Q222
Class II preservatives like KMS and benzoic acid are added to
A.
Check respiration
B.
Preserve colour
C.
Inhibit microbial growth
AnswerD.
Reduce ethylene production
Answer: Option C
Solution
Answer: Option C
Solution:
Class II preservatives like KMS and benzoic acid are added to inhibit microbial growth.Class II preservatives are obtained by chemical derivation of compounds.
KMS is Potassium Metabisulphite. It is a white crystalline powder with a pungent odour. It is mainly used as an antioxidant or chemical sterilant.
Benzoic acid (BA) is a commonly used antimicrobial preservative in food and beverages, especially in carbonated beverages, as it presents its strongest antibacterial activity at pH 2.5 - 4.0. BA has inhibitory effects on the proliferation of bacteria and yeasts, a major cause of food spoilage.