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Antioxidant Activity of Graft Chitosan Derivatives
Author(s) -
Sun Tao,
Xie Wenming,
Xu Peixin
Publication year - 2003
Publication title -
macromolecular bioscience
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.924
H-Index - 105
eISSN - 1616-5195
pISSN - 1616-5187
DOI - 10.1002/mabi.200390041
Subject(s) - chemistry , superoxide , antioxidant , chitosan , methacrylic acid , grafting , hydroxyl radical , nuclear chemistry , chemiluminescence , copolymer , organic chemistry , polymer chemistry , polymer , enzyme
Graft chitosan derivatives (CMCTS‐ g ‐MAAS and CMCTS‐ g ‐AAS) were prepared by the graft copolymerization of methacrylic acid sodium (MAAS) and acrylic acid sodium (AAS) onto the etherification product of chitosan‐carboxymethyl chitosan (CMCTS). Their antioxidant activity was estimated as superoxide anion scavengers by chemiluminescence techniques. The derivatives with low grafting percentages have a relatively low 50% inhibition concentration (IC 50 ), which could be related to the fact that they have different contents of hydroxyl and amino groups in the polymer chains.Superoxide radical scavenging activity of CMCTS‐ g ‐MAAS.