Rapid Non-destructive Detection for Molds Colony of Paddy Rice Based on Near Infrared Spectroscopy
2014
Qiang, Zhang | Cheng-hai, Liu | Jing-kun, Sun | Yi-juan, Cui | Qun, Li | Fu-guo, Jia | Xian-zhe, Zheng
Near infrared spectrometer technology under a wavelength range of 918-1045 nm was used to rapidly detect paddy rice that was stored at 5°C, 15°C and 25°C. A total of 121 paddy rice samples were collected from artificial infection with moulds to build the calibration models to calculate the total number colony of moulds based on the principal component regression method and multiple linear regression method. The results of statistical analysis indicated that multiple linear regression method was applicable to the detection of the total number colony of moulds. The correlation of calibration data set was 0.943. The correlation of prediction data set was 0.897. Therefore, the result showed that near infrared spectroscopy could be a useful instrumental method for determining the total number colony of moulds in paddy rice. The near infrared spectroscopy methodology could be applied for monitoring mould contamination in postharvest paddy rice during storage and might become a powerful tool for monitoring the safety of the grain.
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