eChapters

A vitamin is an organic compound required by an organism as a vital nutrient in limited amounts. An organic chemical compound (or related set of compounds) is called a vitamin when it cannot be synthesised in sufficient quantities by an organism, and must be obtained from the diet. Thus, the term is conditional both on the circumstances and on the particular organism. For example, ascorbic acid (vitamin C) is a vitamin for humans, but not for most other animals. Supplementation is important for the treatment of certain health problems but there is little evidence of benefit when used by those who are otherwise healthy.

By convention, the term vitamin includes neither other essential nutrients, such as dietary minerals, essential fatty acids, or essential amino acids (which are needed in larger amounts than vitamins) nor the large number of other nutrients that promote health but are otherwise required less often. Thirteen vitamins are universally recognized at present. Vitamins are classified by their biological and chemical activity, not their structure. Thus, each “vitamin” refers to a number of vitamer compounds that all show the biological activity associated with a particular vitamin. Such a set of chemicals is grouped under an alphabetized vitamin “generic descriptor” title, such as “vitamin A”, which includes the compounds retinal, retinol, and four known carotenoids. Vitamers by definition are convertible to the active form of the vitamin in the body, and are sometimes inter-convertible to one another, as well.

Vitamins have diverse biochemical functions. Some, such as vitamin D, have hormone-like functions as regulators of mineral metabolism, or regulators of cell and tissue growth and differentiation (such as some forms of vitamin A). Others function as antioxidants (e.g., vitamin E and sometimes vitamin C).

Table 6.1: Descriptive Statistics of Variable with respect to Minimum, Maximum, Range, Mean, Standard Deviation of Values, Variance, and Coefficient of Variance

Result: Table 6.1 presents the distribution of 24 independent variables (x₁-x₂₄) and 8 independent variables (y₁-y₈) in terms of their range, mean, standard deviation and co-efficient of variance.

Revelation: The distribution pattern of variable, age, depicts that the minimum age of the respondents is 25 and maximum is 80. The mean age is 49.830 with S.D 13.954. The Coefficient of variance (CV) is 28.003 per cent which indicates that the distribution pattern of the variable is highly consistent.

The distribution pattern of variable, education, depicts that the minimum education of the respondents is 0(illiterate) and maximum is 12 (12th standard). The mean education is 7.650 with S.D 3.043. The Coefficient of variance (CV) is 39.778 per cent which indicates that the distribution pattern of the variable is fairly consistent.

The distribution pattern of variable, no. of enterprise, depicts that the minimum number of respondents is 2 and maximum is 9. The mean no. of enterprise is 3.820 with S.D 1.388. The Coefficient of variance (CV) is 36.338 per cent which indicates that the distribution pattern of the variable is fairly consistent.

7.1. INTRODUCTION

Abiotic stress is a major limiting factor in crop productivity. Several stresses, such as high temperature, high light intensity, osmotic stress, heavy metals, and several herbicides and toxin lead to over production of reactive oxygen species (ROS), causing extensive cellular damage and inhibition of photosynthesis (Allen, 1997). ROS is produced in both unstressed and stressed cells. Plants have well developed mechanisms against ROS, involving both limiting the formation of ROS as well as instituting its removal. Under unstressed conditions, the formation and removal of O₂ are balance. Introduction of molecular oxygen (O₂) into atmosphere by O₂- evolving photosynthetic organisms, ROS has been the unwelcome companion of anaerobic metabolism. In contrast to O₂, these partially reduced or activated derivatives of oxygen (O₂¹, O2-, H₂O₂, and HO) are highly reactive and toxic and can lead to the oxidative destruction in tissues during stress.

