Document Detail


Direct extraction of specific pharmacophoric flavonoids from gingko leaves using a molecularly imprinted polymer for quercetin.
MedLine Citation:
PMID:  11762756     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
A new straightforward approach to extract active components from Chinese traditional herb was reported by using a molecularly imprinted polymer (MIP) as the sorbent material. The MIP was prepared using quercetin, a typical active compound of the flavonoid family in gingko leaves as the template. Acrylamide was used as the functional monomer and two polar solvent tetrahydrofuran was used as the porogen. Afterwards, the polymer was evaluated by chromatographic analysis. It exhibited high selectivity for quercetin and good affinity to its structural analogues. Specific binding amount of quercetin on the MIP in the solvent methanol was 12 microg/g polymer by the cartridge test. The MIP cartridge could directly trap a specific class of compounds including quercetin and kaempferol from the hydrolyzate of gingko leaves. The result demonstrated the possibility of direct extraction of certain pharmacophoric constituents from herb by MIP technology. The compounds extracted were confirmed by time-of-flight mass spectrometry.
Authors:
J Xie; L Zhu; H Luo; L Zhou; C Li; X Xu
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of chromatography. A     Volume:  934     ISSN:  0021-9673     ISO Abbreviation:  J Chromatogr A     Publication Date:  2001 Nov 
Date Detail:
Created Date:  2001-12-12     Completed Date:  2002-05-02     Revised Date:  2009-01-15    
Medline Journal Info:
Nlm Unique ID:  9318488     Medline TA:  J Chromatogr A     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  1-11     Citation Subset:  IM    
Affiliation:
Beida Yangshengtang Joint Laboratory for Natural Products, College of Chemistry and Molecular Engineering, Peking University, Beijing, China.
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MeSH Terms
Descriptor/Qualifier:
Chromatography, High Pressure Liquid / methods
Flavonoids / isolation & purification*
Ginkgo biloba / chemistry*
Plant Leaves / chemistry*
Polymers / chemistry*
Quercetin / chemistry*
Sensitivity and Specificity
Spectrometry, Mass, Electrospray Ionization
Chemical
Reg. No./Substance:
0/Flavonoids; 0/Polymers; 117-39-5/Quercetin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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