Preservative is a substance which when added to food, is capable of inhibiting, retarding or arresting the process of fermentation, acidification or other decomposition of food.
It shall be divided into following classes :
CLASS I preservatives are :
(a) common salt
(b) sugar
(c) dextrose
(d)Glucose
(e)wood smoke
(f) spices
(g) vinegar or acetic acid
(h)honey
CLASS II preservatives are :
(a) Benzoic acid
(b) sulfuric acid
(c)Nitrates or Nitrites of sodium or potassium in respect of food like Jam, pickled meat
(d) Sorbic acid
(e)Niacin
(d) sodium and calcium propionate
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