摘要
选取广西油茶重点产区河池、百色和梧州的主要油茶品种普通油茶、岑溪软枝油茶及大果红花油茶的种子为原料,石油醚为溶剂提取油茶种子的油脂及测定含油率,利用气相色谱-质谱联用技术对不同油茶籽油试样的脂肪酸成分进行分析鉴定。结果表明:4个不同产地不同品种的油茶种子出仁率为53.29%～68.91%;干籽含油率为47.05%～59.51%;GC-MS共鉴定出14种脂肪酸,单不饱和酸含量为72.91%～80.11%,其中河池巴马软枝油茶籽油的单不饱和酸含量最高,为80.11%,主要成分是油酸;多不饱和酸含量为5.85%～9.14%,其中梧州岑溪软枝油茶籽油的多不饱和酸含量最高,为9.14%,主要成分是亚油酸;饱和脂肪酸含量为13.62%～17.95%,主要成分为棕榈酸和硬脂酸;同时,广西油茶籽油中含有少量的9,10-环氧-十八碳烷酸尚未见报道。
Petroleum ether extraction was used to determine the oil contents and fatty acid composition of four samples（consisting of 3 cultivars：Camellia oleifera Abel from Baise,Camellia semiserrata Chi from Wuzhou and two samples of Camellia oleifera Ruanzhi from Hechi and Wuzhou,respectively）of Camellia oleifera seeds from the primary production areas of Hechi, Baise and Wuzhou in Guangxi.The determination of fatty acid composition was achieved using GC-MS.The results showed that kernel percentages and oil contents（expressed on the basis of seed dry weight）of four samples of Camellia oleifera seeds ranged from 53.29%to 68.91%and from 47.05%to 59.51%,respectively.Totally 14 fatty acids were identified in them by GCMS,including monounsaturated fatty acids（MUFAs）,polyunsaturated fatty acids（PUFAs）saturated and fatty acids（SFAs） accounting for 72.91%to 80.11%,5.85%to 9.14%and 13.62%to 17.95%of the total fatty acids,respectively.Camellia oleifera Ruanzhi seeds from Hechi had the highest content of MUFAs（80.11%）,and the predominant MUFA was oleic acid.The sample having the highest content of PUFAs was Camellia oleifera Ruanzhi seeds from Wuzhou,which contained mostly linoleic acid. The SFAs found in four samples of Camellia oleifera seeds were mainly made up of palmitic acid and stearic acid.Moreover,a small amount of 9,10-epoxystearic acid was first found in Camellia oleifera seeds from Guanxi.
出处
《食品科学》
EI
CAS
CSCD
北大核心
2011年第8期172-176,共5页
Food Science
基金
国家自然科学基金面上项目(20976031)国家自然科学基金地区项目(31060102)
广西自然科学基金项目(2010GXNSFA013042)
梧州市科技计划项目(200901011)
广西大学科研基金项目(081020)
