摘要
测定了12种植物油(共计196个样品)的脂肪酸组成和含量,探讨了利用植物油脂肪酸的指标对不同种类的植物油进行分类和判别的可能性。利用SPSS 22.0统计软件进行主成分分析、系统聚类、K-平均值聚类和判别分析。结果表明:12种植物油的主要共有组成为油酸(15.635%~66.569%)和亚油酸(10.521%~58.227%),其中棉籽油(16.285%)中单不饱和脂肪酸含量最低,橄榄油(67.628%)中单不饱和脂肪酸含量最高;橄榄油(11.284%)中多不饱和脂肪酸含量最低,核桃油(67.167%)中多不饱和脂肪酸含量最高;12种植物油中不饱和度最小为棉籽油3.235,最大为低芥酸菜籽油14.672。主成分分析降维得到5个主成分,利用主成分分析数据,依次进行聚类分析和判别分析,系统聚类和K-平均值聚类结果一致,可对12种植物油聚类区别,通过判别分析建立了3个典则判别函数,对不同植物油的分类和判别的效果良好。
The fatty acid composition and content of 12 kinds of vegetable oils were measured,and the possibility of using the index of vegetable oil fatty acids to classify and distinguish different kinds of vegetable oils was explored.The composition and content of 12 kinds of vegetable oil fatty acids were determined by gas chromatography,and SPSS 22.0 statistical software was used for principal component analysis,hierarchical clustering,K-means clustering and discriminant analysis.The results indicated that the main common components of 12 kinds of vegetable oils were oleic acid(15.635%~66.569%)and linoleic acid(10.521%~58.227%).Among them,cottonseed oil(16.285%)had the lowest monounsaturated fatty acid content;olive oil(67.628%)had the highest content;olive oil(11.284%)had the lowest polyunsaturated fatty acid content,and walnut oil(67.167%)had the highest content;among the 12 vegetable oils,the least unsaturation was cottonseed oil 3.235 and the largest was canola oil 14.672.Principal component analysis dimensionality reduction obtained 5 principal components.Using principal component analysis data,cluster analysis and discriminant analysis were performed in sequence.The results of systematic clustering and K-mean clustering were consistent,and 12 kinds of vegetable oils could be clustered and distinguished.Analysis and establishment of 3 canonical discriminant functions,the classification and discrimination of different vegetable oils were effective.
作者
雷春妮
王波
解迎双
孙苗苗
齐安安
Lei Chunni;Wang Bo;Jie Yinshuang;Sun Miaomiao;Qi An an(Lanzhou Customs 1,Lanzhou 730010;Shandong University 2,Qingdao 266237)
出处
《中国粮油学报》
CAS
CSCD
北大核心
2022年第6期170-176,共7页
Journal of the Chinese Cereals and Oils Association
基金
甘肃省重点研发项目(17YF1NK088)。
关键词
植物油
主成分分析
聚类分析
判别分析
vegetable oil
principal component analysis
cluster analysis
discriminant analysis
