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单词 propionic acid
释义

propionic acid

/ˌprəʊpɪˈɒnɪk /
noun [mass noun] Chemistry
A colourless pungent liquid organic acid produced in some forms of fermentation and used for inhibiting the growth of mould in bread.
  • Alternative name: propanoic acid; chemical formula: C2H5COOH.
Two other simple carboxylic acids are propionic acid and butyric acid....
  • Each population cage contained two standard 240-ml food bottles, each containing 50 ml of standard fly medium containing sucrose, corn meal, yeast, agar, benzoic acid, methyl paraben, and propionic acid.
  • Such breads are almost always chock full of preservatives like sorbic acid and propionic acid, which help to ward off mold.

Origin

Mid 19th century: propionic from French propionique, from Greek pro 'before' + piōn 'fat', it being the first member of the fatty acid series to form fats.

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更新时间:2025/2/23 6:35:18