eChapters

1.    In milk and milk products, non bacterial ropiness or sliminess may be due to the stringiness/sliminess caused/resulted

(a) Due to thin film formation of proteins, when cooled

(b) From cream thickness

(c) By mastitis, fibrin and leucocytes from the milch animal’s blood

(d) All of the above

2.    In milk, bacterial ropiness is caused by slimy capsular material from the cells usually

(a) Lipids

(b) Proteins

(c) Gums or mucins

(d) Polysaccharides

1. Introduction

At present there is an increasing demand for colourants from natural sources. Since there is a possibility of banning of synthetic colours in view of their carcinogenic properties and already a reduction in number of permitted synthetic colours from 13 to 8 numbers in our legislation (PFA, 2005), the demand for natural colours is evident. In Japan and European countries because of the green movement, the demand for synthetic colours has been reduced. Synthetic colours in global market account for 400 million dollars. Despite processing limitations and higher costs, the global market for natural colours is estimated to be more than 939 million dollars (Espszezola, 1998). Color is recognized as a major factor affecting food acceptance. The consumer expects a specific food to possess a well defined colour and rejects any appreciable deviation from the normal. The change in colour during the preparation of food is a useful guide to quality control and is used by many food processors as the criterion for selecting raw materials. The characteristic colour of raw food is due to the natural pigments present in the plant and animal material. These can be enhanced in processed food products through the addition of food colourants. Addition of colour can make up for the colour losses during processing. Some of the major groups of colours are anthocyanins, carotenoids, betalains, chlorophylls, flavones and chalcones. Some of the plant sources of pigments are kokum, roscelle, chilli, marigold, beetroot, grapes and safflower. Sources of natural colours can be plants, animals or microbes. Fruits and vegetables form one of the main plant sources of pigments. Some of the plant materials rich in colours viz., alfalfa, marigold, safflower, strawberry, aronia fruits, grapes, red cherries have been exploited for pigment extraction and the results have shown positive effects. Some of the interesting features of the work carried out by researchers in this area are presented in the following sections.

7.1. INTRODUCTION

The cultivation of wheat (Triticum spp.) reaches far back into history. Wheat was one of the first domesticated food crops and for 8000 years has been the basic staple food of the major civilizations of Europe, West Asia and North Africa. Today, wheat is grown on more land area than any other commercial crop and continues to be the most important food grain source for humans. Its production leads all crops, including rice, maize and potatoes.

Wheat is special in several ways. It is grown on more than 240 million ha, larger than for any other crop, and world trade is greater than for all other crops combined. The raised bread loaf is possible because the wheat kernel contains gluten, an elastic form of protein that traps minute bubbles of carbon dioxide when fermentation occurs in leavened dough, causing the dough to rise (Hanson et al., 1982). It is the best of the cereal foods and provides more nourishment for humans than any other food source. Wheat is a major diet component because of the wheat plant’s agronomic adaptability, ease of grain storage and ease of converting grain into flour for making edible, palatable, interesting and satisfying foods.

Introduction

Earth was a beautiful landscape but man has ruthlessly exploited for his greed specially, in the last century. With rapid industrialization and random urbanization environmental pollution has become a serious problem. Over exploitation of open spaces, ever-increasing number of automobiles and demographic pressure has further aggravated the problem.
 
According to The Hindu, on December 1, 2015 a blanket of smog surrounded Beijing, China, later this smog covered one tenth of China’s area. This situation was recently seen in Delhi, after diwali. It was reported that suspended particulate matter (SPM) content in the air was 14-16 times higher than the permissible limits. So, one of the ways to mitigate this pollution is plating of trees and shrubs as green corridors for abatement of pollution and improvement of environment is an effective way.

Sampling for nematode communities has been the basis for the development of appropriate control strategy. The major purposes of sampling for nematodes include population estimation for general detection, advisory or predictive programme, disease diagnosis and also for research purposes.

Groundnut also known as peanut or monkey nut (Arachis hypogaea L. 2n = 4x = 40, allotetraploid, a species of the legume or bean family, Fabaceae, essentially self-pollinated, with genome 1C=2891 Mbp) is one of the five major oilseeds, namely, soybean, sunflower, groundnut, cottonseed and rapeseed. The global acreage, production and yield during 2018-19 have been 27.49 million hectares, 46.81 million tons and 1700 kg per hectare. The preliminary corresponding figures for 2019-20 have been 26.75 million ha, 45.87 million tons and 1710 kg per ha (USDA, 2000). India and China with more than 4.5 million ha each account for nearly one third of total global acreage and fifty percent of global production (China, 17 million tons and India, 6.69 million tons). Other countries in descending order in terms of area are Sudan, Nigeria, Senegal, Myanmar, Niger, Chad, Guinea, Uganda, Congo and Mozambique. Productivity-wise, USA tops the list (4480 kg/ha) followed by China (3750 kg/ ha). India with 1400 kg/ha is at the average position.

