利用电子鼻技术评价桃果实成熟度的研究  

Evaluation of Maturity of Peach by Electronic Nose

作　　者：张鑫[1] 齐玉洁[1] 杨夏[1] 贾惠娟[1] 

机构地区：[1]浙江大学农业与生物技术学院,浙江杭州310029

出　　处：《华南农业大学学报》2012年第1期23-27,共5页Journal of South China Agricultural University

基　　金：浙江省重点科技创新团队建设项目(2009R50033)

摘　　要：采用电子鼻系统对不同成熟度‘锦绣黄桃’果实进行评价研究.主成分分析(PCA)和判别因子分析法(DFA)的结果显示,电子鼻可以较好地区分转色期、成熟期和完熟期的果实,但成熟期、完熟期的果实有部分区域发生重叠.为了评价电子鼻的分析能力,将其预测结果与传统的理化检测方法(硬度、可溶性固形物、可滴定酸、挥发性香气组分)及生理指标(乙烯释放速率)得到的结果进行了比较.结果表明,采用电子鼻系统中的PCA较DFA更能准确区分桃果实的不同成熟度.In this study, electronic nose technology combined with quality and physiological indexes was used to evaluate three levels of maturity of ＇ Jinxiuhuangtao＇ peach. The results showed that color turning peaches could be distinguished from mature and ripe peaches using the score plot of principal component analysis （PCA） by the electronic nose measurement. However, mature and ripe peaches were not well distinguished from each other because of existence of overlapping. The predicted results were compared with the results of the traditional chemical and physical test methods （ firmness, total soluble solids, titration acid volatile and aromatic constituents） and physiological indexes （ethylene release rate）. The comparisons showed that PCA analysis was more accurate than discriminant factor analysis （DFA）. Electronic nose technology could provide a basic tool for distinguishing different levels of maturity of peaches.

关 键 词：电子鼻 锦绣黄桃 成熟度 主成分分析 判别因子分析 品质评价 

分 类 号：S662.1[农业科学—果树学]