作　　者： ; ; ; (周克福）; (傅财贤）;

机构地区： 青岛农业大学

出　　处： 《青岛农业大学学报（自然科学版）》 2012年第2期101-105,共5页

摘　　要： 以龙井长叶、福鼎大白、鸠坑种及平阳特早的一年生茶苗为材料,利用气相色谱法,分析茶树叶片脂肪酸组分,研究自然降温过程中茶树叶片不同脂肪酸组分及质膜透性的变化,为茶树品种抗寒机理研究提供参考。结果表明,在自然降温条件下,各茶树品种均表现出棕榈酸、硬脂酸及油酸含量降低,棕榈油酸、亚油酸、亚麻酸含量升高;不饱和脂肪酸(USFA)含量及脂肪酸不饱和指数(IUFA)随温度降低显著增加。USFA及IUFA的变化趋势可在一定程度上反应茶树品种的抗寒性。 Using leaves from annual branches of four tea varieties（ Camellia sinensis ） , Longjing Changye, Fuding Dabai, Jiukeng and Pingyang Tezao, fatty acid components in tea leaves was analyzed by gas chromatography. Changes of relative cell membrane permeability and membrane fatty acid composition under low temperature were studied. The results showed that the content of palmitic acid, stearic acid and oleic acid decreased, and the content of palmitoleic acid, linoleic acid and linolenic acid increased as temperature fell. The ratio of unsaturated fatty acid （USFA） and the index of unsaturated fatty acid （IUFA） increased under low temperature. The change tendency of the USFA and the IUFA reflects the cold resistance in different tea varieties in a certain extent.

关 键 词： 茶树 脂肪酸 脂肪酸不饱和指数 自然降温

领　　域： [生物学]