Bitter Gourd

Genetic Resources

Bitter gourd or balsam pear (Momordica charantia L.) is one of the most popular cucurbitaceous vegetable, commonly cultivated in many countries. Probably, India is the centre of origin and secondary centre of diversity of this crop. Bitter gourd is an annual monoecious herb, belongs to the genus Momordica that comprises 60 species. Out of these, only M. charantia, M. cochinchinensis, M. dioica, M. balsamina (balsam apple), M. cymbalaria (syn. M. tuberosa) are under cultivation. Momordica charantia is grown all over the country in tropical and subtropical climates and rich genetic diversity occurs in northern plains including tarai region, the northern-western plains, the central region/plateau and the western and eastern peninsular regions. Kakrol (M. dioica) is cultivated in West Bengal, Assam, parts of Bihar, while sweet gourd (M. cochinchinensis) is popular particularly in Tripura, Assam, Andaman Nicobar, Tamil Nadu, Uttar Pradesh, Bihar and West Bengal. M. denundata (Thw) Clarke (syn. M. dioica var. denundatais) is found abundantly in Kerala, M. macrophylla in Assam and M. sabangulata Blume is commonly found in Karnataka, Maharashtra, Meghalaya and Sikkim. In India, NBPGR , New Delhi, and IIVR, Varanasi, are actively engaged in the collection of bitter gourd germplasms.The NBPGR, New Delhi, has evaluated 33 collections for 37 characteristics. Variability has been reported in vine length (105-335 cm), number of primary branches (3-7), number of fruits/plant (1-25), fruit girth (8-27 cm), fruit length (9.5-20 cm) and fruit yield/plant (0.5-2.8 kg). Accessions, UB-22, UB-66, IC-74158, C-1621 and K-3374, have been found better yielder. At IIVR, Varanasi, 121 genotypes have been evaluated for yield and yield-contributing traits. VRB-40 & IC-44415A have been identified as promising lines. Accessions showing better charecters for different traits are given below (Ghosh and Kalloo, 2000):

Buckwheat (Fagopyrum esculentum Möench) is an annual pseudocereal crop belonging to the genus Fagopyrum of the family Polygonaceae. Its grains belong to cereals because of their similar use and chemical composition (Campbell, 1997). Among a number of buckwheat species nine species possed agricultural and nutritional trials common buckwheat (F. esculentum) and tartary buckwheat (F. tartaricum) are frequently cultivated around the world (Krkošková and Mrázová, 2005).

6.1 Introduction

In general, the terms drying and dehydration are interpreted as the removal of moisture from a food product. Removal of moisture from a food product offers an excellent protection against most common causes of food spoilage. The drying or dehydration process achieves such protection by reducing the moisture content of the food product to levels which are adequate to limit microbial growth or other adverse chemical reactions. During drying, heat and mass transfer occur simultaneously (Figure 6.1). Heat is transferred from the bulk gas phase (i.e. hot air used for drying) to the solid phase (i.e. food product to be dried), where part of it is utilized for vaporization and the remainder is taken up by the solid phase as sensible heat. Mass (i.e. moisture of food product) is transferred in the form of vapour through various resistances, first from the interior of the solid to the surface, then through vaporization at or near the surface and finally in transport of the vapour into bulk gas phase. Dehydration is the removal of moisture close to bone dry condition.

food, known to have been cultivated before 6000 BC in whole Andean region, Columbia, Peru, Equador, Bolivia before the conquest of Spanish. Incas have called this crop as a mother grain and was considered sacred. But in course of time, Catholics have suppressed the cultivation of crop after discovering it as a sacred drink during various religious ceremonies and hence the crop remained in the places where European could not reach (Vega Galvez, 2010).

Textile and apparel defects are commonly classified according to their severity, effect on product performance and influence on visual appearance. Accurate classification supports inspection decisions, corrective action and cost management. Critical defects create safety hazards, breach legal or compliance requirements, or make a garment unusable; affected products must be rejected immediately. Major defects significantly reduce appearance, durability or functionality and ordinarily require correction before sale, although they may not endanger the wearer. Minor defects are small departures from specifications that do not substantially affect usability but may lower perceived quality. Consistent classification enables inspectors to apply AQL criteria objectively and communicate appropriate acceptance, rejection or rework decisions.

