کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6289538 | 1301752 | 2011 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of NaCl and Na2SO4 on the kinetics and dye decolorization ability of crude laccase from Ganoderma lucidum
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کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری
علوم محیط زیست
علوم زیست محیطی (عمومی)
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چکیده انگلیسی
In a solid state medium using yellow passion fruit waste as substrate, the basidiomycete Ganoderma lucidum produced a laccase as the main ligninolytic enzyme. This crude enzyme presented Michaelian behavior with both substrates tested, namely 3-ethylbenzthiazoline-6-sulphonic acid (ABTS) and the anthraquinone dye remazol brilliant blue R (RBBR). The KM's for these substrates were, respectively, 0.232Â ÃÂ 10â3 and 0.602Â ÃÂ 10â3Â M. The actions of NaCl and Na2SO4, two important salts usually found in textile wastewaters, were investigated. The enzyme was inhibited by NaCl, but not by Na2SO4. Inhibition by NaCl was of the mixed type with two different inhibition constants. The enzyme was able to completely decolorize RBBR in the presence of 1.0Â M Na2SO4 and 50% decolorization was found in the presence of 0.1Â M NaCl. Such properties certainly make the enzyme a good agent for textile dye effluent treatment considering the fact that wastewaters of this industry usually contain high concentrations of NaCl and Na2SO4.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Biodeterioration & Biodegradation - Volume 65, Issue 2, March 2011, Pages 340-344
Journal: International Biodeterioration & Biodegradation - Volume 65, Issue 2, March 2011, Pages 340-344
نویسندگان
Adriana Zilly, Jaqueline da Silva Coelho-Moreira, Adelar Bracht, Cristina Giatti Marques de Souza, Anne Elise Carvajal, Eloá Angélica Koehnlein, Rosane Marina Peralta,