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Tannin
Tannin
Also known as: E181
Low concern
GRAS in food at typical use levels; high doses can cause GI upset and reduce iron absorption.
Found in
3 products
E-number
E181
Type
colour, emulsifier, stabiliser, thickener
What it is
Tannic acid (tannin), a polyphenolic compound from plants such as oak galls.
Color stabilizer, clarifying agent (E181); flavor adjunct.
Why it's flagged
- Reduced non-heme iron absorption at high intake
What regulators actually say
"Tannic acid... is generally recognized as safe when used in accordance with good manufacturing practice."
Regulatory status
United States — FDA
GRAS for specific uses (21 CFR 184.1097)
European Union — EFSA
E181 permitted in specific applications
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