Comparing E920 - l-cysteine vs E917 - potassium iodate

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Overview

E920 - l-cysteine

L-cysteine (E920) is an amino acid used in food as a dough conditioner and flour treatment agent. It helps make dough easier to handle and is sometimes used as a flavoring aid. You will often see it on labels as “L-cysteine” or “L-cysteine hydrochloride.”

E917 - potassium iodate

Potassium iodate (E917) is a food-grade source of iodine and a strong oxidizing agent. It is mainly used to iodize table salt and, in some places, as a dough improver in bread-making. Many manufacturers now prefer other dough conditioners, but potassium iodate remains common for salt fortification in numerous countries.

Synonyms

E920

l-cysteine

L-cysteine hydrochloride

L-Cysteine

L-2-Amino-3-mercaptopropionic acid

L-Cys

(R)-2-Amino-3-mercaptopropanoic acid

(2R)-2-amino-3-sulfanylpropanoic acid

(2R)-2-amino-3-mercaptopropanoic acid

E917

potassium iodate

Functions

flour treatment agent

Origins

Animal

Microbiological

Synthetic

Products

Found in 666 products

Found in 81 products

Search rank & volume

#2014.2K / mo🇺🇸U.S.

#2671.4K / mo🇺🇸U.S.

Awareness score

×0.91

normal

×2.45

over-aware

Search volume over time

Interest over time for 8 keywords in U.S. during the last 10 years.

Interest over time for 2 keywords in U.S. during the last 10 years.

Popular questions

What is n-acetyl-l-cysteine?
N‑acetyl‑L‑cysteine (NAC) is the acetylated form of L‑cysteine, used mainly as a mucolytic drug and as a precursor to glutathione; it is related to but not the same as the food additive E920 (L‑cysteine).
What is l-cysteine made of?
L‑cysteine is a sulfur‑containing amino acid (C3H7NO2S) with a thiol (-SH) group. Commercially, it’s obtained by hydrolyzing keratin sources (e.g., feathers/hair) or produced via microbial fermentation or synthesis.
Is cysteine l or d?
In foods and proteins it is the L‑form (E920 is L‑cysteine); the D‑form exists but is not typical in food use.
N-acetyl-l-cysteine para que sirve?
Es un derivado acetilado de la L‑cisteína que actúa como mucolítico y precursor del glutatión; se usa como fármaco para la sobredosis de paracetamol y en suplementos con efectos antioxidantes. No es el aditivo alimentario E920.
What does n-acetyl-l-cysteine do?
It thins and loosens mucus, replenishes glutathione, and provides antioxidant activity; medically it’s used to treat acetaminophen (paracetamol) overdose. It is not typically used as a food additive like E920.