Bacillus Subtilis

Bacillus subtilis is a bacterium commonly found in soil and the gastrointestinal tract of animals and humans. It is a Gram-positive, spore-forming bacterium that can survive harsh conditions. For food use, it is typically grown in controlled fermentation processes.

Bacillus subtilis is used as a processing aid in the production of certain foods, particularly fermented products like kombucha. It can contribute to the fermentation process and the development of characteristic flavours and textures. It is not typically added for its properties as a sweetener, emulsifier, or preservative.

Bacillus subtilis is not an authorised food additive in the UK, meaning it is not assigned an E-number. Its use in food is generally considered safe when derived from sources that meet food safety standards. Some strains of Bacillus subtilis are used as probiotics, although regulatory bodies like EFSA have not specifically evaluated all strains for health benefits in the context of food additives. Evidence for specific health benefits is often strain-dependent and requires further research.