealth in the world India has continued to experience an increasing growth in its livestock sector. Between 2010-11 and 2019-20, gross valueadded (GVa) from livestock sector grew at an extraordinary rate of 7.6% annually. Among the livestock species, pig finds an important place as it being reared by socio-economically weaker sections of the rural India) Pig as compared to other livestock species has a great potential to contribute to faster economic return, because of certain important inherent traits like high fecundity, better-feed conversion efficiency, early maturity and short generation interval. Pig farming requires small investment on its housing and equipment. It has immense potential to ensure nutritional and economic security for the weaker sections of the society.The pig grows fast and is a prolific breeder, farrowing 10-12 piglets at a time. It is capable of producing two litters per year under good management conditions. The carcase yield is high (65 -80% of live weight). Pigs convert inedible feeds, forages, and certain grain by products into valuable nutrition’s mean. The faeces of pigs are useful in maintaining soil fertility. Pig population According to the 20 th Livestock census of India pigs comprises 1.7 % to the total livestock population (http://dahd.nic.in). The total Pigs in the country are 9.06 million in the current Census, declined by 12.03% over the previous Census. Out of the total pigs 20.98% are either exotic or crossbred