23-12-2017, 04:13 PM
Thank a lot for uploading the project.
I will tell this site to all of my friends
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chemistry project on food preservatives for class 12
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Thank a lot for uploading the project.
I will tell this site to all of my friends
26-12-2017, 09:41 AM
A preservative is a substance or chemical that is added to products such as food, beverages, drugs, paints, biological samples, cosmetics, wood and many other products to prevent decomposition due to microbial growth or undesirable chemical changes. In general preservation is implemented in two modes, chemical and physical. Chemical conservation involves adding chemical compounds to the product. Physical preservation involves processes such as cooling or drying. Food preservative additives reduce the risk of foodborne infections, decrease microbial spoilage and preserve fresh attributes and nutritional quality. Some physical techniques for food preservation include dehydration, UV-C radiation, lyophilization and refrigeration. Chemical preservation and physical preservation techniques are sometimes combined.
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