期刊
BIOCATALYSIS AND BIOTRANSFORMATION
卷 22, 期 5-6, 页码 325-330出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/10242420400025752
关键词
hydroxyl radicals; ligninolytic enzymes; Pleurotus ostreatus; succinic acid; synthetic dyes; white-rot fungi
Decolorization of synthetic dyes was performed using cultures of white-rot fungi producing ligninolytic enzymes and radical-generating reactions that could be involved in the mechanism of fungal decolorization. Among the white-rot fungi tested, Pleurotus ostreatus exhibited the highest decolorization rates, and also the highest production of laccase and Mn-peroxidase. P. ostreatus strain f6 gave 69% decolorization of Eosin Yellowish, 96% of Evans Blue, 75% of Phenol Red (all at 1 mm) and 88% of Poly B-411 (20 ppm) during a 14-day treatment. Treatment with Cu/succinic acid/H2O2 resulted in 96% decolorization of Evans Blue and Poly B-411 within 24 h. However, only 48% and 2% decolorization was achieved with Phenol Red and Eosin Yellowish, respectively. Similar decolorization rates were also obtained when Cu was replaced with Co. The results show that treatment of dye-containing solutions with both fungal cultures and biomimetic catalytic reactions results in decolorization.
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