温度对嗜热芽孢杆菌和嗜热栖热芽孢杆菌脂肪酸组成的影响。
Effect of temperature on the fatty acid composition of the extreme thermophiles, Bacillus caldolyticus and Bacillus caldotenax.
作者信息
Weerkamp A, Heinen W
出版信息
J Bacteriol. 1972 Jan;109(1):443-6. doi: 10.1128/jb.109.1.443-446.1972.
Abstract
Gas chromatographic analysis of extracts from Bacillus caldolyticus and Bacillus caldotenax grown at 60, 70, or 80 C showed that both contain branched-chain fatty acids as major constituents at all temperatures tested. With increasing temperature, a decrease of i-C15 and an increase of i-C17 fatty acids were observed in both strains, as well as a decrease of i-C16 fatty acids corresponding to an increase of n-C16 fatty acids. The most obvious difference was that the shifts observed with B. caldolyticus occurred mainly upon raising the temperature to 10 C above, and in B. caldotenax upon lowering the temperature to 20 C below, the optimal growth temperature.
摘要
对嗜热解芽孢杆菌和嗜热栖热芽孢杆菌在60、70或80℃下生长的提取物进行气相色谱分析表明，在所有测试温度下，二者均以支链脂肪酸作为主要成分。随着温度升高，在两种菌株中均观察到异-C15脂肪酸减少、异-C17脂肪酸增加，以及对应于正-C16脂肪酸增加的异-C16脂肪酸减少。最明显的差异在于，嗜热解芽孢杆菌中观察到的变化主要发生在温度升至高于最适生长温度10℃时，而嗜热栖热芽孢杆菌中观察到的变化则发生在温度降至低于最适生长温度20℃时。
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