Covalent Insertion of Antioxidant Molecules on Chitosan by a Free Radical Grafting Procedure

被引：330

作者：

Curcio, Manuela ^{[1
]}

Puoci, Francesco ^{[1
]}

Iemma, Francesca ^{[1
]}

Parisi, Ortensia Ilaria ^{[1
]}

Cirillo, Giuseppe ^{[1
]}

Spizzirri, Umile Gianfranco ^{[1
]}

Picci, Nevio ^{[1
]}

机构：

[1] Univ Calabria, Dipartimento Sci Farmaceut, I-87036 Arcavacata Di Rende, CS, Italy

来源：

JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY | 2009年 / 57卷 / 13期

关键词：

Grafting; redox initiators; chitosan; antioxidant; GALLIC ACID; POLYMERIZATION; COMPLEX; CHITIN; GREEN;

D O I：

10.1021/jf900778u

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

In this work, the synthesis of gallic acid-chitosan and catechin-chitosan conjugates was carried out by adopting a free radical-induced grafting procedure. For this purpose, an ascorbic acid/hydrogen peroxide redox pair was employed as radical initiator. The formation of covalent bonds between antioxidant and biopolymer was verified by performing UV, FT-IR, and DSC analyses, whereas the antioxidant properties of chitosan conjugates were compared with that of a blank chitosan, treated in the same conditions but in the absence of antioxidant molecules. The good antioxidant activity shown by functionalized materials proved the efficiency of the reaction method.

引用

页码：5933 / 5938

页数：6

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