Abstract: This paper described the calibration and prediction of the major nutritional components in 242 samples of Chinese cabbage on a NIRsNear Infrared spectrophotometer).These samples of different cultivars and mature periods were collected from the main producing area in China.The results showed that the multiple correlation coefficientsMR)between the content values of crude protein CP),neutral detergent fibreNDF),reduced sugarsRS)and vitamin CVC)determined by NIRs and chemical analysis were 0.9958,0.9852,0.9821 and 0.9814,respectively,with the standard errors of calibrationSEC)being 0.398%,0.134%,0.098% and 0.51mg/100g correspondingly.Comparison of each pair of values for each of 4 nutrients,determined by NIRs and chemical analysis respectively showed that the correlation coefficients between the above methods for the 4 nutrients were 0.994,0.978, 0.974,and 0.981,with the standard error of prediction SEP) being 0.353%,0.127%,0.108%,and 0.548mg/100g respectively.This indicates that NIRs is comparable to chemical methods in both accuracy and precision and is a reliable method for the determination of nutrients in Chinese cabbage.

Key words: NIRs, Chinese cabbage, Nutrients

CLC Number: 

• S634.101