Is Nisin (E234) Halal?

MUIS lists E234 (Nisin) as doubtful (mashbooh), which means the source cannot be confirmed from the E-number alone — not that it is haram. It is produced by fermentation, and the fermentation medium, nutrients and processing aids vary by manufacturer and can include animal-derived ingredients. The additive itself is not haram; its status depends on how the producer makes it. The reliable check is a recognised halal certification logo on the finished product, or a manufacturer statement of the source.

Nisin is a polypeptide antimicrobial preservative produced by the bacterium Lactococcus lactis (formerly Streptococcus lactis), typically grown on a milk-based substrate. It is effective against gram-positive bacteria including Listeria.

• processed cheese
• canned foods
• dairy desserts
• cured meats

• Look for a recognised halal certification logo (MUIS, JAKIM, MUI, HMC or similar) on the packaging — certified products have had the source of this additive verified.
• Check whether the label states the origin, for example 'vegetable origin', 'plant-based' or 'soy'.
• If there is no certification and the origin is not stated, contact the manufacturer or choose a product with a halal alternative.

natamycin (E235), potassium sorbate (E202), sodium benzoate (E211)

E234 (Nisin) is doubtful for Muslims according to the MUIS food additive listing. Nisin is a polypeptide antimicrobial preservative produced by the bacterium Lactococcus lactis (formerly Streptococcus lactis), typically grown on a milk-based substrate.

Nisin is a polypeptide antimicrobial preservative produced by the bacterium Lactococcus lactis (formerly Streptococcus lactis), typically grown on a milk-based substrate. It is effective against gram-positive bacteria including Listeria.

E234 is commonly found in processed cheese, canned foods, dairy desserts, and cured meats.