Discussion
A common preservative used in jam and pickles is
Answer: A
Correct answer: Sodium benzoate
Sodium benzoate is the standard chemical preservative for jams, squashes and pickles. It works only in acid conditions, where it converts to benzoic acid and enters the microbial cell, disrupting its metabolism - which is why it suits acidic foods and not others. Salt and sugar preserve too, but osmotically rather than as chemical preservatives.
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