Which of the following are not used as food preservatives?

1.  Table salt

2.  Sodium hydrogen carbonate

3.  Cane sugar

4.  Benzoic acid


 

(b, c)

Food preservatives prevent spoilage of food due to microbial growth. Te most commonly used preservatives include table salt, sugar, vegetable oils, and sodium benzoate. Sodium hydrogen carbonate and cane sugar are not used as food preservatives.