Which of the following is not used as a food preservative?

Sodium salt of benzoic acid

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Sodium salt of sorbic acid

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Sodium salt of propanoic acid

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Sodium salt of palmitic acid

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Solution

The correct option is D Sodium salt of palmitic acid
Sodium benzoate is the most important food preservative. Sodium salts of few more acids which can be used as preservatives are sorbic acid and propanoic acid.
Palmitic acid is used to produce soaps, cosmetics, and industrial mold release agents. These applications use sodium palmitate (Sodium salt of palmitic acid), which is commonly obtained by the saponification of palm oil.
Therefore it is not used as food preservative
Hence, option D is correct.

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