香加皮和五加皮的二维相关近红外光谱快速无损鉴别

五加皮为五加科植物细柱五加（Acanthopanax gracilistylus W．W．Snfith）的干燥根皮，香加皮为萝摩科植物杠柳（Periploca sepium Bge.）的干燥根皮。香加皮功效为祛风湿、强筋骨，主用于风寒湿痹、腰膝酸软、心悸气短、下肢浮肿等。香加皮因含有十余种柳杠甙（A～O，其中G为强心苷）等成分而有毒，不能超剂量长期服用。五加皮以祛风湿、强筋骨、补肝肾为主要功效，尤以补肝肾见长。然而，目前混用情况相当严重，曾多次发生“五加皮酒”中毒的报道，因此香加皮和五加皮的区别使用非常重要。

Identification of Cortex Periplocae and Cortex Acanthopanacis by near infrared and generalized two-dimensional correlation spectroscopy

Aim:The fast and nondestructive identification of Cortex Periplocae and Cortex Acanthopanacis by Fourier transform near infrared spectroscopy and generalized two-dimensional(2D) correlation spectroscopy were performed.Methods:Near infrared spectra of Cortex Periplocae and Cortex Acanthopanacis was used for computation of the 2D correlation spectra and comparison of the synchronous and asynchronous 2D correlation spectra.Results:Two of the analytes had similar spectral characteristics in one-dimensional near infrared while quite different in 2D correlation spectra.Cortex Periplocae and Cortex Acanthopanacis were identified visually using the 2D correlation spectra in region 5 600～4 700 cm~(-1)and 7 200～6 600 cm~(-1).Conclusion:The results prove that 2D correlation spectra could enhance the resolution of near infrared spectra and increase the capacity of identification.The combination of 2D correlation spectroscopy and near infrared spectroscopy allow a new and convenient approach for evaluating the medicinal herbs.