AI Article Synopsis
- The study aimed to assess the effectiveness of combining CO2 supercritical fluid extraction (SFE) with molecular distillation (MD) for extracting and purifying the volatile components of the Chinese herbal medicine Ligusticum wallichii Franch.
- SFE successfully extracted 45 chemical constituents, but MD further refined the extract, leaving 39 constituents and altering their concentrations.
- The findings suggest that this combined method is superior to using SFE alone for handling the extraction and purification of volatile components in Chinese herbs.
Article Abstract
Objective: To evaluate the possibility of using the technique of CO2 supercritical fluid extraction (SFE) combined with molecular distillation (MD) to extract, separate and purify the volatile components of Ligusticum wallichii Franch, a Chinese herbal medicine.
Methods: SFE was employed to extract the volatile components of Ligusticum wallichii Franch, followed by MD of the product. Analysis of the chemical constituents of the extract both before and after MD was performed with gas chromatography (GC) in conjunction with mass spectrography (MS).
Results: There were 45 kinds of chemical constituents in the extract of Ligusticum wallichii Franch yielded from SFE, among which 39 were left after distillation by MD. Changes also took place in the content of the constituents in the extract after distillation.
Conclusions: SFE combined with MD, a technique better than simple SFE, can be used to extract, separate and purify the volatile components of Chinese herbs.
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