查看文章

The feasibility of using the efficient selection wavelength regions in FT-NIR for a rapid and conclusive determination of fruit inner qualities such as soluble solid content (SSC) of apples was investigated. An apple's NIRS acquisition device was developed in this study. With this device, the apple was rolling while collecting the NIR spectroscopy. Graphically-oriented local multivariate calibration modeling procedures called interval partial least-squares (iPLS), backward interval partial least-squares (BiPLS), forward interval partial least-squares (FiPLS), genetic algorithm interval partial least-squares (GA-iPLS) and genetic algorithm partial least-squares (GA-PLS) were applied to select the efficient spectral regions that provide the lowest prediction error, in comparison to the full-spectrum model. The optimal combinations of 12 spectral intervals among 40 intervals which selected by BiPLS yielded a good result (RMSEC …