Leuconostoc Ferment Filtrate
Leuconostoc-fermented filtrate is generally well tolerated; the producing bacteria are common food fermentation organisms (e.g., in sauerkraut, kimchi). Allergic reactions and contact sensitization have been rarely reported.
What it is
Filtrate from the fermentation of radish or other substrates by Leuconostoc lactic acid bacteria, containing peptides and antimicrobial metabolites.
Natural preservative; used primarily in cosmetics as an antimicrobial alternative to parabens.
Why it's flagged
- rare contact sensitization
- preservative efficacy varies
What regulators actually say
"EFSA maintains the Qualified Presumption of Safety (QPS) list of microorganisms intentionally added to food and feed."
Regulatory status
United States — FDA
Not a recognized food additive name; cosmetic use under FDA cosmetic regulations.
European Union — EFSA
Leuconostoc spp. recognized in QPS list for fermentation use; filtrate not specifically authorized as food additive.
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