15株雅安红花油茶树茶籽含油率及脂肪酸组成分析

Oil content and fatty acid composition of 15 Camellia polyodonta in ya'an

采用气相色谱-质谱法（GC—MS）对15株雅安红花油茶的脂肪酸组成进行分析，并与其单位冠幅产果量、种子出仁率及干籽含油率三个产量指标进行相关性分析。结果表明：雅安红花油茶单位冠幅产果量在1_3～3kg／m2之间、种子出仁率在65．83％-78．18％之间、干籽含油率在27．94％～32．46％之间；油酸含量70．45％～83．13％、亚油酸含量5.3％～13．37％、软脂酸含量7.33％～15．82％、硬脂酸含量1．64％～4．18％。雅安红花油茶亚油酸平均含量达8．73％，符合世界卫生组织（WHO）规定的保健型营养油脂的标准。相关性分析显示，油酸含量和亚油酸含量呈显著负相关，产量与脂肪酸品质相关性不高，在品种选育时要同时考虑产量和脂肪酸组成两个因素。

The fatty acid of 15 Camellia polyodonta trees which were selected in Ya＇an, Si Chuan was analyzed by GC-MS.And the yield of fruit per crown width,the natality of the seed and the oil rate of dry seed were analyzed with the relevant analysis.The results indicated that：the yield of Camellia polyodonta fruit of Ya＇an ranged from 1.3 to 3kg/m2 per crown width.The kernel rate of seed ranged from 65.83% to 78.18%.The oil rate of dry seed ranged from 2？.94% to 32.46%.The content of oleic ranged from 20.45% to 83.13%.The content of linoleic acid ranged from 5.3% to 13.37%.The content of palmitic acid ranged from 7.33% to 15.82%.The content of stearic acid ranged from 1.64% to 4.]8% ,and the average content of linoleic acid was about 8.73% ,which was accorded with the provision of the healthcare nutritional oil which was set by the WHO. As the relevant analysis, an extremely negative correlation was observed between the contents of the oleic and the linoleic acid,while the correlation between the yield and the quality of the fatty acid was negative,therefore,the yield and the composition of fatty acid should be taken into consideration when selecting breeding.