Studies on the IR Spectra of Lobed Kudzuvine (Pueraria lobata)and Xiaoji (cirsium setosum ) Collected at Different Times / 中草药

ABSTRACT

Extracts of Radix Pueraria and Herba Cirsii, obtained by the same isolating procedure,were examined with IR spectra. Results showed that the IR spectra of Radix Pueraria lobota and Herba Cirsii,collected at different times had distiuct characteristics,consistency aud repcatability.The spectra of Radix Pueraria thomsonii also showed characteristic evidence.Accordingly, Radix pueraria and Herba Cirsii may be well distinguished by means of IR spectra.