eChapters

Biochemical tests are vital diagnostic tools in fish health laboratories across India, helping to accurately identify and differentiate bacterial pathogens responsible for aquatic diseases. These tests complement culture-based and morphological analyses by revealing the metabolic and enzymatic functions of bacterial isolates. Given India’s broad aquaculture landscape with varied species and environmental conditions, rapid biochemical diagnostics are crucial for effective disease control and reducing economic impact.
Indian labs, especially those near coastal regions, aquaculture ponds, and freshwater bodies, routinely use these tests to confirm bacterial species isolated from fish. After isolating colonies and performing Gram staining on samples from fish gills, fins, skin lesions, internal organs, or mucus, key colonies are subjected to standard biochemical assays. These assays examine traits like carbohydrate fermentation, enzyme production, and substrate utilization to pinpoint genus or species. Frequently encountered bacteria include Aeromonas, Vibrio, Edwardsiella, Streptococcus, Flavobacterium, and Pseudomonas.
The oxidase test detects cytochrome c oxidase; Aeromonas and Vibrio are oxidase-positive, while Edwardsiella is not. The catalase test identifies catalase enzyme production, distinguishing catalase-negative Streptococcus from other Gram-positive cocci.
The Triple Sugar Iron (TSI) agar test, widely used in Indian labs, checks glucose, lactose, and sucrose fermentation along with hydrogen sulfide (H?S) production. For example, Edwardsiella tarda from Tamil Nadu and Andhra Pradesh produces black precipitate and ferments glucose. The indole test identifies indole production from tryptophan—many Aeromonas isolates from West Bengal and Odisha are indole-positive.

ABSTRACT

Serious infections caused by bacteria that have become resistant to commonly used antibiotics have become a major global healthcare problem in the 21^st century. Antibiotic resistance, initially a problem of the hospital setting associated with an increased number of hospitals acquired infections usually in critically ill and immuno-suppressed patients, has now extended into the community causing severe infections difficult to diagnose and treat. In hospitals, most common resistant bacteria include methicillin-resistant Staphylococcus aureus, vancomycin-resistant enterococci and gram-negative rods including Enterobacteriaceae and Pseudomonas aeruginosa. Vancomycin intermediate and resistant S. aureus, represent a new treatment challenge. In the community, penicillin and macrolide-resistant pneumococci developed several decades ago and are now present all over the world. More recently, communityacquired methicillin-resistant S. aureus has become a problem in several countries causing skin infections but also severe diseases. The molecular mechanisms by which bacteria have become resistant to antibiotics are diverse and complex. Bacteria have developed resistance to all different classes of antibiotics discovered to date. The most frequent type of resistance is acquired and transmitted horizontally via the conjugation of a plasmid. In recent times new mechanisms of resistance have resulted in the simultaneous development of resistance to several antibiotic classes creating very dangerous multidrug-resistant (MDR) bacterial strains, some also known as ‘‘superbugs’’. In many cases the use of antibiotics is unnecessary or questionable. The indiscriminate and inappropriate use of antibiotics in outpatient clinics, hospitalized patients and in the food industry is the single largest factor leading to

8.1 Introduction

Contamination of drinking water supplies from industrial waste is a result of various types of industrial processes and disposal practices. Industries that use large amounts of fresh water for processing have the potential to pollute waterways through the discharge of their waste into streams and rivers, or by run-off and seepage of stored wastes into nearby water sources. Other disposal practices, which cause water contamination, include deep well injection and improper disposal of wastes in surface impoundments.

Industrial wastes consists of both organic and inorganic substances. Organic wastes include pesticide residues, solvents and cleaning fluids, dissolved residues from fruits and vegetables, and lignin from pulp and paper to name a few. Effluents can also contain inorganic wastes such as brine salts and metals. This is an incentive for industry to pre-treat their water by neutralizing the chemically active components, recycling, dilution or extraction and collection for proper disposal.

The waste disposal practices, which presently pose a threat to drinking water supplies, include deep well injection of wastes and wastes that are dumped and retained in surface impoundments or evaporation ponds. (Ministry of Industries, 1994).

In keeping with the functions delegated to the Central Pollution Control Board under the Water (Prevention & Control of Pollution) Act, 1974, they covered a number of industries, their production and location with details of receiving water besides details on the raw material they used, the process they adopted to process them, inplant control systems, pollution control system provided and the future requirement with cost implications, monitoring system etc.

