Nisin (Nisin, E234) is a natural antibiotic produced by lactic acid bacteria of the species Streptococcus lactis.
Chemical formula C143H230N42O37S7.
Delays the growth and development of staphylococci, streptococci and other microbes. It is ineffective against yeast, mold, and Gram-negative bacteria. It has the ability to reduce the resistance of spores of heat-resistant bacteria to heat.
It is allowed in the production of processed and other cheeses, dairy products, canned vegetables and fruit.