Nisin (Natural Preservative)
A natural antimicrobial produced by bacteria, used mainly in cheese and dairy. Low concern.
Nisin is a natural antimicrobial made by lactic acid bacteria, the same family used to make curd and cheese. It stops spoilage bacteria from growing.
CleanPlate verdict
One of the gentler preservatives. Low concern.
Low concern
CleanPlate rating
Also listed asE234
TypePreservative
RatingLow concern
Rated products with it0
Look for any of these names or codes in the ingredient list.
Related additives
Full index →INS 250Concern
Sodium Nitrite
A curing salt used in processed meats. It prevents botulism but can form nitrosamines, especially when meat is cooked at high heat.
Read more →INS 282Worth watching
Calcium Propionate
The most common mould inhibitor in packaged bread. Generally regarded as safe.
In 11 rated products →INS 202Worth watching
Potassium Sorbate
A widely used preservative against mould and yeast. Low toxicity.
In 7 rated products →