不同采收期白花延龄草根茎中脂肪酸的GC-MS分析

摘要

The composition of fatty acids in the rhizome of T .kamtschaticum pall from different harvest periods was studied by GC‐MS .The results showed that there were 23 kinds of fatty acids from the rhizome of T .kamtschaticum pall were separated and identified .The content of linoleic acid was the highest ,up to 52 .24%‐53 .83% .Other major fatty acids were palmitoleic acid 20 .14%‐21 .79% ,oleic acid 10 .75%‐12 .87% ,α‐linolenic acid 2 .90%‐5 .60% and palmitic acid 4 .04%‐6 .77% .Three samples were rich in unsaturated fatty acid with the contents of 89 .97%‐93 .46% ,and most of the fatty acid content showed a trend of dropping at first and rising later ,with the content of fatty acids in sample three was the highest .%采用气相色谱‐质谱（G C‐M S ）法对不同采收期白花延龄草根茎中的脂肪酸组成进行分析。结果表明，共从白花延龄草根茎中分离鉴定出23种脂肪酸，其中亚油酸的含量最高达52．24％～53．83％，其他主要脂肪酸为棕榈油酸20．14％～21．79％、油酸10．75％～12．87％、α～亚麻酸2．90％～5．60％和棕榈酸4．04％～6．77％，其不饱和脂肪酸含量高达89．97％～93．46％，并且大部分脂肪酸含量呈先降后升趋势，多以样品3的脂肪酸含量最高。