Is E920 Vegan?
Confidence: 60% · Low
May Be Vegan
Check source for L-Cysteine
May be vegan, but sourcing or formulation creates uncertainty.
Detailed answer
Not always vegan. E920 is L-cysteine, a dough conditioner often derived from duck feathers or hair, though synthetic versions exist.
Is E920 vegan?
L-cysteine strengthens dough and extends shelf life in commercial bread. The most common industrial source is poultry feathers. Vegan bakeries use alternative conditioners or synthetic L-cysteine.
Frequently asked questions
- Is E920 in bread vegan?
- Often not, unless the bread is certified vegan or the manufacturer confirms a synthetic source.
Evidence
Last verified August 2026
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Checked by Is This Vegan? · August 2026