期刊论文

中文

浙江大学学报(农业与生命科学版)

1008-9209

2010

36

2

212-220

10.3785/j.issn.1008-9209.2010.02.015

Project supported by Agricultural Research Program of Hunan Province, China （No. 2007NK3083）.

本校为第一机构

选取24个茶树品种的茶籽,研碎,用甲醇和氯仿提取其中的脂肪,将提出的脂肪甲基化,用100 m×0.25 mm 的CP-Sil88毛细管柱测定脂类中的脂肪酸组成.结果显示:茶籽的脂肪中主要含有20种脂肪酸,不饱和脂肪酸为主要成分;单不饱和脂肪酸的平均含量为51.06%,其中油酸占单不饱和脂肪酸量的96.4%,多不饱和脂肪酸平均含量为27.86%,主要为亚油酸,占多不饱和脂肪酸量的98.6%;饱和脂肪酸平均含量为20.67%,主要为棕榈酸和硬脂酸,分别占饱和脂肪酸的78.3%和19.3%;此外还含有0.144% 18:1-11t酸,该种脂肪酸在人体内可能是9c,11t- CLA(顺-9,反-11-共轭亚油酸)的前体.说明茶籽油的脂肪酸组成较符合保健食用油标准.

The composition analyses of lipids were conducted with the seeds from 24 varieties of tea plants. The lipids of the tea seeds were extracted from tea seed powder with methanol and chloroform. The methylated lipids were determined by gas chromatography （GC） equipped with 100 m × 0.25 mm capillary column. The results indicated that the lipids were composed of 20 fatty acids （FA） with 79% unsaturated fatty acids （UFA）. The average content of monounsaturated fatty acids （MUFA） in FA was 51.06%, of which 96.4% was oleic acid. The average co...