butyrin
酪脂
bu·tyr·in /ˈbjutərən/ 名詞
丁酸甘油酯,酪脂
Bu·ty·rin n. Physiol. Chem. A butyrate of glycerin; a fat contained in small quantity in milk, which helps to give to butter its peculiar flavor.
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butyrin
n : any of three glycerides of butyric acid