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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.
Explain Matching energy intake to energy expenditure? To be in energy balance, an athlete needs to consume about the same number of calories that he or she expends on a daily
write a note on clonning
Studying the main parts of a flower Study specimens of large easy flowers such as tulips or lilies. Count the stamens and observe how they are arranged about the central pistil
Q. Associated Foods with escherichia coli? Associated Foods: E. coli is the etiologic agent of food poisoning involves variety of foods such as cream pie, mashed potatoes, cr
Fl u o r osi s Continual ingestion of small amount of fluoride through feed or water leads to fluorosis in animals. The toxic effects are based on amount of fluorine inges
Q. Nutrition Management Goals for oesophagitis? The objectives of nutritional care include the following: 1. Prevention of irritation of the inflamed oesophageal mucosa (in
Elastase The inactive proelastase is activated by trypsin to the active form elastase. Elastase attacks peptide bonds next to the small amino acid residues such 3s g
are viruses cellular organisms
What is the concept of Mesonephric? Replaces the pronephros during development and is retained as functional kidney in adult fish and amphibians. Formed posterior to pronephros
why are life forms significant?
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