FOOD TECHNOLOGY

FOOD CHEMISTRY

FOOD ADDITIVES AND PRESERVATIVES

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which bleaching agent is NOT approved for using in food by Thai FDA?
A
Sodium potassium sulfite
B
Sulphur dioxide
C
Sodium hydrosulfite
D
Sodium dioxide
Explanation: 

Detailed explanation-1: -Sodium dithionite is a reductive bleaching chemical. It is also known as sodium hydrosulfite. Reductive bleaching is especially essential not only for bleaching but also for removing color from colored recovered paper and carbonless paper (Hache et al., 1994, 2001).

Detailed explanation-2: -Sodium Hydrosulfide is a colorless to lemon-colored, crystalline (sand-like) solid with a rotten egg odor. It is used to make heavy water for nuclear reactors, as a chemical intermediate and pulping agent in making paper, and in making dyes and other chemicals.

Detailed explanation-3: -Sodium Hydrosulphite, Grade Standard: Food Grade, Packaging Size: 100 Kg. Sodium dithionite (also known as sodium hydrosulfite) is a white crystalline powder with a weak sulfurous odor. It is the sodium salt of dithionous acid.

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