L-Cysteine
This is what the ingredient is.
L-Cysteine is an amino acid used as a dough conditioner and flavor precursor in food processing.
Here is why it shows up on the label.
Reduces mixing time in bread by relaxing gluten. Used in flavor production for meat-like flavors.
Here is what food agencies say.
The FDA lists it as Generally Recognized as Safe. European food agencies allow it. It is permitted in many countries worldwide.
Here is what research has found.
Natural amino acid in many foods. Sources include human hair, duck feathers, or fermentation. Synthetic versions available.
Here are a few things worth knowing.
Generally safe. Some sources (hair, feathers) may concern vegetarians/vegans. Fermentation-derived available.
Sources
- FDA GRAS List
- EFSA Scientific Opinion
- JECFA Monograph
How to read this page
We publish plain facts about this ingredient so a label is easier to read. This is not medical advice, and it is not a recommendation to buy, avoid, or use anything. For a personal health question, talk with a clinician who knows your history.