Nisin
Preservative
Nisin is a natural substance made by certain bacteria that helps stop bad germs from growing in food. It's often used in dairy products, canned foods, and processed meats to keep them fresh and safe to eat for longer.
Source: FDA GRAS list
Nisin is generally recognized as safe for use in food, as it is quickly broken down by digestive enzymes in the human body.
Are food preservatives bad for you? - Eleanor Nelsen
TED-Ed
r/AskReddit
Americans of Reddit, with the FDA and other government bodies scaling back food and safety testing, what can we do as individuals (if anything) to lower our risk of food borne illness?
Nisin: harnessing nature's preservative for the future of food safety and beyond.
Wang X, Kang W, Li J
2025
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Last updated: May 16, 2026