My current recommendation when either yeast extract or autolyzed yeast extract is listed as an ingredient in foods NOT labeled gluten-free is to contact the manufacturer and ask whether spent yeast from beer manufacturing is the source.Hereâs whyâ¦.y current recommendation when either yeast extract or autolyzed yeast extract is listed as an ingredient in foods NOT labeled gluten-free is to contact the manufacturer and ask whether spent yeast from beer manufacturing is the source. Hereâs whyâ¦.
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AST (aspartate aminotransferase), or SGOT (serum glutamic-oxaloacetic transaminase) as it is also referred to, is one of the many enzymes (proteins) that reside in the cells of your body and assist in the chemical reactions taking place in your body.