Food Safety Substance

L-Cystine

L-Cystine is a food additive with no EU additive status row found in the EU, FDA EAFUS in the US, and data from 3 regulatory sources.

CAS 56-89-3 Thin evidence set
FDA
FDA EAFUS
ADI / TDI
No ADI/TDI row found
Codex
0 row(s)
SOURCE D1 identity resolution e number aliases | Food Additives | dsstox identifiers | 3 matched regulatory source group(s)

Substance Identity

Resolved identifiers used to render this food-safety record.

Substance name
L-Cystine
CAS
56-89-3
DTXSID
DTXSID2046418
PubChem CID
67678
Evidence tier
Thin evidence set (4)
SOURCE ingredients ghs classifications

Cross-Reference to Cosmetics / Chemicals / Pharma

Same-CAS public rows from adjacent Roots verticals where available.

CosmeticsCystineEU status: permitted Industrial / GHSWarningEuropean Chemicals Agency (ECHA)
SOURCE FAQPage JSON-LD public food renderer rows

Frequently Asked Questions

Food-use, safety, ADI, and cross-vertical answers mirrored into FAQPage JSON-LD.

What is L-Cystine used for in food?

L-Cystine appears in food-use rows as: DOUGH STRENGTHENER, FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, NUTRIENT SUPPLEMENT.

Is L-Cystine safe?

This page does not assign a standalone safety verdict; it renders public regulatory evidence. US/FDA evidence: FDA EAFUS.

What is the ADI for L-Cystine?

No ADI row was found for L-Cystine in the rendered EFSA, food_substances, food_additives, or JECFA tables.

Is L-Cystine also used in cosmetics?

L-Cystine has a same-CAS cosmetics cross-reference: Cystine, EU status permitted.