几类市售坚果产品中油脂的脂肪酸分析  

Composition of fatty acids of several selected commercial nut products

作　　者：陈逸鹏[1] 郑凯航[1] 何计国[1] 梁建芬 

机构地区：[1]植物源功能食品北京市重点实验室,中国农业大学食品科学与营养工程学院,北京100083

出　　处：《食品科技》2015年第1期191-195,共5页Food Science and Technology

基　　金：北京市大学生科技创新项目(2013bj18);中央高校基本科研业务费专项

摘　　要：利用索氏提取和气相色谱的研究方法,对市售几类主要坚果产品的油脂脂肪酸组成进行了分析和评价。结果表明:(1)花生、核桃、葵花籽、西瓜子、南瓜子、巴旦木、开心果和腰果8类坚果中的脂肪酸主要为油酸、亚油酸和棕榈酸,其不饱和脂肪酸含量分别为78%、91%、88%、81%、79%、92%、87%和80%;(2)加工方法对坚果产品的脂肪酸组成有一定的影响;(3)坚果油脂中的亚油酸和α-亚麻酸含量比较高,其中核桃、葵花籽、西瓜子和南瓜子的亚油酸含量都在50%以上,同时,核桃的α-亚麻酸含量还相对较高,这8种坚果都是很好的补充膳食多不饱和脂肪酸的食品。Composition of fatty acids in oil of 8 main categories of commercial nut products was analyzed and evaluated by Soxhlet extraction method and GC method. The results showed that：（1）the main fatty acids of peanuts, walnuts, sunflower seeds, watermelon seeds, pumpkin seeds, almonds, pistachios and cashews were oleic acid, linoleic acid and palmitic acid, and the unsaturated fatty acid contents were 78%, 91%, 88%, 81%, 87%, 92%, 87% and 80% respectively for 8 kinds of nuts;（2）Processing technology also affected the contents and composition of fatty acids of nuts products;（3）Alpha-linolenic acid and linoleic acid content in nut oils are relatively high. Walnut, sunflower seeds, watermelon seeds and pumpkin seeds contain more than 50% of linoleic acid. The alpha-linolenic acid content of walnut is relatively high. Nuts are good supplementary food for polyunsaturated fatty acids intake.

关 键 词：坚果 脂肪酸 不饱和脂肪酸 加工方法 

分 类 号：TS255.6[轻工技术与工程—农产品加工及贮藏工程]