What is Sodium Metabisulfite in Food?

Sodium metabisulfite is a chemical compound commonly used as a food additive.

Purpose in Food

• Preservative: It helps to prevent spoilage from bacteria, molds, and yeast.
• Antioxidant: It protects food from oxidation, which preserves color and flavor.
• Bleaching Agent: It is sometimes used to bleach certain foods, such as coconut or dried fruits.

Common Foods Containing Sodium Metabisulfite

• Dried fruits (apricots, raisins, etc.)
• Wine and beer
• Pickled foods
• Processed potato products
• Juices and soft drinks

Safety and Allergies

• Sodium metabisulfite is generally recognized as safe (GRAS) when used in small amounts.
• Some people, especially those with asthma, may be sensitive and can experience allergic reactions or breathing difficulties.
• Foods containing this additive must be labeled, especially if the concentration exceeds certain limits.

Summary

Sodium metabisulfite is widely used in the food industry to preserve freshness, prevent oxidation, and maintain the appearance of various foods. While safe for most people, it can cause reactions in sensitive individuals.