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Deactivated Yeast

Safe

Deactivated yeast is a whole-cell ingredient providing protein, B-complex vitamins, and umami flavor compounds. Generally well tolerated outside rare yeast-allergy cases.

Found in

1,177 products

What it is

Heat-killed Saccharomyces cerevisiae yeast cells, no longer biologically active.

Flavor enhancer (umami/savory), source of B vitamins and protein; used as nutritional supplement.

Why it's flagged

contains glutamates (natural umami)
rare yeast allergy

What regulators actually say

"Baker's yeast extract is the food ingredient resulting from concentration of the solubles of mechanically ruptured cells of a selected strain of yeast, Saccharomyces cerevisiae... is generally recognized as safe."

21 CFR 184.1983 - Baker's yeast extract — accessdata.fda.gov

Regulatory status

United States — FDA

GRAS; baker's yeast and yeast extracts listed in 21 CFR 184.1983.

European Union — EFSA

Permitted as food ingredient.

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