Nisin is a antibacterial peptide that is used as a highly effective natural preservative. It is one of the few examples of a broad-spectrum bacteriocin which is effective against many Gram-positive organisms. 

Nisin is soluble in water and can already be effective at addition levels of parts-per-billion. 

Due to its highly effective natural preservative properties, Nisin is used in diverse food applications. Applications range from cheese manufacturing, to meat processing, to beverages. 

CAS Number : 1414-45-5

Chemical formula
Molar mass3354.07 g/mol 
Appearanceoff-white powder