Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: EC:1.10.3.2 (laccase)
 4,656 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

This study reported the decolorization of hazardous xanthenes dye, Rhodamine B by the Laccase Mediator System (LMS). Seven redox mediators were investigated in the mediators-assisted lacase catalyze oxidation reactions. Among redox mediators tested, 2, 2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS) was the best one which gave the highest Rhodamine B decolorization for more than 80% within 48 h while only 20% achieved with no mediator added. In the laccase-ABTS mediator system, the best molar ratio of dye/mediator was 1:10 and dye/enzyme ratio was 0.5 micromol U(-1). The optimum conditions for Rhodamine B decolorization were at pH 4.0-5.0 and temperature 35-40 degrees C. The laccase-ABTS system could be a promising biotechnology developed for treatment of textile waste waters containing Rhodamine B.
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PMID:Mediator-assisted rhodamine B decolorization by Tramates versicolor laccase. 1963 86

Dye decolorization is currently measured by the reduction of dye absorption, based on its linear optical properties in solution. However, this method is not suitable for high dye concentrations with linear attributes in the absorption spectra. In this work, nonlinear optical properties are used to study dye decolorization of Crocin and Rhodamine B treated with a bacterial laccase. For this purpose, the Z-scan was used to obtain the nonlinear refractive indices and nonlinear absorption coefficient of Rhodamine B and Crocin in the presence and absence of the bacterial laccase enzyme. The results showed that nonlinear optical properties could be used to study dye decolorization in solutions.
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PMID:Z-Scan and Absorption Study of Crocin and Rhodamine B Decolorization by Bacterial Laccase. 3007 26