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利用细胞脂肪酸和中性单糖的气相色谱分析鉴定乳酸杆菌。

Gas chromatography analysis of cellular fatty acids and neutral monosaccharides in the identification of lactobacilli.

作者信息

Rizzo A F, Korkeala H, Mononen I

机构信息

Department of Chemistry, National Veterinary Institute, Helsinki, Finland.

出版信息

Appl Environ Microbiol. 1987 Dec;53(12):2883-8. doi: 10.1128/aem.53.12.2883-2888.1987.

Abstract

Cellular fatty acids and monosaccharides in a group of 14 lactobacilli were analyzed by gas chromatography and the identity of the components was confirmed by gas chromatography-mass spectrometry. From the same bacterial sample, both monosaccharides and fatty acids were liberated by methanolysis, and in certain experiments, fatty acids alone were released by basic hydrolysis. The results indicate that basic hydrolysis gave more comprehensive information about the fatty acids, but the analysis of monosaccharides was found to be much more useful in distinguishing between different species of lactobacilli. The method described allowed differentiation of 11 of 14 Lactobacillus species, and even single colonies isolated from agar plates could be used for analysis without subculturing.

摘要

通过气相色谱法分析了一组14株乳酸杆菌中的细胞脂肪酸和单糖,并通过气相色谱-质谱联用仪确认了各成分的身份。从同一细菌样本中,单糖和脂肪酸都通过甲醇解作用释放出来,在某些实验中,仅脂肪酸通过碱性水解释放出来。结果表明,碱性水解能提供有关脂肪酸更全面的信息,但发现单糖分析在区分不同种类的乳酸杆菌方面更有用。所描述的方法能够区分14种乳酸杆菌中的11种,甚至从琼脂平板上分离出的单个菌落无需传代培养即可用于分析。

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