Optimization of extraction process for tannins from Geranium orientali-tibeticum by supercritical CO2 method / 中国中药杂志
China Journal of Chinese Materia Medica
;
(24): 2912-2914, 2014.
Article
in Chinese
| WPRIM
| ID: wpr-327869
ABSTRACT
In order to optimize extraction process conditions of tannins from Geranium orientali-tibeticum by supercritical CO2, the content of tannins was determined by phosphomolybdium tungsten acid-casein reaction, with extraction pressure, extraction temper- ature and extraction time as factors, the content of tannins from extract of G. orientali-tibeticum as index, technology conditions were optimized by orthogonal test. Optimum technology conditions were as follows extraction pressure was 25 MPa, extraction temperature was 50 °C, extracted 1.5 h. The content of tannins in extract was 12.91 mg x g(-1), extract rate was 3.67%. The method established could be used for assay the contents of tannin in G. orientali-tibeticum. The circulated extraction was an effective extraction process that was stable and feasible, and that provides a way of the extraction process conditions of tannin from G. orientali-tibeticum.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Tannins
/
Carbon Dioxide
/
Drugs, Chinese Herbal
/
Chemistry
/
Geranium
/
Chemical Fractionation
/
Methods
Language:
Chinese
Journal:
China Journal of Chinese Materia Medica
Year:
2014
Type:
Article
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