The vision 2020 document of the Department of Agriculture and Co-operation envisages that “the tools of ICT will provide networking of Agriculture Sector not only in the country but also globally and the Centre and State Government Departments will have reservoir of databases” and also “bring farmers, researchers, scientists and administrators together by establishing ”Agriculture Online” through exchange of ideas and information”. To get realize the vision 2020 a large number of agriculture based websites and web portals have been established in India which is working for wellbeing of farming community. Majority of agricultural websites and web portals are providing need based technological information to the farmers as well as extension professionals. To revitalize our extension system these web based services can be used as ICT tool by extension personnel and farmers also. Therefore, to get access services from these websites and web portals or to replicate these ideologies in other part of country, elementary knowledge of working process and services available on these websites & web portals is essential. This chapter will provide a brief description about major ICT based projects dedicated to Indian farmers.

16.1 What is Sustainable Development?

Sustainable development (SD) is a pattern of resource use that aims to meet human needs while preserving the environment so that these needs can be met not only in the present, but also for generations to come (sometimes taught as ELF-Environment, Local people, Future). The term was first  coined by the Brundtland Commission and defined sustainable development as “development that meets the needs of the present without compromising the ability of future generations to meet their own needs” (UN, 1987; Smith and Rees, 1998)

1.    What is Surimi?
    
2.    Fisheries Resources for Surimi Production

    
3.    Historical Perspective of the Surimi Industry
    
4.    Present World Scenario of Surimi Industry

5.    Surimi Industry in India
    
6.    Processing Technology for Surimi from Light Muscle Fish 
    6.1     Types of fish used for surimi
    6.2     Heading, gutting, and deboning
    6.3     Mincing
    6.4     Washing and dewatering
    6.5     Stabilizing surimi with cryoprotectants
    6.6      Rapid freezing and packaging
    
7.    Surimi Processing from Dark Muscle Fish
    
8.    Quality Evaluation of Surimi
    
9.    Microbial Quality of Surimi
    
10.    Surimi based Products
    10.1     Fish cakes
    10.2     Fish balls
    10.3     Crab analogs (Crab leg meat analog)
    
11.    Scallop Analogs
    
12.    Moulded Products
    
13.    Important Considerations in Surimi and Surimi based Products
    13.1    Gelation
    
14.    Functional Properties of Surimi

15.    Cryoprotectants in Surimi
    15.1    Mechanism of action of cryoprotectants
    
16.    Future Development in Fish Protein Stabilization
    
References

24. IGNEOUS ROCKS

Introduction : Petros = rocks and logos = science

Petrology means the science of rocks. It deals with the mode of occurrence composition, classification and origin of rocks and their relation to geological processes and history of the earth.

Rocks can be studies in two ways : The study of rocks as specimens in the laboratory is called Petrography which places emphasis on the purely descriptive part from textural mineralogical and chemical point of view. Petrogenesis deals with the origin and processes of formation of rocks. Petrology is a broader term which includes both petrography and petrogenesis.

Igneous rocks are formed by cooling and solidification of magma, either underneath the earth’s surface or above the earth’s surface.

Multipurpose trees and shrubs are defined as all woody perennials that are purposefully grown to provide more than one significant contribution to the production and/or service functions of a land-use system that they occupy. In agroforestry systems, different species of trees and shrubs can be planted with many types of crops in a variety of patterns. Thus, it is required to know about the methods of propagation and nursery raising, planting and other silvicultural management practices along with the diverse uses of multipurpose trees and shrubs of tropical and subtropical areas before their selection for forestry and agroforestry activities. It is important to select the most suitable tree species since it is not easy to replace them once they have been planted.

MANGIUM (Acacia mangium)

Acacia mangium is a single-stemmed evergreen tree that grows to 25-35 m in height and up to 60 cm in diameter. The bole is usually straight, often fluted near the base, free of branches for up to half its height. Mangium is native to Australia, Indonesia and Papua New Guinea. However, it tolerates varied site conditions and has adaptability to different planting objectives. Mangium shows most vigorous growth on well-drained, fertile soils in high rainfall areas in the humid tropics. It is valued for its rapid growth and has been planted throughout the humid tropics and is a major plantation species in the Asia-Pacific. Provenances from Papua New Guinea consistently show better growth in height and diameter.

General Effect of Mutation

Gene mutations are molecular changes in the DNA sequence of a gene

Gene mutations can alter the coding sequence within a gene

Gene mutations are also given names that describe how they affect the wild-type genotype and phenotype

Gene mutations can occur outside of the coding sequence and still influence gene expression

DNA sequences known as trinucleotide repeats may cause mutation

Changes in chromosome structure can affect the expression of a gene

Mutations can occur in germ line or somatic cells

There is no doubt that after independence, particularly during 1966-68, the use of hybrid and composite seeds of various crops, chemical fertilizers and pesticides resulted in an increase in the Indian agricultural output leading to ìGreen Revolutionî. But quite soon, the deleterious effects of farming based on chemical Organic Farming for Sustainable Agriculture 105 methods came to fore.

