苍术炮制品超临界CO_2萃取和萃取物的紫外光谱分析

Study on the Technology of SFE-CO_2 of Crude and Processed Cangzhu and Its Extract Analysed by UV

目的 确定超临界CO2萃取技术提取南北苍术及其炮制品超临界CO2萃取物的条件,进而探求苍术炮制前后 紫外光谱的变化。方法 用超临界CO2萃取技术,获得南北苍术及其炮制品的超临界CO2萃取物,进行紫外光谱扫描。 结果 超临界CO2萃取物为深红色清澈油状物,或红褐色粘稠状物,收率5．50％-7．50％。不同产地的苍术其生品和炮 制品吸收峰位基本相同,分别为266nm,296nm,315nm,335nm,356nm(sh),但吸收度的比值有明显差异。结论 本法萃取 条件稳定,萃取物得率高。紫外扫描的峰位可做为苍术及其炮制品超临界CO2萃取物的鉴别依据。峰的吸收度比值存在 明显的差异,提示苍术在炮制前后其CO2萃取物成分发生了相应变化。

Objective： To study the technology of supercritical-CO2 extraction （SFE-CO2） of crude and processed Cangzhu, and find out the UV changes of the extract. Methods ：Extracting Cangzhu with SFE-CO2. Analyzing the extract with UV. Results ： The extract with SFE-CO2 is crimson clear oil or rufous glutinous liquid. The rate is 5.5%- 7.50%. Whether Atractylodes chinensis （DC.）Koidz or Atractylodes lancea （Thunb.）DC. Whether Crude or processed, their UV peaks are almost same. They are 266nm, 296nm, 315nm, 335nm, and 356nm（ sh ）. Conclusion： The extraction condition in the article is very practical. The extrcat from Cangzhu with SFE--CO2 can be identified by UV.