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Simultaneous Determination of Eight Bioactive Components of Radix Dipsaci by Near-infrared Spectroscopy
Authors:Weifeng Du  Ying Yang  Dongjing Jiang  Weihong Ge
Institution:1. Research Center of TCM Processing Technology, Zhejiang Chinese Medical University, Hangzhou, China;2. Jiangsu Key Laboratory of Chinese Medicine Processing, Nanjing University of Chinese Medicine, Nanjing, China
Abstract:A new method was developed using Fourier transform near-infrared spectroscopy and high-performance liquid chromatography with diode array detection for the identification and determination of eight major compounds in crude and sweated Radix Dipsaci. Partial least square regression was selected for the analysis. Multiplicative scatter correction, first derivative, and a Savitzky–Golay filter were used for the spectral pretreatment of the crude material, while standard normal variation, first derivative, and the Savitzky–Golay filter were used for the sweated samples. The correlation coefficients of the calibration models were above 0.99 and the root mean square error of calibration, the root mean square error of prediction, and root mean square error of cross-validation were under 0.63. The developed models were used to analyze unknown crude and sweated Radix Dipsaci with satisfactory results. The established methods were rapid, simple, nondestructive, and useful for quality control of Radix Dipsaci.
Keywords:Radix Dipsaci  high-performance liquid chromatography  near-infrared spectroscopy  quality control  quantitative model
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