What are the specific uses and dosages of sodium sulfite in the food industry?
2025-04-28
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Sodium sulfite is often used as bleaching agent, preservative and antioxidant in food industry. The following is its specific use method and dosage:
Usage
Dissolution: Usually dissolve sodium sulfite in the right amount of water first, and prepare a certain concentration of solution. If dealing with fruit preservation, it can be made into an aqueous solution with a concentration of 0.2%-0.4% to soak fruits.
Control the timing of addition: It should be added at the appropriate stage of food processing. For example, in beer brewing, it is usually added 10-15 minutes before the end of the wort boiling to remove the dissolved oxygen in the wort and prevent the beer from oxidizing and deteriorating.
Ensure uniform addition: For solid foods, such as cookies, pastries, etc., the solution can be sprayed evenly on the surface of the food; for liquid foods, such as beverages, fruit juices, etc., the solution should be added slowly under stirring conditions, so as to make it fully mixed.
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