butyric acid

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butyric acid A short‐chain saturated fatty acid (C4 : 0). It occurs as the triacylglycerol in 5–6% of butter fat, and in small amounts in other fats and oils. Also formed by intestinal bacterial fermentation of resistant starch, when it is possibly protective against the development of colo‐rectal cancer.

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butyric (butyric acid, found in rancid butter) XIX. f. L. būtȳrum BUTTER + -IC.