In order to search an appropriate pretreatment method to nondestructive measure vitamin C content of umbilical orange, the effect of 11 pretreatment methods to the model based on PLS has been compared. The results showed that the best effect was wavelet do-noised. Its R was 0.9574, its RMSECV was 3.90, its best wave band was 7501.7~5449.8 cm-1, and its principal element was 8. The wavelet do-noised was an efficient method to nondestructive measure vitamin C content of umbilical orange with near-infrared spectroscopy.
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夏俊芳,李培武,李小昱,王为,丁小霞.不同预处理对近红外光谱检测脐橙VC含量的影响[J].农业机械学报,2007,38(6):107-111.[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(6):107-111.