nisin

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ni·sin

(nī'sin),
A polypeptide antibiotic produced by Streptococcus lactis; active against certain streptococci, Mycobacterium tuberculosis, Clostridium difficile, and other bacteria.

nisin

(nī′sĭn)
n.
A bacteriocin produced by the bacterium Lactococcus lactis and used as a preservative in dairy products and other foods and in cosmetics.

ni·sin

(nī'sin)
A polypeptide antibiotic produced by Streptococcus lactis; active against some streptococci, Mycobacterium tuberculosis, Clostridium difficile, and other bacteria.

nisin

an antibiotic substance isolated from cultures of lactic acid producing streptococci and reputed to have antibacterial activity against gram-positive bacteria.