从马铃薯块茎中分离并鉴定三半乳糖甘油二酯
The isolation and characterization of trigalactosyl diglyceride from potato tubers.
作者信息
Galliard T
出版信息
Biochem J. 1969 Nov;115(2):335-9. doi: 10.1042/bj1150335.
Abstract
Trigalactosyl diglyceride has been isolated from tubers of potato (Solanum tuberosum) by a combination of chromatographic methods. This galactolipid, which constitutes approximately 1% by weight of the total lipids, was characterized by analysis of the intact lipid and its deacylation product. The fatty acids:glycerol:galactose molar proportions were shown to be close to 2:1:3. Evidence was obtained that suggests that trigalactosyl diglyceride is a higher homologue of mono- and di-galactosyl diglycerides and contains an additional d-galactopyranosyl moiety that is linked alpha-(1-->6) to the terminal galactose unit of digalactosyl diglyceride.
摘要
通过多种色谱方法相结合，从马铃薯（茄属马铃薯）块茎中分离出了三半乳糖甘油二酯。这种半乳糖脂约占总脂质重量的1%，通过对完整脂质及其脱酰基产物的分析对其进行了表征。结果表明，脂肪酸、甘油和半乳糖的摩尔比例接近2:1:3。有证据表明，三半乳糖甘油二酯是单半乳糖甘油二酯和二半乳糖甘油二酯的高级同系物，并且含有一个额外的d-吡喃半乳糖基部分，该部分通过α-(1→6)连接到二半乳糖甘油二酯的末端半乳糖单元上。
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