These documents are also aimed at developing standards for effluents and emissions as Minimal National Standards that can be adopted uniformly throughout the country. The State Pollution Control Boards (SPCBs) can tighten the standards, wherever the local situation demands.

While implementing these standards, the status of technologies adopted by the industries and further requirements to meet the overall objective of pollution control have been assessed. The technology requirement for pollution control industry wise has been presented in the following groups of industry categories.

1.    Introduction
    
2.     Code of Conduct for Responsible Fisheries
    
3.     Technologies for Responsible Fishing
    3.1     Technology for bycatch reduction in trawl fisheries
    3.2     Technology for by catch reduction in purse seine fisheries
    3.3     Technology for by catch reduction in gillnet fisheries
    3.4     Technology for by catch reduction in hook and line fisheries
    3.5     Technology for by catch reduction in trap fisheries
    
4.     Environment-Friendly Fishing Gears
    4.1     Reducing bottom impact of towed gears
    4.2     Semi-pelagic trawl system
    4.3     Benthic release panels
    4.4     Remote controlled otter boards (smart trawling)
    4.5     Ground gear modifications
    4.6     Otter boards bridles and sweeps
    
5.     Energy Conservation in Fishing
    5.1     Fishing gear and methods
    5.2     Vessel technology
    5.3    Engines
    5.4    Reduction gear, propeller and nozzle
    5.5     Sail-assisted propulsion
    5.6     Adoption of advanced technology
    5.7    Conservation, management and enhancement of fishery resources
    
6.     Conclusion
    
References

The noun vegetable means an edible plant or part of a plant, but usually excludes seeds and most sweet fruits. This typically means the leaf, stem, or root of a plant. Vegetables are eaten in a variety of ways, as part of main meals and as snacks. The nutritional content of vegetables varies considerably, though generally they contain little protein or fat (Woodruff,1995 and Whitaker, 2001) and varying proportions of vitamins such as Vitamin A, Vitamin K and Vitamin B6, provitamins, dietary minerals and carbohydrates. They contain a great variety of other phytochemicals, some of which have been claimed to have antioxidant, antibacterial, antifungal, antiviral and anticarcinogenic properties (Gruda, 2005; Steinmetz and Potter,1996). Some vegetables also contain fiber, important for gastrointestinal function. Some contain important nutrients necessary for healthy hair and skin as well. However, vegetables often also contain toxins and antinutrients such as á-solanine, á-chaconine,(Science direct) enzyme inhibitors (of cholinesterase, protease, amylase, etc.), cyanide and cyanide precursors, oxalic acid, and more (Bad Bug Bock > BBB–Clostridium botulinum). Depending on the concentration, such compounds may reduce the edibility, nutritional value, and health benefits of dietary vegetables. Cooking and/or other processing may be necessary to eliminate or reduce them. Diets containing recommended amounts of fruits and vegetables may help to lower the risk of heart diseases and two type of diabetes. These diets may also protect against some cancers and decrease bone loss. The potassium provided by vegetables may help to prevent the formation of kidney stones.

1. Introduction

Jordan is an Arab country located in the heart of the Middle East. It is a highly centralized country in both political and economic terms, with a constitutional monarchy. The parliament consists of an upper-house appointed by the king and an elected lower-house. The king appoints the prime minister, who in turn, appoints a cabinet of ministers.

1.1. General Information

The country shares borders with Iraq to the east, Israel and the Palestinian Authority to the west, Syria to the north and Saudi Arabia to the south. In 2005, the population of Jordan was estimated at 5.5 million people with a population growth rate around 2.3 per cent, living in an area of about 89,300 sq. km. Most of the population is urbanized (82 per cent), with more than half living in the capital, Amman, and in the Zarqa governorate. About 60 per cent of the total population is under 25 and 38 per cent is under the age of 15 (United Nations, 2006). Jordan is classified as a lower-middle income country, with an economy that is severely affected by water scarcity and limited land resources. The capital Amman dominates over  80  per cent of the country’s economy.

