Pasting properties by near-infrared re flectance analysis of whole grain paddy rice samples

摘要

A rapid predictive method based on near-infrared re flectance spectroscopy(NIRS)of paddy rice was developed to measure the pasting properties of rice.The paddy rice samples were scanned by a near-infrared re flectance spectrometer in the wavelength region of 1400–2400 nm and preprocessed by mathematical pretreatments prior to pasting properties analysis using a rapid visco-analyzer(RVA).The results indicated that the developed models of setback(SB),peak viscosity(PV),breakdown(BD)and consistency(CS)provided good prediction results with relatively high correlation coe±cients(0.81–0.96).In addition,the validity of the calibration models was statistically tested.Standard error of prediction(SEPT) and bias were small enough without any significance at 95% confidence interval.Nonetheless,this study proved that the use of NIRS for predicting pasting properties was feasible in paddy rice and could be applied in commercial trade and research.