抄録
In recent years, eco-friendly washing was spread and neutralization of the washing bath and reduction of bath ratio is in progress. Since there is a possibility that dye transfer occurs during washing, decolorization reaction of dye catalyzed by peroxidase was examined to correspond to eco-friendly washing.
Decolorization conditions that dye transfer of Acid Blue 113 and Direct Blue 71 using 3.4 × 10-8 M horseradish peroxidase (HRP) doesn't occur were pH 7.0 Carmody buffer, over 2.5 × 10-5 M hydrogen peroxide and over 1.0 × 10-5 M p-iodophenol. Decolorization reaction of both dyes with sodium percarbonate is conventional bleaching agent didn't proceed substantially. So, practical effectiveness of HRP as a detergent added enzyme was confirmed. When the surfactant concentration was cmc × 1.5, decolorization rate constant was reduced from 10% to 40%.
