Results 101 to 110 of about 1,915 (220)

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

open access: yesMolecules, 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

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

open access: yes, 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  

New Metabolite With Inhibitory Activity Against α-Glucosidase and α-Amylase From Endophytic

open access: yesNatural Product Communications, 2020
An efficient bioactive tracking separation strategy based on liquid-liquid extraction and high-speed counter-current chromatography (HSCCC) was developed and used to isolate bioactive natural products from the endophytic fungus Chaetomium globosum ...
Jianzhao Qi   +4 more
doaj   +1 more source

Preparative Isolation of Antimycobacterial Shoreic Acid from by High Speed Countercurrent Chromatography

open access: yesNatural Product Communications, 2008
High speed countercurrent chromatography (HSCCC) was used to isolate the dammarane type triterpene shoreic acid from the dichloromethane extract of leaves of Cabralea canjerana , which showed activity against Mycobacterium tuberculosis .
Gilda G. Leitão   +7 more
doaj   +1 more source

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.)

open access: yesMolecules, 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   +5 more
doaj   +1 more source

Usos etnofarmacológicos, evidencias y valoración científica de Lippia origanoides Kunt. Especie utilizada en la medicina tradicional indígena americana [PDF]

open access: yes, 2019
Introducción: Las comunidades indígenas de Centroamérica y Sudamérica han utilizado plantas medicinales con fines terapéuticos y sagrados basados en sus cosmovisiones.
Ponce Valle, Antonio José
core  

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

open access: yesJournal 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   +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

open access: yesBIO 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

Isolation of Herbicidal Substance, α-terthienyl, from the Root of Flaveria bidentis using HSCCC and HPLC

open access: yesInternational Journal of Agriculture and Biology, 2015
Flaveria bidentis (L.) Kuntze is a serious invasive plant with allelopathic properties in Hebei, China. To obtain the herbicidal substance from the root extracts of F. bidentis effectively and rapidly, the isolation and purification method was optimized by using high-speed counter-current chromatography (HSCCC).
Jing-Qian Huo   +4 more
openaire   +1 more source

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