Natamycin (E235)

Purpose and Function

Natamycin (E235) is a natural antifungal preservative used to inhibit the growth of mold and yeast in food products. It is produced by the bacterium Streptomyces natalensis and is effective at extending the shelf life of various foods. Common applications include:

• Dairy products: Used on the surface of cheeses and fermented dairy products to prevent mold growth.
• Meat products: Applied to cured meats, sausages, and other processed meat products to inhibit the growth of fungi.
• Beverages: Sometimes used in fruit juices, wines, and other liquid products to prevent spoilage caused by yeast.
• Baked goods and baked goods packaging: Can be used as a coating on the surface of baked products to extend shelf life.

Natamycin (E235) is particularly valued for its antifungal properties without affecting the growth of bacteria, making it suitable for products like cheese, where bacterial cultures are necessary for fermentation.

Potential Risks and Side Effects

Natamycin (E235) is considered safe when used within regulated limits, but there are some potential risks and considerations:

• Limited absorption: When used in food, natamycin is not absorbed by the human digestive system and is excreted without affecting human health.
• Skin and eye irritation: In some rare cases, natamycin may cause irritation if it comes in contact with the skin or eyes.
• Natural antifungal agent: Since natamycin is derived from natural sources, it is less likely to cause allergic reactions compared to synthetic antifungal agents.
• Regulatory approval: Natamycin is approved for use in many countries, including the European Union, the United States, and Australia. Regulatory authorities such as the FDA and EFSA have set maximum permissible levels for its use in food products.

Overall, it is widely recognized as safe and is used effectively as a food preservative to prevent fungal spoilage.