Bulletin of the Faculty of Life and Environmental Science Shimane University

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Bulletin of the Faculty of Life and Environmental Science Shimane University 13
2008-09-30 発行

3-デオキシグルコソンによるメイラード反応由来ラジカルの検出と性質

Detection and Characterization of Radicals Derived from 3-Deoxyglucosone in Maillard Reaction
Kobayashi, Takayuki
Yasuda, Takayuki
Shibata, Hitoshi
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Description
3-Deoxygluconsne(3-DG), an α, β-dicarbonyl compounds in phosphate buffer, pH7.4 with amino acids, produced different ESR spectra depending on the added amino acids, by the use of 3,5-dibromo-4-nitrosobenzenesulfonic acid(DBNBS)which is suitable for spin trapping of carbon centered radicals. 3-DG is known to polymerize protein, but added Lys promoted the dimerization of lysozyme by the involvement of radical generation. As the formation and accumulation of α, β-dicarbonyl compounds is known as carbonyl stress, we proposed that these radicals derived from amino acid via Maillard reaction may contribute oxidative stress, main part of carbonyl stress.