可见/近红外漫反射光谱预测磨盘柿成熟度

摘要

Using visible and near infrared diffuse reflectance (VIS/NIR) spectroscopy to predict the method of Mopan persimmon maturity rapidly according to peel color a* was studied. In the whole spectral region , calibration results for the peel color a* of fruit were compared with different treatments methods. The results showed that the modified partial least squares (MPLS) model,with respect to the first derivative D1 log (1/R) and None,provided better prediction performance for the peel color a*of fruit,with the correlation coefficient of cross validation of calibration (Rcv)and correlation coefficient of prediction (Rp2),the root mean square error of cross validation of calibration (RMSECV) ,the root mean square error of prediction (RMSEP),and ratio performance deviation (RPD) of 0.989 6,0.985,0.550 3,0.585 9 and 11.38 respectively. The preliminary research on the built models indicated that rapid nondestructive prediction of the peel color a* of Mopan persimmon fruit using VIS/NIR spectroscopy technique was feasible.%　　研究可见/近红外漫反射光谱技术根据果皮色泽a*来快速预测磨盘柿成熟度的方法。在全光谱区域对比分析不同处理方法对果皮色泽a*定标模型的影响。结果表明，应用改进偏最小二乘回归算法、一阶导处理和无散射处理所建果皮色泽a*定标模型的预测性能较优，其定标交互验证相关系数（Rcv）和预测相关系数（Rp2）分别为0.9896和0.985，定标交互验证均方根误差（RMSECV）和预测均方根误差（RMSEP）分别为0.5503和0.5859，RPD为11.38。研究表明，可见/近红外漫反射技术对磨盘柿果皮色泽a*的快速无损预测具有可行性。