eChapters

Structure

Structural unit of edible portion of most fruits and vegetables is the parenchyma cells and makes up bulk of cells. A parenchyma cell is rather thin walled and may be polygonal or cubical in shape.  Walls of parenchyma cells in young plants are composed almost entirely of fibrils of cellulose. In parenchyma cells of plants actively metabolising protoplast portion represents only about 5% of total cell volume. This protoplast is rather film like and is pressed against cell wall by large water filled central vacuole.  Protoplast has inner and outer semi permeable membrane layers between which is confined cytoplasm and its nucleus. 

The word meat comes from the old english word mete, which referred to food in general. Most often this means the skeletal muscle and associated fat but it may also describe other edible tissues such as organs, livers, skin, brains, bone marrow, kidneys and lungs etc. In other words we can say meat is those animal tissues which are suitable for use as food by the man. It is composed of numerous types of tissues like muscle tissues, epithelial tissues and nervous tissues but the major component of meat is muscle. Particularly skeletal muscle is the principal source of muscle tissue in meat while smooth muscle contributes little to meat. The muscle and connective tissues are the major compositional components and contributes towards qualitative and quantitative characteristics of meat. Broadly muscle can be classified into striated and smooth muscles. Striated muscles have transverse band pattern as seen in skeletal and cardiac muscle. However, smooth muscles do not show such pattern and mainly found as a component of blood vessels.

This chapter introduces the biological structure and formation of the hen egg. It examines the shell, cuticle, shell membranes, albumen, yolk, vitelline membrane, chalazae and germinal disc and explains the functions of each component. The chapter also describes the reproductive system of the laying hen, oogenesis and the sequence and timing of egg formation within the oviduct. Comparative egg structures of other poultry species and shell pigmentation are discussed, along with shell ultrastructure and quantitative composition.

ABSTRACT

Homegarden is a least studied agroecosystem of the world. Present study, conducted in 430 homegardens before Tsunami in five island groups namely North Andaman, Middle Andaman, South Andaman, Car Nicobar and Noncowry (former three, Andaman group and later two, Nicobar group of islands), India, reports composition, species structure and its distribution and functioning of the system. The homegarden is comprised of 6 components i.e., garden, livestock, poultry, fishpond, homesteads, and rice fields. Coconut and arecanut trees predominate in the garden. Fruits, spices and agroforestry trees are other ligneous species, which together with the former trees form multistorey canopy structure. But, composition and dominance of the tree species vary across the islands. Arecanut to coconut ratio is greatest invariably in all the homegardens in the Andaman. Family members do maximum 70 per cent labour in the homegarden and consume 35-65 per cent fruits, poultry, livestock and fishpond products, however, surplus is sold. Free range grazing in nearby protected forests is an age old practice of animal feeding whereas poultry birds are fed among the garden trees and household refuge. Livestock includes cattle, buffaloes and goats in Andaman and pig and goat in Nicobar. Cattle are used for milk, he buffaloes as a draft animal and pig and goat for meat. Cattle, mostly local breed, yield a little amount of milk, an average, 1 liter cow-1. Plantation crops production is low: coconut 18-30 nuts palm^-1 and arecanut 0.75 kg palm^-1. The homegardens serve the subsistence as well as earn income, but low (US$ 2357) to the house. In Nicobar, Nicobarese huts interspersed in a big natural coconut plantation form the homegarden. Tribe Nicobarese do not know crop husbandry, rather they pursue round the year sea fishing and pig rearing. They relish most pork, unripe boiled wild banana, Nicobari tuber, fruits and seeds of Pendanus and fried fish.

The heart failure is an important cause of morbidity and mortality in animals and man. It is the end stage complex event of cardio-vascular diseases. For having a better understanding of heart failure in animals for adopting rational therapeutic management, it is utmost necessary to have thorough knowledge about heart, its structures, its nerve supplies, its vasculature, current generation and conduction as well as its functioning in the healthy subjects.

Kidney is one of the main excretory organs of the body. By secreting urine the kidney serves as the outstanding guardian of the milieu interieur. The main functions of the kidney in the maintenance of body homeostasis are listed below.

1. Maintenance of proper osmotic concentrations.
2. Maintenance of blood volume.
3. Maintenance of ion concentration.
4. Removal of nitrogenous end products of protein metabolism primarily urea, creatinine and ammonia.
5. Removal of foreign substances and/or their metabolic end products.

Thus, kidney control the concentration of most of the constituents of body fluids. In case of birds, the primary end product of protein metabolism is uric acid instead of urea. So, the major excretory product through urine in case of birds is uric acid.

Briefly, the kidney form urine in the following way. Endowed with a relatively huge blood supply, the renal glomeruli filter about 200 litres per 24 hours of protein free fluid from the blood in human being ( ie 50-60 times the plasma volume). This filtrate, which contains the soluble non protein components of the plasma, is submitted to extensive reabsorption by the renal tubules. The relative control on the reabsorption process by the kidney, is the key mechanism by which the kidney is able to maintain the composition of the milieu interieur.

