| Title | Covalent insertion of antioxidant molecules on chitosan by a free radical grafting procedure. | | Author(s) | Curcio M, Puoci F, Iemma F, Parisi OI, Cirillo G, Spizzirri UG, Picci N | | Institution | Dipartimento di Scienze Farmaceutiche, Università della Calabria, Edificio Polifunzionale, Arcavacata di Rende, CS 87036, Italy. | | Source | J Agric Food Chem 2009 Jul 8; 57(13):5933-8. | | Abstract | 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. | | Language | eng | | Pub Type(s) | Journal Article
Research Support, Non-U.S. Gov't
| | PubMed ID | 19566085 |
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