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https://hdl.handle.net/2440/62254
Type: | Journal article |
Title: | Host-guest complexation of apple antioxidant quercetin by linked β-cyclodextrin dimer |
Other Titles: | Host-guest complexation of apple antioxidant quercetin by linked [beta]-cyclodextrin dimer |
Author: | Nguyen, H. Pham, D. Lincoln, S. |
Citation: | Asian Journal of Chemistry: an international peer reviewed research journal of chemistry, 2011; 23(1):116-118 |
Publisher: | Chemic Publishing Company |
Issue Date: | 2011 |
ISSN: | 0970-7077 |
Statement of Responsibility: | Hoa-Du Nguyen, Duc-Truc Pham and Stephen F. Lincoln |
Abstract: | In aqueous phosphate buffer at pH 7.0 (3.3 % ethanol, I = 0.10 mol dm -3 at 298.2 K) quercetin forms host-guest complexes with β-cyclodextrin (βCD) and N,N'-bis(6A-deoxy-6 A-β-cyclodextrinyl)urea (66βCD2ur) of stoichiometry βCD.Qc and 66βCD2ur.Qc, the analogous K 1 = 537 and 1901 dm3 mol-1, respectively, showing a good cooperative binding of two annuli of the dimer to the guest. The complexation of quercetin (Qc) by β-cyclodextrin (βCD) and N,N'-bis(6A-deoxy-6A-b-cyclodextrin) urea (66βCD2ur) in D2O was studied by 2D ROESY 1H NMR provided evidence for complexation of quercetin into βCD annuli. The models of complexes were constructed and energy minimized. |
Keywords: | Host-guest complexation Cyclodextrin Quercetin Fluorescence ROESY |
Rights: | Copyright © 2010 Asian Journal of Chemistry |
Description (link): | http://www.asianjournalofchemistry.co.in/User/SearchArticle.aspx |
Appears in Collections: | Aurora harvest Chemistry publications Environment Institute publications |
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