Question

what are food preservatives ? give example​

Answer 1

Answer:

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Explanation:

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Answer 2

Explanation:

Food preservatives constitute a group of compounds of widely different molecular structures; they are organic and inorganic substances with different functional groups and tendencies to form ions. There are no procedures that are generally applicable to the analysis of preservatives as a class of food additive; the procedures are specific to the preservative being analyzed. The lowest concentrations of commonly used preservatives are of the order of a few milligrams per kilogram of food, and, with few exceptions, recommended or statutory methods of analysis are designed to give a good accuracy at levels of 10 to > 1000 mg of preservative per kilogram of food. The question of the lower limit of detection is rarely an issue, unless it is desired to use small sample sizes, e.g., < 1 g, or to determine whether or not a food or its ingredients had been treated with a preservative.