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One of man's oldest methods of preserving foods is drying or desiccation. The preservation of foods by drying is a direct result of removal of moisture. Microorganisms need water for growth. The exact amount of water needed for growth of microorganisms varies. This water requirement of microorganisms is best expressed in terms of available water or water activity aw, the vapour pressure of the solution (of solutes in water in most foods) divided by the vapour pressure of the solvent (usually water). Thus aw, for pure water would be 1.00. The water activity depends on the number of molecules and ions present in solution, rather than their size. Thus a compound like sodium chloride, which dissociates into two ions in solution, is more effective at reducing the water activity than a compound like sucrose on mole-to-mole basis.
“Define nosocomial infections. Discuss the factors that might influence whether a patient may acquire nosocomial infection. How might these risks be reduced?”
Zooflagellates – Protozoan Zooflagellates are heterotrophs that are free living, commensals or symbiotic or parasitic in other animals. A number of species eg. Trichonynzpha a
CHROMOSOME S AND MOLECULAR HOMOLOGY - The DNA content of diploid cells is similar. Hoyer et al in 1965 showed that DNA of humans was 100% similar with chimpanzee and 94%
Thus animals store surplus carbohydrate as glycogen; plants do so in form of starch. Starch is producing in the stroma of chloroplasts and stored there as starch grains. The Starch
Defone Economic consequences of malnutrition? Figure explains the economic consequences of malnutrition. You would note from the Figure that the economic productivity of the in
Phosphorylation of fructose-6-phosphate Phosphorylation of fructose-6-phosphate: This is an irreversible reaction, catalyzed byphosphofructo72Snase, (PFK- I) a rate-l
Explain the Uses of ISP in Infant formulas Infant formulas Infant formulas, where milk solids have been changed by soy products, are well established commercial products
Explain the Bioelectrical impedance Analysis (BIA)? The difficulty of measuring total body water (TBW) by Isotope Dilution Method led to the search of Bioelectrical Impedance A
Following are the functions of Insulin: 1) Insulin controls the level of the sugar (glucose) in the blood. 2) Insulin permits cells to use sugar (glucose) for energy. Cells c
how do work in human body and animals
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