Kidney also releases several hormones like renin, erythropoietin and prostaglandins, which have the capacity to influence cells and alter their physiological processes.

Substances which are in excess of the body and/or are harmful need to be removed constantly. This function is carried out by the excretory organs which include skin, gastrointestinal tract and kidney. Skin excretes water and salts in the form of sweat. Gastrointestinal tract removes undigested food material as well as some heavy metals in the form of faeces. Kidneys are the main excretory organs which together with a pair of ureters, a urinary bladder and urethra constitute the excretory system. Renal function is essential for homeostasis.

Structure of a business or legal framework

1. Sole proprietorship: A private company is a form where an individual is the exclusive proprietor of the business. It constitutes a straightforward setup where the owner is one person who manages the everyday operations of the company. In this case, the business is not regarded as an independent entity. Therefore, earnings and debts are merged into their personal accounts, which are assessed and taxed at the individual level.

Advantages of the sole proprietorship structure include

• Complete Control: As a sole proprietor, you have the right to make all business decisions and do not have to negotiate with other partners, managers or shareholders as in other structures.

• Easier Startup: The creation of a private company does not necessitate completing forms or remitting a state fee. This can ease the procedure and render it more affordable.

• Simple tax reporting: Because a business is not legally a separate entity, your income tax return includes the expenses and income of the business. As an added bonus, you can use business losses to offset your earned income, which can result in a higher taxable income.

• Privacy: Sole proprietors do not have to file annual reports with state or federal governments. Therefore, the company is not disclosed in the same way as in other structures.

Bacteria can be defined as a group of diverse and ubiquitous prokaryotic single cell microorganisms. The size of bacteria varies with genera/species. In cocci the diameter varies between 0.5-1 µm. The measurement of bacillus / rod shaped bacteria is 4-8 µm ? 1-1.25 µm. The surface area and volume ratio of bacteria is very high. The nutrients are absorbed through a large surface area and it is rapidly distributed into a small volume. So the growth rate and metabolism of bacteria is very high. The bacterial cell mass is packed near the surface and no circulatory system is required to distribute the nutrients. The growth and metabolism rate of bacilli are more than cocci because surface area and volume ratio of a sphere (cocci) is lowest among all the geometrical forms.

Shape of bacteria

The shape of bacteria is mostly regulated by the rigid cell wall covering the bacteria. Different shapes of bacteria are observed.

The information that drives the process of life is encoded in the genome of the organism. Structurally defined, a genome is an organization of genetic information consisting of nucleic acids (deoxyribonucleic acid or ribonucleic acid). Arrangement of nitrogenous bases in the nucleic acid codes the information for execution of cellular processes. Four types of bases (Adenine, Guanine, Cytosine and Thymine) are present in deoxyribonucleic acid (DNA) while in RNA Uracil replaces thymine group of any three bases on transcribed RNA represent a codon. With four types of bases, sixty four types of codons can be formed. Genetic information encrypted in these codons is released in the form of arrangement of polypeptides consisting proteins via mRNA intermediate. This universal process of flow of genetic information from DNA to RNA to protein is known as the central dogma of life. The whole set of information coded in 64 codons, out of which 61 codes for one or more amino acids (building block of polypeptides/proteins) and three indicating where to stop is called the book of life or genetic code.

X-ray diffraction (XRD) is an important experimental tool used in determining crustal structure of material system in bulk and nanoregimes. Therefore, it is important to understand the basic concepts of XRD.

3.1 Introduction

Eggs are composed of three main parts; the eggshell with the eggshell membrane, the albumen or white, and the yolk. The yolk is surrounded by albumen, which in turn is enveloped by eggshell membranes and finally a hard eggshell.

3.2 Eggshell

The eggshell is composed of a foamy layer of cuticle, a calcite or calcium carbonate layer, and two shell membranes. The ultrastructurally the eggshell includes shell membranes, mammillary zone, calcium reserve assembly, palisades, and cuticle, with 7,000 – 17,000 funnel shaped pore canals distributed unevenly on the shell surface for exchange for water and gases

Size shape and Appearance of Bacterial cells

Bacteria vary significantly in their morphology, that is in their appearance. They range in size from 0.2 μm to1 μm in diameter and 1 μm to 10 μm in length. There are three basic shapes of cells :

1. Spherical

2. Rod-shaped

3. Spiral.

Motives of joining SHG

Sensitization for joining SHG does not alone help to achieve immediate result. Motives when combined with inspiration, an individual is tempted to act so also the case with sample SHG who expressed motives for joining SHG as follows.

Even though we are now in the atomic age, the idea of the atom is not new. More than 2,000 years ago, the Greek philosopher Democritus suggested that any matter is composed of tiny indestructible particles called Atoms. The word atom is derived from the Greek word Atoms meaning something that can not be cut further. However not much attention was paid to this concept till 1808, when Dalton proposed the famous “Atomic theory”. According to this theory, “all matter is composed of tiny indivisible particles called ‘Atom’. Combining the ideas of Lavoisier, Boyle and his own, Dalton proposed that atoms of elements combine together to make molecules of a compound. This was a great step in the concept of the atom and compounds, since this gave a clear picture of how the supposedly smallest particles of matter called atoms could be put together to form the various familiar substances found in nature.

