E938 – Argon

Argon, designated as E938, is a colorless, tasteless, and odorless noble gas that constitutes approximately 0.9% of the Earth’s atmosphere. In the food industry, it is utilized as a packaging gas to preserve the freshness and quality of food products. 

Danger Level: 0 – Safe

Purpose in Products

  • Packaging Gas: Argon is employed to replace the air in food packaging, creating an inert atmosphere that inhibits oxidation and the growth of bacteria and fungi. This process extends the shelf life of perishable items without altering their taste or nutritional value. 

Health Considerations

Argon is chemically inert and does not react with food components, making it safe for use in food packaging. There are no known harmful effects associated with its application as a protective gas for food preservation. 

Impact on Children

There is no specific evidence to suggest that argon has any adverse effects on children when used in food packaging. Its inert nature ensures that it does not interact with food or pose any health risks to consumers of any age.

Impact on Taste

Argon is tasteless and does not alter the flavor, aroma, or texture of food products. Its use in packaging is solely to maintain product freshness by preventing oxidation and spoilage.

Compatibility with Other Additives

As an inert gas, argon does not interact with other food additives or ingredients. It is compatible with various packaging methods and materials used in the food industry.

Natural Occurrence

Argon is naturally present in the Earth’s atmosphere, comprising about 0.9% of the air we breathe. For industrial purposes, it is obtained through the fractional distillation of liquid air. 

Alternatives and Substitutes

Other inert gases used for food packaging include:

  • Nitrogen (E941): Commonly used to displace oxygen in packaging, preventing oxidation and spoilage.
  • Carbon Dioxide (E290): Often used in combination with nitrogen to inhibit microbial growth in food products.

Regulation

Argon (E938) is approved for use as a food additive in the European Union and other regions. Its application as a packaging gas is considered safe, and it is permitted in organic food processing. 

Conclusion

Argon (E938) is a safe and effective packaging gas used in the food industry to extend the shelf life of products by creating an inert atmosphere that prevents oxidation and microbial growth. Its inert nature ensures that it does not interact with food components, making it a reliable choice for preserving the quality and freshness of various food items.