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电子鼻检测冷冻罗非鱼肉的研究
引用本文:李来好,王国超,郝淑贤,杨贤庆,岑剑伟,黄卉,魏涯. 电子鼻检测冷冻罗非鱼肉的研究[J]. 南方水产, 2012, 8(4): 1-6
作者姓名:李来好  王国超  郝淑贤  杨贤庆  岑剑伟  黄卉  魏涯
作者单位:1. 中国水产科学研究院南海水产研究所,农业部水产品加工重点实验室,国家水产品加工技术研发中心,广东广州510300
2. 中国水产科学研究院南海水产研究所,农业部水产品加工重点实验室,国家水产品加工技术研发中心,广东广州5103002;中国海洋大学食品科学与工程学院,山东青岛266003
基金项目:国家现代农业产业技术体系,广东省科技计划项目,国家农业科技成果转化资金项目,广东省海洋渔业科技推广项目,中央级公益性科研院所基本科研业务费专项资金(中国水产科学研究院南海水产研究所)资助项目,广西科学研究与技术开发计划项目
摘    要:利用PEN3型电子鼻对不同冷冻贮藏时间的尼罗罗非鱼(Tilapia nilotica)鱼肉进行分析,考察了冷冻贮藏时间对罗非鱼肉挥发性物质的影响,并对所获得试验数据进行了主成分分析(PCA方法)和线形判别分析(LDA方法)。结果显示,电子鼻传感器可以用于区别不同冷冻时间的罗非鱼肉,PCA方法和LDA方法均能较好地辨别出不同贮藏时间的冷冻罗非鱼肉。PCA方法中第一主成分区与第二主成分区的贡献率之和为91.69%,2个主成分已经基本代表了冷冻罗非鱼肉的主要特征信息;LDA方法则呈现出较好的集中性和单向趋向性,两判别式的总贡献率为92.39%。采用LOADINGS分析方法得出传感器W5S、W1S、W2S和W1W在该试验的检测过程中贡献率大,可以根据具体的试验条件对电子鼻传感器的阵列组合进行优化。

关 键 词:冷冻罗非鱼肉  电子鼻  挥发性物质  主成分分析  线性判别分析

Discrimination of tilapia at different frozen storage time by electronic nose
LI Laihao , WANG Guochao , HAO Shuxian , YANG Xianqing , CEN Jianwei , HUANG Hui , WEI Ya. Discrimination of tilapia at different frozen storage time by electronic nose[J]. South China Fisheries Science, 2012, 8(4): 1-6
Authors:LI Laihao    WANG Guochao    HAO Shuxian    YANG Xianqing    CEN Jianwei    HUANG Hui    WEI Ya
Affiliation:1. Key Lab. of Aquatic Product Processing, Ministry of Agriculture; National R&D Center for Aquatic Product Processing ; South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China; 2. College of Food Science and Engineering, Ocean University of China, Qingdao 266003, China)
Abstract:We detected tilapia at different frozen storage time by an electronic nose ( PEN3 ) and analyzed the effect of frozen storage time on its flavor. The data was analyzed by PCA and LDA methods. The results show that electronic nose can discriminate tilapia at different frozen storage time especially well by PCA and LDA methods. The first and second main axes generally represent the main characteristic information of frozen tilapia, whose sum of variances is 91.69% by PCA method. The sum of variances of the first and second main axes is 92.39% by LDA method which has good concentration and single tendency. In addition, sensors WSS, W1S, W2S and W1W in electronic nose (PEN3) analyzed by LOADINGS method play a key role in the detection. Therefore, the screen matrix arrangement of sensors of electronic nose can be optimized according to specific experimental conditions.
Keywords:frozen tilapia  electronic nose  flavor  principal component analysis (PCA)  linear discrimination analysis (LDA)
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