Results 101 to 110 of about 1,880 (204)

Preparative Purification of Anti-Proliferative Diarylheptanoids from Betula platyphylla by High-Speed Counter-Current Chromatography

Molecules, 2016
A simple and rapid method using high-speed counter-current chromatography (HSCCC), along with bioassay-guided fractionation based on the anti-proliferative activity against renal and colon cancer cells, has been developed for the preparative separation ...
Namki Cho, Hyun Woo Kim, Tae Bum Kim, Tanya T. Ransom, John A. Beutler, Sang Hyun Sung   +5 more
doaj   +1 more source

Isolation and Identification of Two Novel Attractant Compounds from Chinese Cockroach (Eupolyphaga sinensis Walker) by Combination of HSCCC, NMR and CD Techniques

Molecules, 2013
High-speed counter-current chromatography (HSCCC) with a two-phase solvent system composed of n-hextane-ethyl acetate-methanol-water (1.5:1:1.5:1, v/v/v/v) was applied to the isolation and purification of attractants from Chinese cockroach, Eupolyphaga ...
Bin Wu, Xiaodan Wu, Wei Jiang
doaj   +1 more source

Isolation of major flavonoids from Kazakhstan endemic plant Crataegus almaatensis Pojark by high speed counter-current chromatography and their quantification by HPLC. [PDF]

, 2018
Introduction: Hawthorn (Crataegus L.) is a well-known widely used medicinal plant with more than 280 species that are spread in all over the world [1].
Bekbolatova, Elmira, Boylan, Fabio, Ibragimova, Liliya, Kabdenova, Akmaral, Kukula-Koch, Wirginia, Sakipova, Zuriyadda   +5 more
core   +2 more sources

Methods for Squalene Concentration from Palm Fatty Acid Distillate [PDF]

, 2007
Two methods for separating and concentrating of squalene from palm fatty acid distillate (PFAD) by optimizing the enzymatic hydrolysis of PFAD which has been neutralized-hydrolyzed-neutralized before being run onto adsorption column chromatography and by
Chua, Camilla Soo Leng
core  

Semi-Preparative Separation of 10 Caffeoylquinic Acid Derivatives Using High Speed Counter-Current Chromatogaphy Combined with Semi-Preparative HPLC from the Roots of Burdock (Arctium lappa L.)

Molecules, 2018
Burdock roots are healthy dietary supplements and a kind of famous traditional Chinese medicine, which contains large amounts of caffeoylquinic acid derivatives.
Zhenjia Zheng, Xiao Wang, Pengli Liu, Meng Li, Hongjing Dong, Xuguang Qiao   +5 more
doaj   +1 more source

High speed counter current chromatography: A support-free LC technique

Journal of Pharmacy and Bioallied Sciences, 2009
As separation of components is the major requirement of an analytical chemist, there is always a need for a convenient high throughput technique with minimum sample loss, high efficiency, high resolution, and ease of sample recovery, without ...
Neha Sethi, Ankit Anand, Aarti Sharma, Kaushal K Chandrul, Garima Jain, Kona S Srinivasa   +5 more
doaj   +1 more source

Preparative isolation of monomer catechins and oligomer procyanidin fractions from grape seed extracts by high-speed counter-current chromatography

BIO Web of Conferences, 2014
In this paper, monomer (+)-catechin; (-)-epicatechin and (-)-epicatechin-3-o-gallate, three oligomeric procyanidin fractions (OPCs) and one polymeric procyanidin fractions (PPCs) were successfully separated and isolated from grape seed extracts using ...
Shuting Zhang, Yan Cui, Baoshan Sun
doaj   +1 more source

Preparative Separation of Diterpene Lactones and Flavones from Andrographis paniculate Using Off-Line Two-Dimensional High-Speed Counter-Current Chromatography

Molecules, 2019
Seven diterpene lactones, andrographolide (1), isoandrographolide (2), neo-andrographolide (3), 14-deoxy-11,12-didehydroandrographolide (4), 14-deoxyandrographiside (5), 14-deoxy-11,12-didehydroandrographiside (6), 3,14-dideoxyandrographolide (10), and ...
Xiaowei Sun, Huijiao Yan, Yujie Zhang, Xiao Wang, Dawei Qin, Jinqian Yu   +5 more
doaj   +1 more source

Isolation and structure of Pinotin A, a new anthocyanin derivative from Pinotage wine [PDF]

, 2015
Research ...
Jerz, G., Schwarz, M., Winterhalter, P.
core   +2 more sources

Chemical Constituents of the Ethyl Acetate Extract from Diaphragma juglandis Fructus and Their Inhibitory Activity on Nitric Oxide Production In Vitro

Molecules, 2017
Diaphragma juglandis fructus contains various bioactive constituents. Fourteen compounds were isolated from Diaphragma juglandis fructus by preparative high performance liquid chromatography (pre-HPLC) and high-speed counter-current chromatography (HSCCC)
Dan Wang, Yan Mu, Hongjing Dong, Huijiao Yan, Cui Hao, Xiao Wang, Lisi Zhang   +6 more
doaj   +1 more source