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银杏叶片磷脂酰甘油脂肪酸分子种组成及其位置分布 被引量:1

COMPOSITION OF MOLECULAR SPECIES AND POSI TIONAL DISTRIBUTION OF FATTY ACID OF PHOSPHATIDYLGLYCEROL FROM GINKGO LEAF
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摘要 用高效液相色谱法和酶解的方法检测了银杏叶片磷脂酰甘油(PG)脂肪酸的分子种组成和位置分布,确定银杏叶片PG主要分子种的脂肪酸组成(sn1/sn2)是18∶3/16∶1(3t),18∶3/16∶0,18∶2/16∶1(3t),18∶2/16∶0,18∶1/16∶1(3t),16∶0/16∶1(3t),18∶1/18∶1,18∶1/16∶0和16∶0/16∶0。银杏叶片PG脂肪酸组成和位置分布的分析结果表明,C18脂肪酸主要位于sn1位,16∶1(3t)只分布于sn2位,16∶0在sn1位和sn2位上均有发现。sn1位上的不饱和度∑u大于sn2位上的∑u。 The composition of molecular species and the positional distribution of fatty acids of phosphatidylglycerol (PG) isolated from Ginkgo leaf were examined and analyzed by high performance liquid chromatography (HPLC) and enzymic hydrolysis. The fatty acid compositions (sn 1/sn 2) of the identified major molecular species were 18∶3/16∶1(3t),18∶3/16∶0,18∶2/16∶1(3t),18∶2/16∶0,18∶1/16∶1(3t),16∶0/16∶1(3t),18∶1/18∶1,18∶1/16∶0 and 16∶0/16∶0. The results showed that C 18 fatty acids were principally localized at the sn 1 position, the component 16∶1 (3t) exclusively occupied the sn 2 position and 16∶0 was found at both the sn 1 position and the sn 2 positon. The degree of unsaturation at the sn 1 postion was higher than that at the sn 2 positon.
出处 《植物学通报》 CAS CSCD 1998年第5期50-55,共6页 Chinese Bulletin of Botany
基金 国家自然科学基金
关键词 银杏叶 磷脂酰甘油 分子种组成 脂肪酸 抗寒性 Ginkgo, Phosphatidylglycerol, Molecular species, Fatty acids, Positional distribution
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