Flour Treatment Agents — Complete E-Number Guide

Flour Treatment Agents are food additives (E900–E929) that improve the baking quality and handling of flour and dough. They are found in many everyday foods including commercial bread, rolls, pizza bases and baked goods. This guide covers every flour treatment agent E-number with its safety, vegan and halal status at a glance.

E-NumberNameSafetyVeganHalal
E920 L-Cysteine Safe Uncertain Doubtful
E927b Carbamide Safe Yes Halal

What do flour treatment agents do?

Additives in the flour treatment agents group improve the baking quality and handling of flour and dough. Without them, many everyday products would spoil faster, separate, lose texture or look unappetising — which is why they appear in so many ingredients lists. Every additive in this table has been through EFSA's authorisation process, but as the safety column shows, "authorised" doesn't always mean "concern-free": some carry conditions, warnings or ongoing debates, and each entry links to a full breakdown.

Checking labels for flour treatment agents

On UK and EU labels these additives appear with their function and E-number or name — for example "flour treatment agent: E920". Tap any E-number in the table for its complete profile: what it is, where it's found, whether it's safe, and its vegan, vegetarian, halal and palm-oil status.

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Additive data sourced from Open Food Facts (ODbL licence) and the European Food Safety Authority (EFSA).

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