E-code guide
E920L-Cysteine
DoubtfulFlour-treatment agent
E920

L-Cysteine

Flour-treatment agent used to improve dough handling in bread and bakery products

SANHA and MUIS all classify this as doubtful.
Based on 2 cited authorities. Confidence: low.

What authorities say

2 authorities on record
2say Doubtful

Why this verdict

E920 is L-cysteine, added to bread dough as a flour-treatment agent. SANHA classifies E920 as Mushbooh and lists the source as animal or synthetic. MUIS marks E920 as syubhah, noting it is manufactured from animal hair and chicken feathers. Because the source is rarely declared on the label, E920 is doubtful by default.

Common questions

Is E920 halal?

L-Cysteine (E920) is classified doubtful. SANHA and MUIS classify it as doubtful.

Based on 2 cited authorities. Verdict may be revised as more positions are added.
Last reviewed by the HalalHQ research team in June 2026.