Results 11 to 20 of about 3,973 (221)

Two-Step Separation of Nostotrebin 6 from Cultivated Soil Cyanobacterium (Nostoc sp.) by High Performance Countercurrent Chromatography [PDF]

Molecules, 2014
High performance countercurrent chromatography (HPCCC) was successfully applied for the separation of nostotrebin 6 from cultivated soil cyanobacteria in a two-step operation.
José Cheel, Petra Kučerová, Ian Garrard, Svetlana Ignatova, Pavel Hrouzek, Jiří Kopecký   +5 more
doaj   +4 more sources

Bioassay-Guide Preparative Separation of Hypoglycemic Components from Gynura divaricata (L.) DC by Conventional and pH-Zone Refining Countercurrent Chromatography [PDF]

Foods
Gynura divaricata (L.) DC is a long-used medicinal and edible plant in China folk. Its hyperglycemic effects have garnered increasing public attention in recent years.
Zetao Shen, Jing Xu, Lijiao Wen, Lu Yin, Xueli Cao, Hairun Pei, Xi Zhao   +6 more
doaj   +2 more sources

Antimycobacterial and Nitric Oxide Production Inhibitory Activities of Goyazensolide and Centratherin Isolated From Eremanthus crotonoides by High-Speed Countercurrent Chromatography. [PDF]

Chem Biodivers
ABSTRACT In this study, bioassay‐guided fractionation of the ethanolic extract from Eremanthus crotonoides leaves enabled the isolation of two bioactive sesquiterpene lactones, centratherin and goyazensolide, which were evaluated for their antimycobacterial and anti‐inflammatory properties.
da Rocha Ximenes NG, Calixto SD, Simão TLBV, Lassunskaia EB, de Homobono de Brito Moura P, Leal IRC, Muzitano MF, Pinto SC.   +7 more
europepmc   +2 more sources

Advances in Eco-Friendly Extraction of Fruit Bioactive Compounds: Technologies, Challenges and Future Directions. [PDF]

Anal Sci Adv
Fruit bioactive compounds offer antioxidant, anti‐inflammatory, and preventive benefits, yet extraction is hindered by poor solubility and conventional methods using toxic solvents and high energy. This review evaluates traditional and advanced eco‐friendly technologies, highlighting efficiency, selectivity, and sustainability.
Hndeya AG, Sbhatu DB, Gebreyohannes G.
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

Review of High-Speed Countercurrent Chromatography in Separation of Lanthanides and Actinides

He huaxue yu fangshe huaxue, 2022
In the field of radiochemistry, separation of lanthanides and actinides has always been one of the research hotspots. In order to achieve the burnup analysis, the lanthanide and actinide elements in the solution need to be separated.
LI Yu-hao, DING You-qian, WANG Xiu-feng, GANG Fa-yuan, YUE Yuan-zhen, FU Zhi-hai, BAI Long   +6 more
doaj   +1 more source

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

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