The effect of sodium metabisulfite on food
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2022-05-23 15:21:44.241
Sodium metabisulfite is mainly used as a chemical reducing agent to prevent the blackening and deterioration of sea shrimp and aquatic products. Generally, it is added directly on the fishing boat after the fishermen catch it. Generally, it is used more in summer, less in spring and autumn, and basically in winter. is not used. In aquatic products, sodium metabisulfite will be decomposed into sulfur dioxide. When sulfur dioxide encounters water, it will generate sulfurous acid. Sulfurous acid has reducibility and can effectively control the deterioration of aquatic products.
It blocks the process of microbial physiological oxidation, inhibits the activity of food oxidase and chromophore, and shows its bleaching, decolorizing, antiseptic and antioxidant effects. Sodium metabisulfite is used in dried fruits, fruits and vegetables, wine, etc. in my country's regulations. The scope of application does not include aquatic products. Therefore, in theory, sodium metabisulfite cannot be used in aquatic products. But actually fishing boats are using the substance. But this substance is a United Nations-recommended sea fishing shrimp preservative. Therefore, the local standard of our province also mentions the issue of the use limit, so it is neither necessary nor feasible to prohibit the use.
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