In addition to pathogenic diseases, numerous abiotic disorders may also arise during growth, development and post-harvest storage of solanaceous vegetables. The physiological disorders of vegetables that have been included in this chapter are directly or indirectly associated with genetic, cultural, nutritional, physiological and environmental factors, and in most of the cases, the definite cause of disorder is not well understood due to the association of numerous factors together. These disorders may be related to colour, shape and form/condition of the produce. The genesis of physiological maladies was earlier poorly understand due to complexity in their characteristic symptoms but at present is relatively more transparent. The characteristic symptoms of abiotic disorders discussed below have not been attributed solely to a single agent or to a single cultural or environmental factor. The environmental factors correlated with the incidence of these disorders include high light intensities and low or high temperature of that growing area. For many abiotic disorders, very limited research work has been done, and the causes are poorly understood both in terms of why cultivars differ in susceptibility and why certain environmental factors predispose the plants or parts of the plant to the disorder. The growers feel concerned with the incidence of abiotic disorders as these cause huge economic loss. Therefore, the control of these abiotic disorders is essential for profitable production of solanaceous vegetable crops. In this chapter, emphasis has been given on practical aspects of diagnosis and potential control measures.

The importance of fruits and vegetables in human nutrition is well known. Vegetables are a rich and comparatively cheaper source of minerals and vitamins. Besides, their consumption in sufficient quantities provides taste and palatability, increases appetite and provides a fair amount of fibers. These are currently reckoned as an important adjunct for the maintenance of good health and beneficial in protecting against some degenerative diseases, thus, they form a vital part of human diet. Besides, vegetables now a day are being considered as an asset for providing a good source of income to the growers.

Vegetables originated in different parts of the world, some came from tropical or subtropical countries and others from temperate zones, some from humid areas and others from climates that are more arid. Most of the countries in the world are gifted with varied agro-climatic environments for growing an array of vegetable crops to combat the present imbalanced diet of a vast population of the world, particularly in the developing countries. Production of vegetables in developed countries is much higher, for instance in Japan, nearly 40% of the diet of the people is vegetables. To meet out the full dietary needs of the common man, to eliminate malnutrition, deficiency of minerals and vitamins and also to relieve the stress for increased production of cereals, there is a greater need for growing vegetables on larger scale. As such, for increased production of nearly 247 known vegetable crops, a sound knowledge of the various aspects of vegetable production technology, environmental stresses and constraints, techniques of raising, pre- and post-harvest technology, marketing and seed production techniques is of utmost importance. Breeding and selection of new cultivars have allowed for a greater adaptability to less favourable growing conditions than was possible in the past but the inherent agroclimatic requirements of a specific kind of vegetable have not changed materially. Time or season of planting of a particular vegetable crop is determined by its environmental requirement. Knowledge of specific agroclimatic conditions required for a particular crop could enable the grower to select the best season of planting in any particular area (Singh et al., 1991).

India is contributing about 10% of the world’s vegetables, and in terms of production, the country stands second after China. The existing area under vegetable cultivation in India is around 6.89 million hectare with a production of about 96.54 million tonnes. There will be a demand of 151-193 million tonnes of vegetables in India by 2030 (Dhaliwal et al., 2006). There are extensive crop losses in vegetable crops due to increased insect infestations. Since vegetables are grown round the year, there is carry over of insect-pests across the seasons and also from sowing until harvesting. Vegetables also invite more pest problems because of their cultivation under high fertility conditions leading to high plant succulence. High yielding varieties and hybrids are further more prone to the attack of insect-pests. Insect infestation affects the quality and market value of vegetables adversely and it is estimated that 30-40% of the total production is lost due to the attack of pests (Lal et al., 2004). A large number of pesticides are being used repeatedly to manage the insect-pests in India. Indiscriminate use of pesticides has led to many problems like toxic residues in edible parts of the vegetables, adverse effects on non-target organisms and beneficial insects, resurgence of secondary pests and development of resistance in major pests to pesticides and also environmental pollution. Therefore, latest approach has been to minimize the use of highly toxic insecticides by integrating different strategies of pest control like use of biological control agents, pesticides of plant origin, insect resistant varieties and other cultural practices. In this chapter, efforts have been made to highlight the distribution, host range, identifying characters, biology and nature of damage of important insect-pests of vegetables and also the methods of their management crop or pest wise.

