کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5354589 | 1503596 | 2016 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Immobilization of flavan-3-ols onto sensor chips to study their interactions with proteins and pectins by SPR
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کلمات کلیدی
(−)epicatechinDP2PLPEPIATRCATITC(+)-catechin - (+) - کاتچینBSA - BSAbovine serum albumin - آلبومین سرم گاوAttenuated total reflection - بازتاب کل انعکاس یافتهSurface plasmon resonance - تشدید پلاسمون سطحیSPR - تشدید پلاسمون سطحیdegree of polymerization - درجه پلیمریزاسیونresonance units - واحد رزونانسProcyanidin - پروسیانیدینPolyphenol - پلی فنلPoly-l-proline - پلی-ال-پرولینPolysaccharide - چندقندی ها یا پلیساکاریدهاIsothermal titration calorimetry - کالری سنجی تیتاسیون ایزوترمالcarboxymethyl dextran - کربوکسی متیل دکستران
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Interactions between plant polyphenols and biomacromolecules such as proteins and pectins have been studied by several methods in solution (e.g. isothermal titration calorimetry, dynamic light scattering, nuclear magnetic resonance and spectrophotometry). Herein, these interactions were investigated in real time by Surface Plasmon Resonance (SPR) analysis after immobilization of flavan-3-ols onto a sensor chip surface. (â)-epicatechin, (+)-catechin and flavan-3-ol oligomers with an average degree of polymerization of 2 and 8 were chemically modified using N-(2-(tritylthio)ethyl)propiolamide in order to introduce a spacer unit onto the catecholic B ring. Modified flavan-3-ols were then immobilized onto a carboxymethylated dextran surface (CM5). Immobilization was validated and further verified by evaluating flavan-3-ol interaction with bovine serum albumin (BSA), poly-l-proline or commercial pectins. BSA was found to have a stronger association with monomeric flavan-3-ols than oligomers. SPR analysis of selected flavan-3-ols immobilized onto CM5 sensor chips showed a stronger association for citrus pectins than apple pectins, regardless of flavan-3-ol degree of polymerization.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 371, 15 May 2016, Pages 512-518
Journal: Applied Surface Science - Volume 371, 15 May 2016, Pages 512-518
نویسندگان
Aude A. Watrelot, Dong Tien Tran, Thierry Buffeteau, Denis Deffieux, Carine Le Bourvellec, Stéphane Quideau, Catherine M.G.C. Renard,