1. Basic Information and Agrarian Status

Zimbabwe is a landlocked country located in Southern Africa covering 39,037,000 hectares. It is bordered by Zambia, Mozambique, South Africa, Botswana and Namibia. It is situated between 15 and 22° south latitude and 26 and 34° east longitude. Climatic conditions are largely sub-tropical with one rainy season between November and March. In 1981, the country had 5 hectares per capita whilst it is estimated that the current population to land ratio has declined to 3.25 hectares per person and this is largely attributed to population increases that have taken place over the years. The national census conducted by the Central Statistics Office in 2002 showed that the country has a population of 1,20,00,000 people. About 80 per cent of the population resides in the rural areas, where they sustain their livelihoods through agriculture. When discussing agricultural production activities in the country, it is important to note that nearly all the soils (80 per cent) in the country are sandy from granite rocks or from schists.

Escherichia coli is an important model organism for studying microbial metabolism, metabolic regulation, and metabolic engineering. This chapter introduces the use of metabolomics to investigate the metabolic architecture and physiological responses of E. coli. It examines metabolite profiling, central carbon metabolism, metabolic pathways, environmental responses, and metabolic flux analysis. The chapter explains how metabolomic data can reveal changes in cellular metabolism and support the identification of pathway bottlenecks and regulatory mechanisms. Applications in microbial biotechnology, recombinant production, metabolic engineering, and optimization of fermentation processes are considered. The chapter demonstrates how E. coli serves as a useful experimental system for connecting metabolite changes with cellular function.

In the present study, chicken (broiler) meat mince was used as protein sources. Incorporation of chicken meat minceat10, 20, 30, 40 and 50percent levelweretriedbesidesotheringredientswhichwereaddedincontrol.Chicken Biscuits incorporated with 20 per cent CMM were preferred the most on the basis of their sensory evaluation. Asthe chicken incorporated biscuits have not been reported in India and abroad. Majority of biscuits available in market are prepared from cereal (refined wheat flour), which has very low protein content & lack lysine, threonine & tryptophan essential amino acids. The biscuits thus developed can contribute good amount of nutrients especially protein if consumed in place of cereal (refined wheat flour) biscuits. The developed products can be used for feeding programme at institutes and school going children and elderly people, who are more prone to malnutrition particularly due to protein with essential amino acids deficiency. Chicken meat is also rich in threonine, tryptophan and lysine. Thus development of chicken incorporated biscuits using chicken meat and wheat flour would provide a nutritious, convenient and ready to eat food item. With an aim to develop biscuits by incorporating the chicken meat, the present study was planned. It was concluded that the biscuits with 20 per cent chicken meat mince and wheat flour would provide a nutritious with sufficient amount of essential amino acids (lysine, tryptophan and threonine), convenient and ready to eat food item. The cost of production of biscuits with 20 per cent CMM worked out to be Rs. 82.40 per kg.

1. _____________ is the main source of energy for the earth. (Sun)
2. The major cause of ‘Minamata’ disease in Japan was due to pollution by_____________. (Mercury)
3. _____________ method in water analysis is used for the quantitative estimation of dissolved oxygen. (Modified Winkler’s method)
4. Systematic scientific study of fresh water ecosystem is called as_____________. (Limnology)
5. The Earth Summit held in 1992, was organised at_____________. (Rio de Janeiro)
6. The altitude of troposphere in atmosphere is about_____________ kilometre. (Upto 11 km)
7. Bhopal gas tragedy took place in the year_____________. (1984)
8. The unit of noise pollution is measured in_____________. (Decibel)
9. Most important mitigation strategy for reducing global warming and climate change is _____________. (Carbon sequestration)

Abstract

Increases in atmospheric concentrations of CO₂ are likely to have major physiological consequences for plants, due to the major effects of atmospheric CO₂ on photosynthetic rates and the centrality of photosynthesis to plant metabolism. We review what is known about the effects of growth at elevated levels of CO₂ on the protein and N concentrations of plants in general, and food crops in particular. Growth at elevated CO₂ typically reduces plant tissue N concentrations by 10-15%. The physiological mechanisms behind this decrease in tissue protein and N are likely complex, and include both dilution from increased tissue concentrations of non-structural carbohydrates and decreased root uptake of N.