Programming techniques are used the mathematical tools by the scientists, economists, and planners to specify the optimum combination of resources and enterprises in farms and firms, to identify the profit maximizing mixes of commodities to be produced, to specify the cost minimizing methods of production and transportation of goods, to identify the least cost locations from which raw materials can be purchased, to determine the locations of production at which a particular commodity should be produced and the consumption centres to which it should be shipped, and to specify the least cost ingredients of a feed or ration which must meet the specified nutritional requirements. Programming techniques can be either linear or non-linear. Although several non-linear programming techniques (like quadratic, integer, separable, dynamic programming, etc., which are very complex to work with) are available, we will largely deal with linear programming technique and to a certain extent will brief the theory of dynamic programming.

1. Introduction

Afghanistan imperiled by decades of war, is  now a country on the rebound. With the days of relative peace up on the Afghan people, resources are being gathered and projects put onto place, in an effort to revitalize the previously stagnant economy. The rehabilitation of the agricultural economy in Afghanistan depends to a large extent on whether Afghanistan’s Agricultural Sector will be able to recover from the effects of war, serious consecutive droughts and a multitude of endemic crop/ livestock diseases. Afghanistan is a pastoral country with more than 85 per cent of the land area incapable of growing even a narrow range of crops, thus being largely rangeland.  Agriculture produces food, provides food security, enhances crop production, generates cash incomes for rural and urban populations, provides fuel and transport, and produces value added goods which can have multiplier effects and creates a need for services.  Furthermore, agricultural diversity production and income provide year-round employment, and spread risk. Livestock also form a major capital reserve of farming households.

A pipe is connected to a tank or cistern. It is used to fill (inlet) or empty (outlet) the tank. Therefore, Inlet refers to a pipe which is connected to fill a tank is known as an inlet, while outlet refeRs to a pipe which is connected to empty a tank is known as an outlet. Generally the problems on pipes and cisterns are similar to problems on time and work. In pipes and cistern problems, the amount of work done is the part of the tank of filled or emptied. And, the time taken to do a piece of work is the time taken to fill or empty a tank completely or to a desired level. Following points should be remembered to solve the probles;

Introduction

Eradication of malnutrition and hunger (Sustainable Development Goal, SDG-2) are the major challenges to humanity. Availability of sufficient nutritionally balanced food is the prerequisite for ensuring global food security. Food security is also critical for achievement of SDG 1 (poverty eradication) and SDG 3 (health and well-being) (UNDP, 2019). Changing climatic conditions accompanied by global warming not only acts a major threat for achievement of SDGs but could actually lead to the reversal of the progress already made. The escalating global temperature has jeopardized the food security throughout the world. A great decrease in the global crop yield has been suspected even with a 2°C rise in temperature. On field, it is often associated with crop nutrient loss, less accumulation of micronutrients and low availability of micro-minerals like iron and zinc. Additionally, the effect of the rainfall and temperature has also been observed. The global food prices are projected to increase by 3–84% by 2050 due to the fluctuations in rainfall and temperature (Hoegh-Guldberg et al., 2018).

Millets are the small seeded grains which belong to family Grassacae/Poaceae. Traditionally, millets are used for the food and feed purpose and are among the oldest cultivated crops. The millet species of commercial importance are proso (Panicum miliaceum), foxtail (Setaria italica), barnyard (Echinochloa esculenta), finger (Eleusine coracana), little (Panicum sumatrense) and pearl (Pennisetum glaucum) in different regions of the world. In India, foxtail millet (priyangava), barnyard millet (aanava) and black finger millet (shyaamaka) have been mentioned even in the Yajurveda texts of 4500 BC (Morya et al., 2017). The records of consumption of foxtail and proso millet are as old as 2000 to 1000 BC in China. Cultivation of foxtail millet in Korean peninsula is documented around 3,500–2,000 BC. Foxtail millet is the oldest of all the cultivated millets and is believed to be originated in Southern Asia. From there, it was spread to Europian nations. In the west, cultivation of millets majorly started after 1850 (ICRISAT, 2019)

Project management involves the use of knowledge, skills, tools, and techniques to design activities to fulfill project requirements. In other words, project management encompasses the skills, tools and management processes needed to successfully implement a project.

Project Management comprises

• Skill. Expert knowledge, skills and experience are necessary to reduce the risk level of a project and thereby enhance the likelihood of its success.

• A set of tools. Project managers use a variety of tools to improve their chances of success. Examples include document templates, records, planning software, modeling software, inspection checklists and inspection forms.

• Sequence of processes. Various Management methods and procedures are necessary to oversee and regulate the time, cost, quality and scope of projects. For example, time management, quality management, cost management, change management, problem management and risk management.

Project Management is adequate when or when should you use project man agement techniques