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马拉色菌属特有的γ-内酯气味产生

Characteristic gamma-lactone odor production of the genus Pityrosporum.

作者信息

Labows J N, McGinley K J, Leyden J J, Webster G F

出版信息

Appl Environ Microbiol. 1979 Sep;38(3):412-5. doi: 10.1128/aem.38.3.412-415.1979.

Abstract

Mass spectrometric-gas chromatographic analysis of culture headspaces revealed that members of the genous Pityrosporum produce volatile gamma-lactones during growth on lipid-containing media. Representative members of other yeast genera found on humans failed to produce these compounds. Addition of lecithin, oleic acids, triolein, or human sebum to the culture media stimulated gamma-lactone production by Pityrosporum species. All yeasts tested produced isopentanol and phenylethanol. Production of gamma-lactones may serve as a valuable characteristic in the identification of organisms of the genus Pityrosporum.

摘要

对培养物顶空进行质谱-气相色谱分析表明,在含脂质培养基上生长期间,马拉色菌属的成员会产生挥发性γ-内酯。在人类身上发现的其他酵母属的代表性成员未能产生这些化合物。向培养基中添加卵磷脂、油酸、三油酸甘油酯或人皮脂可刺激马拉色菌属产生γ-内酯。所有测试的酵母都产生异戊醇和苯乙醇。γ-内酯的产生可能是鉴定马拉色菌属微生物的一个有价值的特征。

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