云南大叶种茶树籽油的特征指标与脂肪酸组成研究  

Study of Characteristic Indexes and Fatty Acid Composition in Big-leaf Tea Plant(Camellia sinensis var.assamica)Seed Oils from Yunnan Province

作　　者：吴万富 吕世懂[1,2,3] 杨学芳 李悦[5] 张继光[1,2,3] WU Wanfu;LYU Shidong;YANG Xuefang;LI Yue;ZHANG Jiguang(Kunming Grain and Oil and Feed Product Quality Inspection Center,Kunming 650118,China;Yunnan Province Grain and Oil Products Quality Supervision and Inspection Station,Kunming 650118,China;Yunnan Kunming National Grain Quality Testing Station,Kunming 650118,China;Scientific and technological achievements incubation center,Kunming Medical University,Kunming 650500,China;Hebei Normal University,Shijiazhuang 050024,China)

机构地区：[1]昆明市粮油饲料产品质量检验中心,云南昆明650118 [2]云南省粮油产品质量监督检验站,云南昆明650118 [3]云南昆明国家粮食质量监测站,云南昆明650118 [4]昆明医科大学科技成果孵化中心,云南昆明650500 [5]河北师范大学,河北石家庄050024

出　　处：《茶叶科学》2021年第4期463-470,共8页Journal of Tea Science

摘　　要：采用化学滴定及气相色谱等手段,对产自云南普洱的5个大叶种茶树籽油及8个常见食用植物油的特征指标(折光指数、相对密度、碘值、皂化值)和脂肪酸组成进行了对比研究。结果表明,5个大叶种茶树籽油折光指数为1.4629~1.4634;相对密度为0.9148~0.9167;碘值为859~903 g·kg^(-1);皂化值为189.0~193.2 g·kg^(-1);棕榈酸含量为14.29%~15.75%;油酸含量为57.83%~61.41%;亚油酸含量为18.81%~23.11%;饱和脂肪酸含量为17.6%~19.8%;不饱和脂肪酸含量为80.2%~82.4%。大叶种茶树籽油的脂肪酸组成与油茶籽油、橄榄油较为接近,饱和脂肪酸、单不饱和脂肪酸、多不饱和脂肪酸的比例接近1∶3∶1,脂肪酸的组成比例较为均衡,极具研发及推广价值。The characteristic parameters(refractive index,relative density,iodine value,saponification value)and fatty acid composition in five big-leaf tea plant(Camellia sinensis var.assamica)seed oils from Yunnan Province and other eight common edible vegetable oils were analyzed by chemical titration and gas chromatography(GC).The results show that the refractive index of the five big-leaf tea plant(Camellia sinensis var.assamica)seed oils ranged from 1.4629-1.4634.The relative density ranged from 0.9148~0.9167,iodine value was 859-903 g·kg^(-1),saponification value was 189.0-193.2 g·kg^(-1) palmitic acid contents were 14.29%-15.75%,oleic acid contents were 57.83%-61.41%,linoleic acid contents were 18.81%-23.11%.The saturated fatty acid contents ranged from 17.6%to 19.8%.Unsaturated fatty acid contents were 80.2%-82.4%.Overall,the fatty acid composition of big-leaf tea plant(Camellia sinensis var.assamica)seed oil was similar as the Camellia oleifera seed oil and olive oil.The ratio of saturated fatty acid,monounsaturated fatty acid and polyunsaturated fatty acid was about 1∶3∶1.Big-leaf tea plant(Camellia sinensis var.assamica)seed oil has the potential value for research,development and promotion.

关 键 词：大叶种茶树籽油 气相色谱 特征指标 脂肪酸组成 

分 类 号：S571.1[农业科学—茶叶生产加工] TS207.3[农业科学—作物学]