Identification of root bark of Morus alba and its confusable species by IR-fingerprint / 中草药

ABSTRACT

Object To establish the IR spectrometry fingerprint of the certified root bark of Morus alba L. (RBMA) and its confusable species, so as to identify them. Methods The infrared spectrometry was used. Results Three types of fingerprint were obtained from certified RBMA from different productive area and five types of fingerprint obtained from confusable species. These spectra were analyzed and the transmittance of (1 627?7) cm -1 of fingerprint area was taken as the standard absorbed peak (Ts) and the transmittance of (1 026?5) cm -1 of fingerprint area as the characteristic obsorbed peak (COP, Ti), the relative transmittance (Tr) was calculated by the formula Tr=Ti/Ts. Conclusion The tested samples of which Tr 1 and COP was single peak or Tr