The role of sodium metabisulfite
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2022-05-23 15:21:11.493
Sodium metabisulfite is a widely used additive, which has many functions in addition to its bleaching function.
1. Anticorrosion effect. Sulfurous acid can act as a preservative. Undissociated sulfurous acid is thought to inhibit yeast, bacteria, etc. It has been reported that the inhibitory effect of undissociated sulfurous acid on Escherichia coli is 1000 times stronger than that of hydrogen sulfate. Sulfur dioxide has the strongest effect on microorganisms when it is acidic.
2. Play the role of loosening agent. Can be used as a bulking agent.
3. Antioxidant effect. Sulfurous acid has a strong oxidizing effect. Because sulfurous acid is a strong reducing agent, it can consume oxygen in fruit and vegetable tissues and inhibit the activity of oxidase. It can prevent the oxidative damage of vitamin C in fruits and vegetables.
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