The chromosomes provide physical basis by which genetical stability and continuity of individuals and populations are maintained in each generation. Chromosomes also play an important role to generate variation which is an essential component of evolutionary process. Although crossing over during meiosis is responsible for generation of variability, but structural changes in chromosome too are important for causing variation and evolution, since genetic and cytological analysis of individuals of related species or isolated populations within the species have shown that they may differ by various kinds of changes in their chromosomal structure. The structural changes usually may result from spontaneous chromosome breakage. But under normal condition/s such breakage is an rare event and its frequency is dependent upon environmental conditions, i.e., temperature, various high energy radiations (e.g. X, λ and β-rays) and some chemicals. Chromosome breakage is reported to be higher in some hybrids and in presence of particular genes. Certain chromosomes and chromosomal segments (centromeric and other heterochromatic regions) are more likely to undergo breakage. But stability and continuity of structural changes in the chromosomes depend on the behavior of the broken ends. There is no change if broken end rejoins at the same chromosome but a change may occur if it rejoins with the end of other chromosome or if remains unattached. In case of a pair of homologous chromosomes if one chromosome has any structural change and other one is normal we customarily call it a structural hybrid.

Source

? Consumption of seeds (dog/cat), Baits containing strychinine kept for foxes, rats, mice

? Cattle are more susceptible to strychnine poisoning parenterally than orally because strychnine is destroyed in the rumen

? Ingestion of birds or rats poisoned with strychnine and ingestion of strychnine treated seeds of peanuts, wheat (in human).

? In Seeds, 1.53- 3.24% total alkaloids out of which 50% is strychnine.

? Loganin (glycoside), Vomicine, α-colubrine, betacolubrine, pseudo strychinine (alkaloid), Brucine, strychnine and strychnicine (leaves), Brucine and small amount of strychnine (bark)

? Average amount of strychnine and brucine in nuxvomica seeds is 1.23 and 1.55% respectively.

? Strychnine- an indole alkaloid found in seeds of Strychnos nuxvomica is extremely stable and can be detected in specimens many years even after the death of animals.

? It is rapidly absorbed from the GIT and parentrally significant amount found in liver and kidney while small amount reaches CNS.

? Metabolized by hepatic MFOs and primarily excreted in urine within 10 hrs.

Source

? Consumption of seeds (dog/cat), Baits containing strychinine kept for foxes, rats, mice

? Cattle are more susceptible to strychnine poisoning parenterally than orally because strychnine is destroyed in the rumen

? Ingestion of birds or rats poisoned with strychnine and ingestion of strychnine treated seeds of peanuts, wheat (in human).

? In Seeds, 1.53- 3.24% total alkaloids out of which 50% is strychnine.

? Loganin (glycoside), Vomicine, α-colubrine, betacolubrine, pseudo strychinine (alkaloid), Brucine, strychnine and strychnicine (leaves), Brucine and small amount of strychnine (bark)

? Average amount of strychnine and brucine in nuxvomica seeds is 1.23 and 1.55% respectively.

? Strychnine- an indole alkaloid found in seeds of Strychnos nuxvomica is extremely stable and can be detected in specimens many years even after the death of animals.

? It is rapidly absorbed from the GIT and parentrally significant amount found in liver and kidney while small amount reaches CNS.

? Metabolized by hepatic MFOs and primarily excreted in urine within 10 hrs.

Abstract

This review presents an idea on the botanical description, medicinal properties and traditional usage of wild, edible and aromatic plant (Nymphaea alba) in the human nutrition. Nymphaea alba Lin, also known as the White Water lily, White Lotus, or Nenuphar is an aquatic flowering plant of the family Nymphaeaceae. Nymphaea is a weed in India and its production pretty much as good as water chest nut and Nelumbo nucifera. Its rhizome is rich in tannic acid, gallic acid, alkaloids, sterols, flavonoids, glycosides, hydrolysable tannins and high-molecular-weight polyphenolic compounds. It is used as associate aphrodisiac, anodyne, antiscrophulatic, astringent, cardiotonic, demulcent, sedative and antiinflammatory. Further, it conjointly produces calming and sedative effects upon the nervous system, and is beneficial within the treatment of sleep disorder, anxiety and similar disorders. Moreover, the content of starch in the rhizome is said to be 40%. Extensive work has been carried out on agronomic and phenotypic properties for most plants, but relatively little study has been carried out on the properties which are of direct technical and economic interest to competitive food and nonfood industry. Non-conventional food resources and their value addition have attracted attention in the recent yearsfor their potential use as functional ingredients in food formulations, besides food they have also been used for non-food applications. Moreover, Plants provide the predominant ingredients of medicines in most medical traditions. So, there is tremendous potential for the profitable industrial use of these medicinal plants and exploring them for further use. Keywords: Non-conventional food resources, Nymphaea alba, Rhizome.