Results 21 to 30 of about 1,452 (205)

Fast preparative separation of flavones from capitula of Eriocaulon ligulatum (Vell.) L.B.Smith (Eriocaulaceae) by High-speed countercurrent chromatography (HSCCC)

Revista de Ciências Farmacêuticas Básica e Aplicada, 2005
High-speed countercurrent chromatography (HSCCC) is a leading method for the fast separation of natural products from plants. It was used for the preparative isolation of two flavone monoglucosides present in the capitula of Eriocaulon ligulatum (Vell ...
L.C. Santos, M.A.M. Silva, C.M. Rodrigues, J. Rodrigues, D. Rinaldo, M. Sannomiya, W. Vilegas   +6 more
doaj   +1 more source

APPLICATION OF PREPARATIVE HIGH-SPEED COUNTERCURRENT CHROMATOGRAPHY FOR SEPARATION OF ELATINE FROM DELPHINIUM SHAWURENSE. [PDF]

J Liq Chromatogr Relat Technol, 2008
Yang Y, Gu D, Wu H, Aisa HA, Zhang T, Ito Y.   +5 more
europepmc   +2 more sources

Spiral Tube Assembly for High-Speed Countercurrent Chromatography: Choice of Elution Modes for Four Typical Two-Phase Solvent Systems. [PDF]

J Liq Chromatogr Relat Technol, 2008
Ito Y, Clary R, Powell J, Knight M, Finn TM.   +4 more
europepmc   +3 more sources

Separation and Purification of Flavonoids from Black Currant Leaves by High-Speed Countercurrent Chromatography and Preparative HPLC. [PDF]

J Liq Chromatogr Relat Technol, 2010
He D, Huang Y, Ayupbek A, Gu D, Yang Y, Aisa HA, Ito Y.   +6 more
europepmc   +2 more sources

Synthesis and Application of Zearalenone Substitute Cyclododecyl 2,4-Dihydroxybenzoate

Liang you shipin ke-ji, 2021
Cyclododecyl 2,4-dihydroxybenzoate (CDHB) is very similar to zearalenone (ZEN) in terms of size,shape,steric conformation and property.It is commonly used as a template of ZEN for the preparation of molecularly imprinted polymers.N’N′-carbonyldiimidazole
HAN Yang-ying, WANG Jun, LIU Hu-ju, SUN Chang-po   +3 more
doaj   +1 more source

The isolation of (6S, 9S)-cyclo (prolylvalyl) from marine actinomycete, by use of high speed contercurrent chromatography [PDF]

Journal of the Serbian Chemical Society, 2002
The marine actinomycete B 1758 came from the actinomycete collection of the Alfred Wegener Institute for Polar and Marine Research in Bremerhafen Germany. 1.079 g of raw extract was obtained by fermentation.
Šmelcerović Andrija A., Schiebel Mirko, Đorđević Siniša M.   +2 more
doaj   +1 more source

Two-Step Purification of Cordycepin from Cordyceps Millitaris by High-Speed Countercurrent Chromatography. [PDF]

J Liq Chromatogr Relat Technol, 2009
Ju X, Sun Y, Cao X, Jiang J, Zhang T, Ito Y.   +5 more
europepmc   +2 more sources

Developments of instruments and methods related with high-speed countercurrent chromatography and their applications in research of natural medicines

Open Chemistry, 2012
High-speed countercurrent chromatography (HSCCC) is a liquid-liquid separation chromatographic technique which uses no solid supporting medium. During its rapid development in the last 30 years, great progress has been made in the instrumentation, the ...
Yao Shun, Cao Yu, Jia Chun-mei, Wang Yan, Song Hang   +4 more
doaj   +2 more sources

Optimizations of extraction and separation process of saponins and in vitro antioxidant activity from the female gonad of Apostichopus japonicus

Shipin yu jixie, 2022
Objective: This study aimed to optimize the ultrasonic-assisted extraction technology and HSCCC separation process of saponins from the female gonad of Apostichopus japonicus and to explore their antioxidant activities.
ZHONG Jing-shi, ZHANG Jian, LIU Fang, WANG Gong-ming, WANG Yi-xin   +4 more
doaj   +1 more source

Isolation of Two New Phenolic Glycosides from Castanopsis chinensis Hance by Combined Multistep CC and HSCCC Separation and Evaluation of Their Antioxidant Activity

Molecules, 2023
The characteristics of high polarity and susceptibility to oxidation in phenolic glycosides increase the difficulty of their separation from natural products.
Ya-Feng Wang, Ping Lin, Yong-Lin Huang, Rui-Jie He, Bing-Yuan Yang, Zhang-Bin Liu   +5 more
doaj   +1 more source