Last reviewed May 2026 · 1 min read
Is Nisin vegan?
Also known as: E234
E-number: E234
Check the Label
Source can be plant or animal.
See all check label ingredients →
It depends — It is produced by the fermentation of bacteria.
01 · The basics
What is Nisin?
A polycyclic antibacterial peptide used as a food preservative to extend shelf life.
02 · The source
Where it comes from
It is produced by the fermentation of bacteria. However, the growth medium often used for this bacteria is milk-based (whey), which makes it a 'Check Label' for strict vegans.
03 · Alternatives
Best vegan alternatives
Potassium sorbate
Check Price on AmazonAffiliate links — VegOmm may earn a commission from qualifying purchases.
Frequently asked
FAQ
Is Nisin vegan?
It is produced by bacteria, but because it is often grown on dairy-based mediums, some vegans avoid it. Check with the manufacturer.
Is it an antibiotic?
Yes, it is a natural antibiotic (bacteriocin), but it is used only in food preservation and not for human medicine.
Commonly found in
More in this category
Other preservative ingredients
E1105 (Lysozyme)
A preservative often used to prevent bacterial growth in cheeses.
Dodecyl Gallate
An antioxidant used to prevent fats and oils from oxidizing and going rancid.
BHT
A synthetic antioxidant used to preserve the freshness, color, and flavor of packaged foods and cosmetics.
Keep exploring
Related ingredients
E422 (Glycerol / Glycerin)
A sweet, syrupy liquid used as a humectant in foods and cosmetics.
E920 (L-Cysteine)
A dough conditioner used in commercial bread baking.
Calcium Carbonate
A common mineral used as a white food coloring, an anti-caking agent, and a calcium supplement.
What's next