应用电子鼻技术对水蜜桃储藏期内品质变化的研究

Study on the Quality of Jucy Peaches during Store Using an Electronic Nose

DOI：

中文关键词: 水蜜桃 储藏期 电子鼻 芳香成分

英文关键词: jucy peach shelf life electronic nose aroma composition

基金项目:江南大学食品学院青年博士科研创新开放基金项目(FS-200803);食品科学与技术国家重点实验室项目

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中文摘要:

利用电子鼻PEN3系统对不同储藏时间下水蜜桃芳香成分进行检测分析。通过电子鼻系统动态采集试验得到水蜜桃芳香成分的响应值,并利用PCA、LDA等模式识别方法进行数据分析。结果表明LDA方法能更好地将不同储藏时间的水蜜桃分为3个阶段,即:第0天、第1d～第3d与第4d～第6d。说明利用电子鼻能够对不同储藏时间的水蜜桃进行无损检测与区分,并能直观地反映出水蜜桃在储藏期的生理变化规律。同时采用Loadings的分析方法对PEN3系统的传感器响应值进行分析。结果表明,第6、8、5号传感器在水蜜桃储藏期品质检测中起主要作用。

英文摘要:

The aroma composition in jucy peaches was detected by an electronic nose during diferent storage time.The aroma composition emanating from the Jucy peaches was sampled by PEN3 systems,and the response values of PEN3 was obtained,The data was analyzed using principal component analysis (PCA) and linear diserimination analysis (LDA),respectively.The results showed that electronic nose was able to better classify the jucy peaches by LDA method,and a clear distinction was available among jucy peaches on 0day,day1～day3 and day4～day6.Moreover,The changes of aroma composition reflected the regularity of physiological and quality change in jucy peaches during the storage time.The sensor 6,sensor8 and sensor5 played important roles in the quality detection of Jucy peaches by using loadings analysis.

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