多品种洋梨糖度近红外普适性模型的建立

Development of general soluble solids content model of European pear (Pyrus communis L.) by Vis/NIR transmittance technique

中文关键词:  可见/近红外光谱  主成分得分  普适性模型  洋梨  糖度

英文关键词:Vis/NIR spectroscopy  PCs score  general model  European pear  soluble solids content

中文摘要:

      目的 开发多品种洋梨糖度的普适性模型。方法 采用主成分得分空间距离将5个品种洋梨分为两组: 阿巴特 康佛伦斯 五九香(组1), 凯斯凯德 红考密斯(组2)。分别建立多品种洋梨SSC的普适性模型, 以Q值来评价模型综合性能。结果 组1和组2洋梨SSC的普适性模型具有较好性能, 其Q = 0.849、0.735(PLS)和0.875、0.749(MLR)。结论 多品种洋梨品质的MLR普适性模型可用于便携仪器, 实现现场洋梨SSC精确定量检测。

英文摘要:

      Objective To develop a general SSC model of various European pears. Methods According to the space distribution distance of the first three principal components score, five cultivar pears were divided into ‘Abate’ ‘Conference’ ‘Wujiuxiang’ (group 1) and ‘Red Comice’ ‘Cascade’ (group 2). Results The general modeling for SSC of group 1 and group 2 had perfect performance, with Q = 0.849, 0.735(PLS) and 0.875, 0.749(MLR), respectively. Conclusion The results highlight the potential of portable Vis/NIR instru-ments with MLR model for assessing internal quality indices of more cultivars on-site.