关键词: 土茯苓, 红外指纹图谱, 二阶导数图谱, 真伪鉴别, 溯源

Abstract:

The aim of this study was to establish a simple and rapid method to identify the rhizome of Smilax glabra Roxb.
and its adulterants from different sources. Fourier transform infrared spectroscopy (FTIR) combined with second derivative
spectra was used to analyze 30 samples of Smilax glabra Roxb. rhizome and adulterants. The differences in their fingerprint
characteristics were observed, which permit discrimination between Smilax glabra Roxb. rhizome and its adulterants from
different sources. Also an attempt was made to classify Smilax glabra Roxb. samples from different geographic sources by
second derivative spectra. This study demonstrated that infrared fingerprint combined with second derivative spectra can
be applied in the identification or quality and traceability control of Smilax glabra Roxb. rhizome. This method is specific,
rapid, stable and nondestructive.

Key words: Smilax glabra Roxb., infrared fingerprint, second derivative spectra, identification, traceability