Identification of Zhibai Dihuang Pills from Different Manufacturer by Near-infrared Spectroscopy Method

To establish a qualitative calibration model for the identification of Zhibai Dihuang pills from different manufacturer by discriminant analysis. Near-infrared spectra of different batch of Zhibai Dihuang pills from different manufacturer were collected. The qualitative analyses model of Zhibai Dihuang pills was built by using NIRS combined with discriminant analyses based on the difference of traditional Chinese medicine preparation. The qualitative calibration model could distinguish Zhibai Dihuang pills from different manufacturer accurately. The discrimination result of discriminant analyses were consistent with practical result. The method is accurate, fast, simple. It can provide a new approach to identify Zhibai Dihuang pills from different manufacturer by non-destructive NIRS combined with discriminant analysis. It was valuable for us to research the quality of traditional Chinese medicine preparation.