Separation of three polar compounds fromRheum tanguticumby high-speed countercurrent chromatography with an ethyl acetate/glacial acetic acid/water system

2018 ◽  
Vol 41 (8) ◽  
pp. 1775-1780 ◽  
Author(s):  
Tao Chen ◽  
Ping Wang ◽  
Nana Wang ◽  
Chongyang Sun ◽  
Xue Yang ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Ethyl Acetate ◽  
High Speed ◽  
Glacial Acetic Acid ◽  
Water System ◽  
Polar Compounds ◽  
Acid Water ◽  
Countercurrent Chromatography ◽  
Acetic Acid Water

HSCCC Separation of Three Main Compounds from the Crude Extract of Dracocephalum Tanguticum by Using Dimethyl Sulfoxide as Cosolvent

2020 ◽  
Author(s):  
Xue Yang ◽  
Yongling Liu ◽  
Tao Chen ◽  
Nana Wang ◽  
Hongmei Li ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Ethyl Acetate ◽  
Dimethyl Sulfoxide ◽  
Efficient Method ◽  
Crude Extract ◽  
High Speed ◽  
Glacial Acetic Acid ◽  
Butyl Alcohol ◽  
Preparative Hplc ◽  
Counter Current

Abstract Separation of natural compounds directly from the crude extract is a challenging work for traditional column chromatography. In the present study, an efficient method for separation of three main compounds from the crude extract of Dracocephalum tanguticum has been successfully established by high-speed counter-current chromatography (HSCCC). The crude extract was directly introduced into HSCCC by using dimethyl sulfoxide as cosolvent. Ethyl acetate/n-butyl alcohol/0.3% glacial acetic acid (4: 1: 5, v/v) system was used and three target compounds with purity higher than 80% were obtained. Preparative HPLC was used for further purification and three target compounds with purity higher than 98% were obtained. The compounds were identified as chlorogenic acid, pedaliin and pedaliin-6″-acetate.

Phase Diagram of Ternary Magnesium Acetate-Acetic Acid-Water System at 298.1 and 333.1 K

2007 ◽  
Vol 29 (1) ◽  
pp. 30-33
Author(s):  
Hong-Kun Zhao ◽  
Dao-Sen Zhang ◽  
Rong-Rong Li ◽  
Qiu-Hong Zhang ◽  
Cao Tang
Keyword(s):  
Phase Diagram ◽  
Acetic Acid ◽  
Water System ◽  
Acid Water ◽  
Magnesium Acetate ◽  
Acetic Acid Water

Influence of Marangoni convection on mass transfer in the n-propyl acetate/acetic acid/water system

2014 ◽  
Vol 111 ◽  
pp. 278-285 ◽  
Author(s):  
Huidong Zheng ◽  
Weifeng Ren ◽  
Kunxiong Chen ◽  
Yao Gu ◽  
Zhengshuai Bai ◽  
...  
Keyword(s):  
Mass Transfer ◽  
Acetic Acid ◽  
Marangoni Convection ◽  
Water System ◽  
Acid Water ◽  
Propyl Acetate ◽  
Acetic Acid Water
Sign in / Sign up

Export Citation Format

Share Document