食品科学 ›› 2016, Vol. 37 ›› Issue (20): 141-145.doi: 10.7506/spkx1002-6630-201620023

• 安全检测 • 上一篇    下一篇

基于电子鼻的食用油氧化判别分析

胡国梁,徐立荣,许生陆,于修烛,张 睿   

  1. 1.西北农林科技大学食品科学与工程学院,陕西 杨凌 712100;
    2.温州市市场监督管理局,浙江 温州 325200s
  • 收稿日期:2016-10-27 修回日期:2016-10-27 出版日期:2016-10-25 发布日期:2016-12-01
  • 通讯作者: 于修烛
  • 基金资助:

    中央高校基本科研业务费专项(QN2013057)

Discrimination Analysis of Edible Oil Oxidation Based on Electronic Nose Technique

HU Guoliang, XU Lirong, XU Shenglu, YU Xiuzhu, ZHANG Rui   

  1. 1. College of Food Science and Engineering, Northwest A&F University, Yangling 712100, China;
    2. Market Supervision Administration of Wenzhou, Wenzhou 325200, China
  • Received:2016-10-27 Revised:2016-10-27 Online:2016-10-25 Published:2016-12-01
  • Contact: YU Xiuzhu

摘要:

为实现食用油氧化快速判别分析,以市场上常见的食用油为原料,对其进行氧化处理,根据国标中过氧化值和酸值划分为氧化油与未氧化油并作为模型样品和验证样品,采用电子鼻技术测定食用油气味,同时结合聚类分析(cluster analysis,CA)、主成分分析(principal component analysis,PCA)和线性判别分析(linear discriminantanalysis,LDA)方法对不同氧化程度的食用油进行判别,并建立油脂氧化的快速判别模型。同时将检测判别结果与国标规定进行比较分析,结果表明:3 种方法建立模型判别正确率均为100%,CA、PCA和LDA模型验证的判别正确率分别为95.8%、98.9%和100%,说明基于电子鼻技术的食用油氧化判别检测是可行的。

关键词: 食用油 , 氧化, 电子鼻技术, 判别分析

Abstract:

In order to achieve rapid discrimination analysis of edible oil oxidation, common edible vegetable oils available in
the market were subjected to oxidation treatment and then divided by peroxide value and acid value according to the Chinese
national standard into two groups: unoxidized and oxidized for use as a reference set and a validation set. The qualitative
analysis of edible oils with different oxidation degrees was determined by electronic nose (E-nose) technology combined
with cluster analysis (CA), principal component analysis (PCA), and linear discriminant analysis (LDA). A model that
allowed rapid discrimination of edible oils with different oxidation degrees was built using CA, PCA, and LDA, respectively.
The recognition rates of all calibration models were 100%, and the recognition rates of CA, PCA, and LDA on validation set
were 95.8%, 98.9% and 100%, respectively. The E-nose technique was workable for identifying edible oil oxidation.

Key words: edible oils, oxidation, E-nose technique, discrimination analysis

中图分类号: