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使用气相色谱技术分析了类杆菌属中脆弱类杆菌的代谢产物，发现脆弱类杆菌产生乙酸、丙酸、异丁酸，异戊酸和琥珀酸。与常规培养法比较，气相色谱技术具有速度快、精确度高、标本用量少等特点。
The metabolites of Bacteroides fragilis in Bacteroides were analyzed by gas chromatography. Bacteroides fragilis produced acetic acid, propionic acid, isobutyric acid, isovaleric acid and succinic acid. Compared with the conventional culture method, gas chromatography has the characteristics of high speed, high precision and less sample usage.