现代食品科技2017，Vol.33Issue(2)：190-196,7.DOI:10.13982/j.mfst.1673-9078.2017.2.029
11种品牌玉米油脂肪酸及异构体的主成分分析
Principal Component Analysis of Fatty Acids and Their Isomers in Eleven Brands of Corn Oil
摘要
Abstract
The composition and content of fatty acids and their isomers in 11 brands of commercial corn oil were investigated.The corn oils were analyzed by gas chromatography (GC) and the differences and correlations among fatty acids were assessed with principal component analysis (PCA).Nineteen types of fatty acids were identified in the 11 corn oil samples,including seven saturated fatty acids,five unsaturated fatty acids,six trans fatty acids (TFAs),and one conjugated linoleic acids (t,t-CLAs),with average content of (14.18,80.32,1.47,and 0.23)×102 g/g,respectively.Among them,the amount of linoleic acid (C18∶2-9c12c) was the highest in corn oils,followed by oleic acid (C18∶1-9c) and palmitic acid (C16∶0).The fatty acid content varied significantly for different corn oil brands (p＜0.05).PCA revealed similarities and differences of fatty acid content among the different brands of corn oil.The analysis also revealed correlations among fatty acids,in which a positive correlation between trans and conjugated fatty acids was identified.The study provides evidence to support the evaluation fatty acid quality in commercial com oil.关键词
玉米油/脂肪酸/异构体/气相色谱/主成分分析Key words
corn oil/fatty acids/isomers/gas chromatography/principal component analysis引用本文复制引用
贺凡,郭芹,顾丰颖,哈益明,宁吉英,高萍萍,王锋..11种品牌玉米油脂肪酸及异构体的主成分分析[J].现代食品科技,2017,33(2):190-196,7.基金项目
国家自然科学基金项目(31271851) （31271851）
北京市自然科学基金项目(6154033) （6154033）
中国博士后基金项目(2014M561105,2015T80158) （2014M561105,2015T80158）
