Rapid Non-destructive Determination of Sanshool and Essential Oil Content in Zanthoxylum bungeanum Maxim.
A rapid and non-destructive method for the determination of sanshool and essential oil content in Zanthoxylum bungeanum Maxim.was proposed by near infrared spectroscopy combined with least squares method.Taking 92 samples of Zanthoxylum bungeanum Maxim.as object,using the second derivative for spectral preprocessing,under the optimum spectral range and the main factor,the quantitative models for sanshool and essential oil were established and validated.The results showed that the correlation coefficients were 0.966 5 and 0.977 8,the predicted mean square deviation were 0.470 and 0.413,and the relative deviation is less than 5%in the external verification.The established model exhibited high quality and strong prediction ability,providing a potential application in rapid quality evaluation of Zanthoxylum bungeanum Maxim.
near infrared spectroscopyZanthoxylum bungeanum Maxim.sanshoolessential oilnon-destructive detection
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