Title: Non-destructive testing of internal qualities of sweet persimmon in different storage by near-infrared diffuse reflectance spectroscopy
Abstract: To establish mathematical relationship between near infrared diffuse reflection(NIR)spectroscopy and internal qualities of sweet persimmon, and to evaluate it. In this paper, soluble solids and hardness as the evaluation index, in the spectral region between 400~2500 nm, to establish calibration model for storage period at room temperature, at cold temperature and complex respectively.Using optimal model to predict 40 unknown samples, the results showed that the modified partial least squares(MPLS) model, with respect to the first derivative D1 lg(1/R) and weighted multiple scatter correction, provided better prediction performance for SSC and firmness of sweet persimmon, with the root mean square error of prediction(SEP) of 0.376, 0.055 respectively, the correlation coefficient of prediction(R P 2) of 0.832, 0.866 respectively, ratio performance deviation(RPD) of 2.416, 2.418 respectively. The preliminary research on the built models indicated that nondestructive measurement of internal qualities of sweet persimmon in different storage using NIR spectroscopy technique was feasible.
Publication Year: 2013
Publication Date: 2013-01-01
Language: en
Type: article
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