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目的:对白花丹参不同部位进行红外光谱分析。方法:采用红外光谱三级鉴定法(红外光谱、二阶导数谱以及二维相关谱),对白花丹参根、茎、叶、花的粉末、脂溶性和水溶性提取物进行分析鉴定。结果:叶在有效成分特征吸收区1 800～1 200 cm-1波段峰强高于根、茎、花。一维图谱中,除花外,脂溶性提取物根、茎、叶均有邻醌C=O特征吸收1 692,1 670 cm-1峰出现;水溶性提取物叶、花的丹酚酸B芳香化合物骨架振动1 610 cm-1峰较根、茎明显。二阶导数谱中,脂溶性提取物和水溶性提取物均出现标准品谱图的特征峰,印证一维谱图结论;二维相关光谱中,白花丹参不同部位自动峰位置及强度均不相同。结论:白花丹参不同部位化学成分种类及含量有所差异,茎、叶、花是值得进一步开发利用的资源。
Objective: To analyze the infrared spectroscopy of different parts of Salvia miltiorrhiza. Methods: The powder, fat-soluble and water-soluble extracts of root, stem, leaf and flower of Salvia miltiorrhiza were analyzed and identified by the three-level infrared spectroscopy identification method (infrared spectrum, second derivative spectrum and two-dimensional correlation spectrum). Results: The leaf peak intensity in the band of 1 800 ~ 1 200 cm-1 in the active ingredient absorption zone was higher than that of roots, stems and flowers. In the one-dimensional map, in addition to the flowers, the roots, stems and leaves of liposoluble extracts showed the characteristic absorption of 1,602 cm-1 at the characteristic absorption of C = O. The water-soluble extracts of leaves, flowers of salvianolic acid B The aroma compound skeleton vibrated 1 610 cm-1 peak more than the root, stalk obvious. In the second derivative spectrum, the characteristic peaks of the standard spectra appeared in the fat-soluble extract and the water-soluble extract, confirming the conclusion of the one-dimensional spectrogram. In the two-dimensional correlation spectrum, the positions and intensities of the auto-peaks of different parts of Salvia miltiorrhiza were different . Conclusion: The chemical composition and content of Salvia miltiorrhiza in different parts are different. Stem, leaf and flower are the resources worthy of further development and utilization.