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Explain Use of food Additives - method of food preservation?
Food additives may be defined as substances added intentionally to food, generally, in small quantities to improve its appearance, flavour, texture or storage properties. These may be classified into different broad groups. Those food additives, which are specifically added to prevent the deterioration or decomposition of a food, have been referred to as chemical preservatives. In food preservation, the added substances may be grouped into two. The first one includes the use of sugar, salt, spices, acetic acid (vinegar) and alcohol, and is referred to as class I preservatives and is considered to be relatively safe to humans. The second group includes the use of benzoic acid, sulfur dioxide, nitrates and nitrites and a variety of neutralizers, firming agents and bleaching agents and referred to as class II preservatives and is considered to be relatively safe to humans, but within the permissible doses prescribed by the Food Regulatory bodies because higher concentrations can be a health hazard. Preservation of foods by the chemicals is effected by interfering with the cell membrane of the microorganism, their enzyme activity and genetic mechanism; by acting as antioxidants.
explain spermatogenesis
At 1 AM, a researcher places a healthy squid giant axon in a bath of normal squid physiological extracellular saline and internally perfuses the axon with normal squid intracellula
Q. How is reproduction done in beings of the class Reptilia? These beings reproduce sexually through internal fecundation by means of copulation between female and male individ
Nucleotides Compounds consisting of a nitrogenous base, a pentose sugar and a phosphate group.
Micrographia is abnormally small, cramped handwriting and/or the progression to continually smaller handwriting. This is one of the symptoms of Parkinson''s disease.
Increase in cardio-thoracic ratio is a relatively specific indicator of left ventricular end-diastolic volume. Left atrial enlargement is seen as double density shadow, lifting up
Define the Food System in space? Mercury (1961-1963) astronauts had to eat bite-sized cubes, freeze dried powders, and semi liquids stuffed in aluminium tubes. For most asbonau
Define General procedure of titration - Nutritional Biochemistry? In general a titration requires that we add precise amounts of the known titrant to the unknown analyte or ti
What is bioremediation? Bioremediation is the use of microorganisms, as bacteria, protists and fungi, to degrade noxious substances turning them into non toxic or less toxic su
PRINCIPLES OF DARWINISM - 1 . OVERPRODUCTION (PRODIGALITY) - All organisms have enormous fertility and they multiply in geometric ratio. Examples of over product
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