These are a broad group of plants that have evolved in situations characterized by very high day temperatures and low night temperatures with very low available moisture in the growing medium. Their plant body is modified to conserve moisture with physiological adaptations that help to reduce moisture loss considerably and to survive in hot desert situations or drought conditions. Stems, leaves and roots of these plants are fleshy and rich in watery mucus. The unusual morphological features that these plants have developed to enable them to survive in their harsh native habitats, set them apart from other plants and have given them rarity value when grown as ornamentals. They are hence displayed individually or grown in a rockery where a landscape of rocks and stones highlight their features and at the same time provide desirable contrast with other garden plants. Many members of Cactaceae, Crassulaceae, Aizoaceae, Euphorbiaceae, Asphodelaceae and Agavaceae belong to this group and are commonly referred to as rock garden plants.

For effective and economic control of pests, besides selection of appropriate plant protection chemicals, application of the chemicals at the most vulnerable growth stage of the pests and use of chemicals at the correct dosage, selection of proper plant protection appliances to carry out the operation is also of vital importance, so as to ensure uniform application of the chemicals.

Plant protection chemicals are mostly used as sprays and dusts using sprayers and dusters respectively. However, in most of the cases spraying is preferred to dusting. Different types of sprayers and dusters are being used for these operations and in both, there are manually operated as well as power operated equipments and in sprayers there are both hydraulic and pneumatic types of sprayers.

The nature of the pesticide formulations to be used and the purpose for which they are used also determine the type of equipment to be used. Dusters are used for dusting insecticidal dust formulations. Sprayers are used for spraying insecticidal liquid formulations. Granular applicators are used to apply granular formulations. Fumigators are used to apply fumigants to fumigate godowns, warehouses, rat holes etc. Soil injectors are used to inject pesticides at a particular depth of soil under pressure. Flame throwers are used to throw f lames at specified targets.

5.1 Introduction

Out of the many climatic events that influence the earth’s environmental fabric, drought is perhaps the one that is most linked with desertification. Drought is a natural hazard originating from a deficiency of precipitation that results in a water shortage for some activities or some groups and is often associated with other climatic factors (such as high temperatures, high winds and low relative humidity) that can aggravate the severity of the event. Drought differs from aridity in that the latter is restricted to low rainfall regions and is a permanent feature of the climate. Drought occurrences are common in virtually all climatic regimes.

Widespread and severe drought conditions in Asia, Latin America and the Caribbean in 2000 have raised serious concerns about the continuing vulnerability of the world community to extended periods of droughts and water shortages. In 2000, major droughts affected much of south-eastern Europe, the Middle East, and the area through central Asia to northern China. Especially hard hit was Afghanistan, Bulgaria, Iraq and the Islamic Republic of Iran and parts of China. In North America, months of above-average temperature coincided with below-normal precipitation through northern Mexico and much of the southern and western regions of the USA, leading to one of the worst wildfires in the past 50 years.

By August 2001, much of Western Asia, Central Asia, and the Middle East was suffering the third year of a continuing drought that severely reduced many countries’ crop yields. The countries most affected were Afghanistan, India, Islamic Republic of Iran, Pakistan, and Tajikistan.

Herbal Based Formulations presents plant-derived preparations used for pest, disease, viral-vector, growth, and development management. The chapter includes neem seed kernel extract, Vitex, onion, tobacco, chilli-garlic, ginger, custard apple, eucalyptus, lantana, mint, marigold, papaya, aloe, pomegranate waste, and other botanical preparations. It organizes formulations according to their intended agricultural function and provides examples of decoctions, extracts, sprays, and fermented products. The chapter demonstrates the diversity of locally available plant resources that can be incorporated into natural farming practices. It also highlights the practical importance of botanical inputs for reducing dependence on synthetic crop-protection products while supporting sustainable farm management. effectively.

Introduction

Fruits, oldest forms of food known to man, are not only good source of nutrition to the body but also have medicinal property and treat ailments. Fruits like apple, lemon, orange and pomegranate aid in proper functioning of the heart. Nutrients in apple, date and mangoes sharpens memory, prevents exhaustion, hysteria, insomnia and mental tension. All berries are rich in iron, phosphorus and sodium which are essential minerals for blood building and nervous system strengthening. Liver ailments, indigestion and rheumatism can be cured by the use of Lemons. Watermelons are good kidney cleansers. Pineapple, pomegranates help in soothing inflammation of nose, throat, fever and other chronic or bronchial ailments. Grapefruit juice is an effective aid for common cold. Fresh and ripe fruits like grapes, apples, bananas and figs are good for all brain deficiencies. Even the kernel of walnut is a helpful remedy for weakness of the brain.

