Results 81 to 90 of about 1,089 (173)

Separation of avermectin components from Streptomyces avemitilis extraction using high-speed counter-current chromatography [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2013
Three compounds of antibiotics-avermectins from fertilizing product of Streptomyces avemitilis are achieved by high-speed counter-current chromatography (HSCCC) with a two-phase solvent system composed of n-hexane-ethyl acetate-methanol-water (6:
Su Weike, Hou Zhuoni, Liang Xianrui
doaj   +1 more source

Preparative separation of flavonoids from the medicinal plant Davilla elliptica St. Hill. by high-speed counter-current chromatography

Química Nova, 2006
High-speed counter-current chromatography (HSCCC) is a major tool for the fast separation of natural products from plants. It was used for the preparative isolation of the flavonoid monoglucosides present in the aerial parts of the Davilla elliptica St ...
Rinaldo Daniel, Silva Marcelo Aparecido, Rodrigues Clenilson Martins, Calvo Tamara Regina, Sannomiya Miriam, Santos Lourdes Campaner dos, Vilegas Wagner, Kushima Hélio, Hiruma-Lima Clélia Akiko, Brito Alba Regina Monteiro de Souza   +9 more
doaj   +3 more sources

A review of the hydrodynamics of high-speed counter current chromatography [PDF]

This review outlines the current understanding of the flow behavior in high-speed counter-current chromatography (HSCCC). HSCCC has seen huge progress in modeling and predicting flow behavior, yet it still is not fully understood from a hydrodynamic ...
Vigil, Matthew J.
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Assessing the response of plant flavonoids to UV radiation : an overview of appropriate techniques [PDF]

, 2014
Flavonoids are a large group of plant secondary metabolites that are present in most plants, and are vital for plant growth, development and protection. Among the many functions of these compounds is their contribution to stress amelioration.
Agati, Giovanni, Jansen, Marcel A. K., Julkunen-Tiitto, Riitta, Nenadis, Nikolaos, Neugart, Susanne, Nybakken, Line, Robson, Matthew, Vepsalainen, Jouko, Winkler, Barbro, Zipoli, Gaetano   +9 more
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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

Propriedades químicas e farmacológicas de mangiferina: um composto bioativo de manga (Mangifera indica L.) [PDF]

, 2019
Introdução; Estrutura e propriedades químicas; Teores de mangiferina; Atividades farmacológicas; Produtos baseados em mangiferina.bitstream/CPATSA-2009-09/40766/1/SDC218 ...
CANUTO, K. M.
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Preparative separation and purification of sesquiterpenoids from tussilago farfara l. by high-speed counter-current chromatography

Química Nova, 2011
Preparative high-speed counter-current chromatography (HSCCC) was successfully applied for separation and purification of sesquiterpenoids from an extract of Tussilago farfara L.
Daijie Wang, Lei Fang, Xiao Wang, Jiying Qiu, Luqi Huang   +4 more
doaj   +1 more source

Separation of Non-alkaloid Toxin Lignans and New Flavonoid from Himalayan Mayapple (Podophyllum Hexandrum Royle) by High-Speed Counter-Current Chromatography and Their Anti-inflammatory Activity Evaluation

Pakistan Journal of Analytical & Environmental Chemistry
Podophyllum hexandrum Royle (Berberidaceae) is reported from the Himalayan region and China. It is also known as the Himalayan Mayapple and is reported for the treatment of constipation, fever, jaundice, liver disorders, etc.
Iftikhar Ali, Shahid Aziz, Marzia Zahra, Yan Mu, Erum Dilshad, Meher Ali, Xiao Wang   +6 more
doaj   +3 more sources

Extraction and isolation of dictamnine, obacunone and fraxinellone from Dictamnus dasycarpus Turcz. by supercritical fluid extraction and high-speed counter-current chromatography

Química Nova, 2012
Supercritical fluid extraction was used to extract active compounds from the Chinese traditional medicinal D. dasycarpus under the pressure of 30 MPa and temperature of 45 ºC.
Daijie Wang, Yunliang Lin, Xiaojing Lin, Yanling Geng, Xiao Wang, Jinjie Zhang, Jiying Qiu   +6 more
doaj   +1 more source

Development of an efficient method for isolation and purification of bioactive Compounds from panax ginseng and rhodiola rosea using high performance counter current chromatography [PDF]

, 2012
This Thesis was submitted for the degree of Master of Philosophy and awarded by Brunel University.Traditional Chinese medicine has developed for several thousands of years and accumulated an abundant amount of human pharmacological information and ...
Li, Yi
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