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Rapid determination of reducing sugar content by near infrared spectroscopy

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Abstract

The feasibility of near infrared (NIR) spectroscopy and least squares support vector machine (LSSVM) for rapid determination of reducing sugar content in potatoes was investigated. Statistical models were developed between reducing sugar content and NIR spectra by LSSVM. Compared to partial least squares regression (PLSR), the performance of LSSVM model was a slight superior with higher correlation coefficient of prediction (rp) of 0.992 and lower standard error of prediction (SEP) of 0.130%. The results show that LSSVM is a suitable tool to deal with nonlinear problem, and NIR technique can be used for measuring reducing sugar content in potatoes rapidly.

© 2014 Optical Society of America

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