2.1 Introduction

Perfumery, the art of making perfumes, began in ancient Egypt but was developed and further refined by the Romans and the Arabs. The history of perfume began in antiquity. The word perfume is used today to describe scented mixtures and is derived from the Latin word, “per fumum”, meaning through smoke. Although perfume and perfumery also existed in East Asia, much of its fragrances are incense based. The world’s first recorded perfume maker Tapputi was mentioned in a Cuneiform tablet from the 2nd millennium BC in Mesopotamia. Perfume and perfumery also existed in India. The earliest distillation of Attar was mentioned in the Hindu Ayurvedic Charaka Samhita. The Bible describes a sacred perfume, consisting of liquid myrrh, fragrant cinnamon and cassia. In Islamic culture, perfume usage has been documented as far back as the 6^th century and its usage is considered a religious duty. Al-Kindi in the 9^th century wrote a book on perfumes entitled ‘Book of the Chemistry of Perfume and Distillations’ that has more than hundred recipes for fragrant oils, salves, aromatic waters and substitutes or imitations of costly drugs.

ABSTRACT

The Plant Growth Promoting Rhizobacteria (PGPR) is a group of rhizosphere-colonizing bacteria producing substances which increase the growth of plants and/or protect plants against pathogens. The use of PGPR has become rather common practice and is on the rise in many regions of the world. Inoculation with PGPR also aims at reducing the application of potent ially pollut ing chemical fertilisers and pesticides. Biocont rol microorganisms have unquestionable potential for managing plant diseases, insect pests and nematodes besides increasing crop productivity. Interest in biological control has recently been intensified because of imminent bans on effective pesticides, widespread development of pesticide resistance in insect pests and plant pathogens and a general need for more sustainable pest control strategies. Active and long-term colonization of the root surface of the plant and effective expression of disease-suppressive traits are generally considered prerequisites for successful suppression of horticultural crop diseases by rhizobacteria. The important mechanism of biocontrol by PGPR involve competition and production of antibiotics such as 2,4-diacetylphloroglucinol (DAPG), pyoluteorin (PLT), pyrrolnitrin, phenazine-1-carboxylic acid (PCA), 2^-hydroxy phenazines and phenazine-1-carboxamide (PCN). Siderophores, including pyochelin and pyoverdine which chelate iron and other metals also contribute to disease suppression by conferring a competitive advantage to biocontrol agents for the limited supply of essential trace minerals in natural habitats. Induced systemic resistance (ISR) is a state of increased defensive capacity developed by the plant when appropriately stimulated, through activation of latent resistance mechanisms induced by diverse agents including rhizobacteria. Microplants are first grown in vitro under aseptic conditions devoid of microorganisms. They are then transferred to a post vitrum substrate for acclimatization. By creating a beneficial rhizosphere in microplants at an early stage, the plants could be better protected against biotic and abiotic stress that occurs in the greenhouse or in the field. The beneficial rhizosphere can be created by biotization of microplants with PGPR. The search for PGPR to control postharvest decay of fruit crops has been actively pursued and promising strategies have been practiced nowadays. Biological control of postharvest diseases of perishable horticultural crops with PGPR is complex and involves a number of mechanisms to suppress the development of the disease. PGPR, being a potential candidate in disease management through multiple mode of action, it becomes highly imperative to know its different role in the management of plant pathogens.

Dryland agriculture refers to cultivation of crops entirely under natural rainfall without irrigation. It is a form of subsistence farming in the regions where deficit of the soil moisture retards the growth of water consuming crops like rice (Oryza sativa), sugarcane etc. Dryland areas are characterized by low and erratic rainfall and no assured irrigation facilities. Dryland agriculture is important for the economy as most of the coarse grain crops, pulses, oilseeds, and raw cotton are grown on these lands. Dryland areas receive annual rainfall between 500 and 1200 mm.

Types of Dryland Agriculture

Depending on the amount of rainfall received, dryland agriculture has been grouped into three categories:

Dry farming: It is production of crops without irrigation in areas where annual rainfall is less than 750 mm. Crop failures are more frequent under dry farming condition owing to prolonged dry spells during crop period. The growing season is less than 200 days. It is generally practiced in arid regions of the country