Sterols and fatty acids in foams from Antarctic lakes of the Dry Valleys in south Victoria Land
Sterols and fatty acids in foams from Antarctic lakes of the Dry Valleys in south Victoria Land
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维多利亚州南部干谷南极湖泊泡沫中的甾醇和脂肪酸
DOI：
10.2343/geochemj.19.91
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发表时间：
1985
期刊：
影响因子：
--
通讯作者：
T. Hanya
中科院分区：
文献类型：
--
作者：
G. Matsumoto;T. Torii;T. Hanya
对南极洲维多利亚地南部干旱河谷赖特河谷湖泊泡沫样品中的硬脂酸和脂肪酸进行了研究。胆甾烷、胆甾-5，22-二烯-3 β-醇、胆甾-5-烯-3 β-醇、24-甲基胆甾-5，22-二烯-3 β-醇、24-甲基胆甾-5-烯-3 β-醇、24-乙基胆甾-5，22-二烯-3 β-醇、24-乙基胆甾-5-烯-3 β-醇和5α-胆甾烷-3 β-醇，以及C10至C28的脂肪酸，包括正链烷酸，在泡沫样品中发现支链（异和反异）和不饱和酸。主要甾醇为胆甾-5-烯-3 β-醇或24-乙基胆甾-5-烯-3 β-醇。泡沫样品的甾醇和脂肪酸组成与底栖生物（主要是蓝藻）的甾醇和脂肪酸组成相似。甾醇和脂肪酸的来源最有可能是蓝藻。此外，这些脂质成分在泡沫中相当集中。
Sterols and fatty acids were studied for foam samples from lakes of Wright Valley in the Dry Valleys of south Victoria Land, Antarctica. Sterols, cholesta-5, 22-dien-3β-ol, cholest-5-en-3β-ol, 24-methylcholesta-5, 22-dien-3β-ol, 24-methylcholest-5-en-3β-ol, 24-ethylchlesta-5, 22-dien-3β-ol, 24-ethylcholest-5-en-3β-ol and 5α-cholestan-3β-ol, and fatty acids ranging from C10 to C28, including n-alkanoic, branched (iso and anteiso) and unsaturated acids were found in the foam samples. The dominant sterol was cholest5-en-3β-ol or 24-ethylcholest-5-en-3β-ol. The sterol and fatty acid compositions of the foam samples are similar to those of epibenthic organisms (mainly cyanobacteria). The sources of the sterols and fatty acids are most likely cyanobacteria. In addition, these lipid components were concentrated considerably in the foams.