Summary

Climate change (floods, droughts, rise of temperature and sea level) can directly impact the incidence of water related diseases through effects on water temperature and precipitation frequency and intensity. This chapter focuses on some common water quality related diseases that may enhance due to climate change such as arsenicosis, cholera, cyanobacterial toxins, dengue, diarrhoea and malaria. Arsenicosis is the disease caused by arsenic (As) contamination. As poisoning via groundwater has become a worldwide problem with 21 countries experiencing As groundwater contamination including Bangladesh, India, and China. In Bangladesh, out of 64 districts, As levels in 60 districts have exceeded WHO recommended guidelines of 10 µg/L and in 51 districts it exceeded Bangladesh recommended guidelines of above 50 µg/L. Chronic exposure to As has been linked to carcinogenic effects in both humans and animals. These include cancer of the various skins and internal organs (lung, bladder, liver and kidney) and reproductive and developmental effects; cardiovascular disease; reduced intellectual function in children and mortality. Alternate floods and droughts (due to climate change) have been found associated with the release of As and contamination of groundwater in Bangladesh, therefore may increase the risks of the disease due to rise of extreme events such as floods and droughts. Cholera is a diarrhoeal disease caused by the bacterium Vibrio cholerae. In 2012, WHO reported 245, 3931 cases of cholera in 48 countries, with more than 3,034 deaths with a case-fatality rate (CFR) of 1.2%. The highest cases were from Africa, followed by Latin America and Asia. The epidemic of cholera is reported to be linked strongly with climate change. Changes in temperature, salinity, rainfall and abundance of phytoplankton have been shown to cause an impact on distribution and survival of V. cholerae. In Bangladesh, cholera (cholera-toxin producing strain of V. cholerae) outbreaks are related to plankton blooms and rise of sea temperature.

Climate change and resource scarcity require farming systems that anticipate risks and make proactive decisions. This chapter explains how predictive modelling, artificial intelligence and IoT technologies can strengthen climate-smart agriculture. Statistical techniques, Convolutional Neural Networks, Long Short-Term Memory networks and Transformer models are examined for forecasting weather, crop performance and resource requirements. These tools can improve irrigation and fertilizer management, raise productivity and reduce environmental impact. Adoption remains constrained by poor-quality data, infrastructure deficiencies, cost, limited interpretability and unequal access to digital technology. Farmer-centred design, federated learning, gradual deployment and scalable systems are recommended for developing fair, practical and climate-resilient agricultural solutions.

S₁, S₂, S₃ : The symbols used to designate the first, second/third generation of selfing. S1 is obtained by sowing seeds of so plants and so on.
Saccharometer: A type of hydrometer used for finding the concentration of sugar solutions by determining their density; usually graduated to read the percentage direct.
Safari Park: Safaris are specialized zoos where the captive animals are housed in any large naturalistic enclosures and the visitors are allowed to enter the enclosure to view the animals in a mechanized vehicle or a predetermined route from close quarters.

Bio Control Agents explains how natural enemies can suppress agricultural pests and diseases through predators, parasitoids, and pathogens. It traces the historical development of biological control from traditional practices to major scientific successes and institutional development in India. The chapter describes introduction, augmentation, and conservation strategies, followed by detailed accounts of predators, parasitoids, and pathogenic microorganisms. Important bioagents, their characteristics, mechanisms, field applications, and mass-production methods are discussed, including Trichogramma, Chrysoperla, Cryptolaemus, Beauveria, Metarhizium, Trichoderma, Bacillus, and viral agents. The chapter provides a practical foundation for integrating biological control into environmentally responsible crop protection programs. across diverse farming environments and practical field implementation practically.

