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A Method for Nondestructive Analysis of Vitamin C of Orange

机译：一种非破坏性分析橙色维生素C的方法

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In order to establish a method for nondestructive measurement of vitamin C content of orange, the effect of 11 pretreatment methods to the model based on PLS had been compared in the paper. The best effect of them was wavelet do-noised. And compared the model effect based on wavelet transformation by different decomposing level, the results showed that the PLS results were not the same when the wavelet decomposing level was different. PLS result was the best at a wavelet decomposing level of 4. Its R was 0.957 4, and its RMSECV was 3. 9mg/100g, the optimal spectral wave band best reflecting the Vc content of orange was 7 501.7 -5 449. 8 cm-1, the best principal component for PLS models was 8. The wavelet do-noised was an efficient method to nondestructive measure vitamin C content of orange with near-infrared spectroscopy.
机译：为了建立一种无损测量维生素C含量的橙色的方法，在纸上比较了11种预处理方法对基于PLS模型的影响。它们的最佳效果是小波的发声。并将基于小波变换的模型效应与不同分解水平进行比较，结果表明，当小波分解水平不同时，PLS结果与不同。 PLS结果是最佳的小波分解4.其R为0.957 4，其RMSECV为3. 9mg / 100g，最佳光谱波浪最佳反映橙色的VC含量为7 501.7 -5 449. 8厘米-1，PLS模型的最佳主成分为8.小波弄清是一种有效的方法，可利用近红外光谱无损测量维生素C含量的维生素C含量。

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