sodium metabisulfite preservative


Food grade sodium metabisulfite can be used in food processing to improve the taste of food. The main uses are as follows:

1. Bleaching agent. Sodium metabisulfite is used to make flour for foods such as cakes.

2. The leavening agent. Sodium metabisulphite can make the food structure of bread and biscuits loose, and the taste is relatively crisp.

3. Antiseptic and bactericide. Adding sodium metabisulfite to juice, candied fruit and canned food, which can extend the shelf life of food and effectively sterilize.

4. Anti-oxidant preservatives. Sodium metabisulphite has good antioxidant and fresh-keeping effects on seafood, fruits and vegetables.

sodium metabisulfite

Sodium metabisulfite is a white or yellow crystalline powder or small crystal with a strong SO2 odor, a specific gravity of 1.4, soluble in water, and the aqueous solution is acidic. When sodium metabisulfite is in contact with a strong acid, it releases SO2 to form a corresponding salt. When sodium metabisulfite is left in the air, it oxidizes into Na2S2O6, so the product cannot be stored for a long time. Above 150 degrees Celsius, SO2 is decomposed.

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