题目内容

Sodium benzoate is only effective in acidic media, so benzoic acid and its salts are often used in highly acidic foods, and combined with low temperature sterilization to play a preservative role.

查看答案

搜索结果不匹配？点我反馈

更多问题

Peroxides and chlorine preparations are oxidized preservatives. Sulfurous acid and its salts belong to the category of reduced preservatives.

The following substances can be used to make fresh-keeping agent :（）.

A. Paraffin oil
B. Chitin
C. Rosin
D. Whey protein

The following water-soluble antioxidants are ( ).

A. L-ascorbic acid
B. isoascorbic acid
C. tocopherol
D. phytic acid

______ is an important food preservation system combines salting to selectively control microorganisms and fermentation to stabilize the treated materials.