Infrared spectroscopy and chemometrics for the starch and protein prediction in irradiated rice

► The content of rice after irradiation could be analysed through IR spectroscopy. ► The NIR region is the best for prediction of starch in irradiated rice. ► The MIR region is the best for prediction of protein in irradiated rice. ► The SW-LS-SVM models were better than PLS models for content analysis. ► The ICA was a powerful way for selection of sensitive wavelengths for irradiated rice.