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Generation of Hydroxyl Radicals from Polymer Containing Reducing Sugar Branches in the Presence of Hydrogen Peroxide
Author(s) -
Kitagawa Masaru,
Fan Hong,
Konagaya Noriko,
Shibatani Shigeo,
Kashimura Naoki,
Kurane Ryuichiro,
Tokiwa Yutaka
Publication year - 2001
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/1521-3935(20010101)202:2<231::aid-macp231>3.0.co;2-0
Subject(s) - radical , hydrogen peroxide , chemistry , hydroxyl radical , peroxide , polymer chemistry , moiety , superoxide dismutase , photochemistry , radical initiator , polymer , organic chemistry , antioxidant , polymerization
The generation of hydroxyl radicals from poly(6‐ O ‐vinyladipoyl‐ D ‐glucose) [poly(VAG)] in the presence of hydrogen peroxide was detected by oxidation of p ‐nitrosodimethylaniline ( p ‐NDA). Several hydroxyl radical scavengers inhibited the reaction, but inhibition by superoxide dismutase (SOD) was low. This suggests that hydroxyl radicals from Harber‐Weiss reaction made relatively small contributions to this reaction, and that the enediol moiety of reducing sugar branches in poly(VAG) reacted with hydrogen peroxide to produce hydroxyl radicals. The polymer degraded to a low molecular weight material after reaction with hydrogen peroxide.