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
em Zh
| WPRIM
| ID: wpr-327869
Biblioteca responsável:
WPRO
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.
Texto completo:
1
Base de dados:
WPRIM
Medicinas Tradicionais:
Medicinas_tradicionales_de_asia
/
Medicina_china
Assunto principal:
Taninos
/
Dióxido de Carbono
/
Medicamentos de Ervas Chinesas
/
Química
/
Geranium
/
Fracionamento Químico
/
Métodos
Idioma:
Zh
Revista:
China Journal of Chinese Materia Medica
Ano de publicação:
2014
Tipo de documento:
Article