摘要
在鲜榨橙汁中分别添加不同比例的橙汁饮料,采用电子舌检测技术对其口味进行识别,对传感器所获得的响应信号进行主成分分析(PCA)、辨别因子分析(DFA)和偏最小二乘回归分析(PLS)。与PCA相比,DFA对样品的区分效果更好,随着掺假比例的增加,样品分布呈现一定的规律性;PLS分析法显示:橙汁饮料的不同掺入比例与电子舌响应信号有较好的相关性,相关系数为0.963 8;PLS模型预测误差值在1.85%~2.20%。证明电子舌技术能够有效的用于鲜榨橙汁掺假的鉴别。
The recognition of adulteration in fresh orange juice was performed by electronic tongue system.The raw data were analyzed by using principal component analysis(PCA),discriminant fact analysis(DFA)and partial least-squares analysis(PLS).DFA was more competent than PCA in distinguishing effect.It appeared regularity with the increasing proportion of adulterated samples.It had a high correlation between electronic tongue sensors' response signals and the adulteration ratio of fresh orange juice,the correlation coefficient was 0.963 8,the prediction error of established PLS model ranged from 1.85%to 2.20%.It proved that electronic tongue could be applied in adulteration recognition of fresh orange juice.
出处
《食品与机械》
CSCD
北大核心
2015年第6期92-94,207,共4页
Food and Machinery
基金
烹饪科学四川省高校重点实验室科研项目(编号:13LB07)
关键词
鲜榨橙汁
电子舌
掺假
区分
fresh orange juice
adulteration
electronic tongue
classification