三种木类药材的化学成分红外光谱分析与表征

Characterization and identification of three kinds of wood class medicine by fourier transform infrared spectroscopy

目的采用红外光谱法对3种木类药材的化学成分进行分析和表征，建立准确、简便的木类药材质量控制方法。方法通过官能团指认和纤维素、木质素谱图比较，对沉香、降香、苏木的红外光谱和二阶导数光谱进行化学成分整体分析。结果沉香、降香和苏木的主要组分均为纤维素、木质素、芳香类成分，但其在红外光谱、二阶导数光谱差异说明两者所含芳香类成分不同。结论红外光谱可作为简便快速、客观量化、准确有效的木类药材质量控制方法。

Objective Using infrared spectroscopy to analyze three kinds of lignum Chinese medicine to provide a theoretical basis for the establishment of medicinal overall quality evaluation system. Methods Functional groups identification, Fourier Transform-infrared spectroscopy （FT-IR） and the second derivative infrared spectroscopy （SD-IR） could be applicable to analyze and identify the overall chemical composition of three kinds of lignum Chinese medicine. Results The main chemical components of Aquilariae Lignum Resinatum （ALR）, Dalbergiae Odoriferae Lignum （DOL） and Sappan Lignum （SL） were cellulose, lignin and aromatics. The main chemical compositions of Sappan Lignum （SL） were cellulose, lignin and aromatics. The differences in FT-IR and SD-IR of DOL and SL indicated that they had different aromatic compounds. Conclusion Infrared spectroscopy can be used as a simple and accurate quality control method of three kinds of lignum Chinese medicine.