1. INTRODUCTION

There are many countries surrounded by the waters of the Caribbean Sea. These countries vary widely in size, topography, ethnicity, language spoken, agricultural production systems, main sources of income, income levels and styles of governance, to name a few.

This analysis covers only the countries where English is spoken as the first language. These countries are linked through a grouping of Caribbean Communities, called CARICOM, an organization of 15 Caribbean nations and their dependencies. It starts with Jamaica in the North to Trinidad and Tobago in the South, but also includes Belize in Central America and Guyana and Suriname in South America. Although French speaking Haiti and Dutch speaking Suriname belong to CARICOM, they are not discussed because of the language barrier. The other French speaking islands (Guadeloupe and Martinique) and the Spanish speaking islands (mainly the Dominican Republic, Cuba and Puerto Rico) have different administrations for agricultural development. CARICOM countries stretching from the tip of Florida, USA, in the North to Venezuela in South America. CARICOM includes Belize in Central America and Guyana and Suriname in South America.

T    :    Thymine

T    :    TH1 cells are a subset of CD4 T cells that are characterized by the cytokines they produce. They are mainly involved in activating macrophages, and are sometimes called inflammatory CD4 T cells. OR TH2 cells are a subset of CD4 T cells that are characterized by the cytokines they produce. They are mainly involved in stimulating B cells to produce antibody, and are often called helper CD4 T cells. OR The term TH3 cell has been used to describe unique cells that produce mainly transforming growth factor-â in response to antigen; they develop predominantly in the mucosal immune response to antigens that are presented orally. OR See regulatory T cells.

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.

Introduction
India has a well-established fisheries and aquaculture industry that significantly impacts Gross Domestic Product (GDP), foreign exchange, and nutrition. The fisheries sector plays a crucial role in India’s economy, contributing approximately 1.07% to the national GDP and 6.72% to agricultural GDP in 2021-22 (Economic Survey, 2022). India is second-largest producer of fish in the world (after China), with an annual production of around 16.24 million metric tonnes (MMT) in 2022–23, comprising 12.2 MMT from Inland fisheries and 4.04 MMT from marine fisheries. The fisheries sector has experienced remarkable growth over the decades. Fish production surged from 0.75 MMT in 1950-51 to 12.59 MMT in 2018-19, marking a seventeen-fold increase. This growth has been accompanied by a rise in the sector’s contribution to agricultural GDP, which impressively increased from 0.84% in 1950 to 5.7% in 2017. India is one of the largest seafood exporters, with exports reaching INR 63,969 crores ($8.09 billion) in 2022-23 (Marine Products Export Development Authority - MPEDA). Frozen shrimp is the leading export commodity, followed by frozen fish and cephalopods. The USA, China, the EU, and Southeast Asian nations are key export markets. This robust performance underscores the sector’s role in bolstering India’s foreign exchange reserves. The sector supports direct employment to over 28 million people, mainly in coastal and rural communities (National Fisheries Development Board, 2023) and indirect employment, including processing, transportation, and allied workers.
Fish is an important source of protein, essential fatty acids, vitamins and minerals. The harvest, handling, processing and distribution of fish
provide livelihood for millions of people and also provide valuable foreign exchange earnings. In both the industrialized and developing countries, fish is an important and cheaper source of animal protein to local communities (Adewolu and Adeoti, 2010). Fish is also used as source of other nutrients such as micro nutrients, minerals, and essential fatty acids mainly in the Low Income Food Deficit Countries. However, the disadvantage with the fish is that it is highly perishable though it is an inexpensive protein source. Due to these characteristics, the fish suffers 50-60% higher post harvest losses compared to agricultural commodities.