faex extracts

Faex extracts, commonly known as yeast extract, are complex mixtures obtained by processing baker's or brewer's yeast cells to release their soluble components. These extracts appear as light to dark pastes or powders and are recognized for their pronounced yeasty aroma and rich umami flavor profile. Synonyms include yeast extracts, pseudo collagen, and various commercial brands like Maxarome and Hithion YH. They belong to the class of flavoring agents derived from biological fermentation. Faex extracts are widely utilized in flavor formulations and cosmetic applications such as skin conditioning. The chemical composition is complex, consisting primarily of amino acids, peptides, nucleotides, vitamins, and minerals. See PubChem entry for yeast extract for detailed chemical information. These extracts are typically sourced by autolysis or enzymatic hydrolysis of Saccharomyces cerevisiae cells.

Faex extracts occur naturally within the cell walls and cytoplasm of yeast microorganisms, primarily Saccharomyces cerevisiae. In commercial production, they are obtained by disrupting these yeast cells to solubilize intracellular components. Their strong savory, brothy, and slightly sweet flavor properties make them valuable flavor enhancers in food products, providing umami and meaty nuances. In cosmetics, these extracts are utilized for skin conditioning effects due to their nutrient content. Regulatory frameworks such as FEMA (US) oversee the use of yeast extracts as flavor agents, ensuring appropriate usage levels for safety. The sensory qualities of faex extracts align with their widespread adoption in culinary and cosmetic formula development.

Faex extracts typically present as viscous pastes or dry powders with color ranging from light to dark amber, depending on processing conditions. Their composition includes a mixture of amino acids, small peptides, nucleotides, carbohydrates, and minerals, which collectively contribute to their strong umami flavor and characteristic yeasty odor. The water solubility and chemical complexity influence their stability and compatibility in formulations. Temperature and pH can affect the sensory profile and solubility of these extracts in various matrices. Their molecular constituents interact within mixtures to provide savory, brothy, and meaty notes essential for flavor enhancement. Their physicochemical properties are critical for optimizing both food and cosmetic product performances.

Pubchem (sid):

135278273

FDA Substances Added to Food (formerly EAFUS):	View
HMDB (The Human Metabolome Database):	HMDB32173
FooDB:	FDB008988
Export Tariff Code:	1302.19.0000
FDA Listing of Food Additive Status:	View
Wikipedia:	View

Safety information

Hazards identification
Classification of the substance or mixture
GHS Classification in accordance with 29 CFR 1910 (OSHA HCS)
None found.
GHS Label elements, including precautionary statements
Pictogram
Hazard statement(s)
None found.
Precautionary statement(s)
None found.
Oral/Parenteral Toxicity:
intraperitoneal-mouse LD50 > 8000 mg/kg BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD BEHAVIORAL: SOMNOLENCE (GENERAL DEPRESSED ACTIVITY) LUNGS, THORAX, OR RESPIRATION: DYSPNEA Toho Igakkai Zasshi. Journal of Medical Society of Toho University. Vol. 23, Pg. 295, 1976. intraperitoneal-rat LD50 4500 mg/kg BEHAVIORAL: CONVULSIONS OR EFFECT ON SEIZURE THRESHOLD SENSE ORGANS AND SPECIAL SENSES: MYDRIASIS (PUPILLARY DILATION): EYE LUNGS, THORAX, OR RESPIRATION: DYSPNEA Toho Igakkai Zasshi. Journal of Medical Society of Toho University. Vol. 23, Pg. 295, 1976.
Dermal Toxicity:
Not determined
Inhalation Toxicity:
Not determined

Safety in use information

Category:
cosmetic and flavor agents
Recommendation for faex extracts usage levels up to:
	not for fragrance use.

Safety references

ClinicalTrials.gov:search

AIDS Citations:Search

Cancer Citations:Search

Toxicology Citations:Search

EPA Substance Registry Services (TSCA):8013-01-2

EPA ACToR:Toxicology Data

EPA Substance Registry Services (SRS):Registry

National Institute of Allergy and Infectious Diseases:Data

Chemidplus:0008013012