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浙江大学学报（农业与生命科学版）
Journal of Zhejiang University: Agric. & Life Sci.  2010, Vol. 36 Issue (5): 568-572    DOI: 10.3785/j.issn.1008-9209.2010.05.014
Food sciences     
Discrimination of different storage time of the pork by electronic nose
HONG Xue-zhen,WANG Jun,ZHOU Bo,WANG Yong- wei
Departmentof Biosystems Engineering,Collegeof Biosystems Engineering and Food Science,Zhejiang University,Hangzhou310029,China
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Abstract  An electronic nose (e-nose,PEN 2) was employed to classify the pork groups with different storage times (0-6 d) . To acquire the optimum experimental procedure,the method of analysis of variance (ANOVA) was adopted . The results showed that the mass of the pork samples affected highly significantly the result of discrimination,and next was the headspace-generated time . By applying one-way ANOVA and discrimination power (DP),the optimum experimental parameters were acquired :10 g sample with 5 min headspace-generated time . The later experiment was taken under the optimum experimental parameters,and the principle components analysis (PCA),as well as linear discriminant analysis (LDA) were employed . The result showed that e-nose with the optimum parameters could classify the samples stored0-6 d well .

Published: 13 September 2010
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HONG Xue-zhen
WANG Jun
ZHOU Bo
WANG Yong- wei
Cite this article:

HONG Xue-zhen,WANG Jun,ZHOU Bo,WANG Yong- wei. Discrimination of different storage time of the pork by electronic nose. Journal of Zhejiang University: Agric. & Life Sci., 2010, 36(5): 568-572.

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http://www.zjujournals.com/agr/10.3785/j.issn.1008-9209.2010.05.014     OR     http://www.zjujournals.com/agr/Y2010/V36/I5/568


猪肉储藏时间的电子鼻区分方法

用电子鼻对不同储藏时间(0～6 d)的猪肉样品进行区分,并确定电子鼻区分不同储藏时间肉 品的较佳实验参数 。对传感器信号进行多因素方差分析(analysis of variance,ANOVA)表明 :对于固定 容器的猪肉样品,不同的样品质量对电子鼻响应信号的影响极为显著 ;其次是样品在烧杯内的密封时 间 。通过单因素方差分析和区分度指标检验,得出猪肉在500 mL烧杯内的最佳参数为样品质量10 g、 密封时间5 min 。采用以上参数,对储藏0～6 d的猪肉样品进行辨别,结果发现不管是运用主成分分析 (principle components analysis,PCA)还是线性判别分析(linear discriminant analysis,LDA),电子鼻都 能很好地区分不同储藏天数的猪肉样品 。
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