Effects of glucose and NH4+ concentrations on sequential dye decoloration by Trametes versicolor

Swamy, J. Anantha; Ramsay, J. O.

doi:10.1016/s0141-0229(99)00058-7

Cited by 85 publications

(43 citation statements)

References 29 publications

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“…The other study showed that H 2 O 2 was usually formed by another enzyme, glucose peroxidase, which was bound on the cell wall when glucose was utilize by fungi as the major carbon source in the culture [11]. Our result is also similar with Hofrichter's that assuming on the mechanism of MnP catalysis and other results about H 2 O 2 production [14].…”

Section: Hydrogen Peroxide Productionsupporting

confidence: 89%

“…In the previous studies, the basidiomycetes could not utilize the dye as a sole carbon and energy source for growth of fungi and production of enzyme. Glucose played as a cometabolic substrate for dye decolorization, that was correponding with the results obtained in white rot basidiomycetes by other researcher [10,11]. On the other hand, in most white rot basidiomycetes, glucose or other carbon sources supplied an essential substrate for the production of enzyme and growth of the cell, in which the production of ligninolytic enzyme was performed throughout their secondary metabolism and was effected by limited nutrient stage.…”

Section: Relationship Between Glucose Consumption and Rb5 Decolorizationsupporting

confidence: 83%

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Effects of Glucose on the Reactive Black 5 (RB5) Decolorization by Two White Rot Basidiomycetes

Hadibarata¹,

Yusoff²,

Aris³

et al. 2011

itbj.sci.

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Abstract. The capacities of glucose in the decolorization process of an azo dye, Reactive Black 5 (RB5), by two white rot basidiomycetes, Pleurotus sp. F019 and Trametes sp. F054 were investigated. The results indicated that the dye degradation by the two fungi was extremely correlated with the presence of glucose in the culture and the process of fungi growth. Decolorization of 200 mg dye/l was increased from 62% and 69% to 100% within 20-25 h with the increase of glucose from 5 to 15 g/l, and the activity of manganese dependent peroxidase (MnP) increased by 2-9 folds in this case. Hydrogen peroxide of 0.55 mg/l and 0.43 mg/l were detected in 10 h in Pleurotus sp. F019 and Trametes sp. F054 cultures.

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Section: Hydrogen Peroxide Productionsupporting

confidence: 89%

Section: Relationship Between Glucose Consumption and Rb5 Decolorizationsupporting

confidence: 83%

Effects of Glucose on the Reactive Black 5 (RB5) Decolorization by Two White Rot Basidiomycetes

Hadibarata¹,

Yusoff²,

Aris³

et al. 2011

itbj.sci.

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“…In our previous report, the yeasts could not use the dye as a sole carbon and energy source for yeast growth and MnP production (Yang et al, 2005). Glucose acted as a cometabolic substrate for dye degradation, which was similar with the results obtained in white rot fungi by other authors (Adosinda et al, 2001;Swamy and Ramsay, 1999). However, in most white rot fungi, glucose or other carbon sources provided a necessary substrate for cell growth and enzyme production, in which the enzyme production was during their secondary metabolism and was induced by limited nutrient level.…”

Section: Correlations Between Glucose Utilization and Dye Decolorizationsupporting

confidence: 89%

“…According to the literature (Swanmy and Ramsay, 1999), H 2 O 2 was normally produced by another enzyme, glucose peroxidase, which was attached on the cell wall when glucose was used as the main carbon source in the culture (Swamy and Ramsay, 1999). Our results strongly supported Hofrichter's supposing on mechanism of MnP catalysis and Swamy's view about H 2 O 2 production (Hofrichter, 2002).…”

Section: Effects Of Glucose Concentration On Mnp Production and Colorsupporting

confidence: 85%

Effects of glucose on the decolorization of Reactive Black 5 by yeast isolates

Yang

Ling-xia

Yang

et al. 2008

Journal of Environmental Sciences

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The cometabolic roles of glucose were investigated in decolorization of an azo dye, Reactive Black 5, by yeast isolates, Debaryomyces polymorphus and Candida tropicalis. The results indicated that the dye degradation by the two yeasts was highly associated with the yeast growth process and glucose presence in the medium. Color removal of 200 mg dye/L was increased from 76.4% to 92.7% within 60 h to 100% within 18-24 h with the increase of glucose from 5 to 10 g/L, although the activity of manganese dependent peroxidase (MnP) decreased by 2-8 times in this case. Hydrogen peroxide of 233.3 µg/L was detected in 6 h in D. polymorphus culture. The cometabolic functions of glucose and hydrogen peroxide could be also confirmed by the further color removals of 95.8% or 78.9% in the second cycle of decolorization tests in which 7 g glucose/L or 250 µg H 2 O 2 /L was superadded respectively together with 200 mg dye/L.

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“…En outre, l'activité de la lignine peroxydase, meilleure à un pH acide (pH = 4,5 à 5), exige une acidification de l'eau usée qui est généralement très alcaline. outre un coût d'acidification élevé, cela inhibe la croissance des autres microorganismes utiles, tels que les bactéries, surtout si le traitement est réalisé avec un consortium de microorganismes (SWAMy et RAMSAy, 1999). Par ailleurs, d'autres polluants de l'eau usée, particulièrement les composés aromatiques, peuvent interférer avec la dégradation fongique des colorants.…”

Section: Traitements Biologiques 331 Décoloration Par Les Champignonsunclassified

Les colorants textiles sources de contamination de l’eau : CRIBLAGE de la toxicité et des méthodes de traitement

Mansour¹,

Boughzala

Dridi

et al. 2011

rseau

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Les colorants sont largement utilisés dans les imprimeries, les produits alimentaires, cosmétiques et cliniques, mais en particulier dans les industries textiles pour leur stabilité chimique et la facilité de leur synthèse et leur variété de couleurs. Cependant, ces colorants sont à l’origine de la pollution une fois évacués dans l’environnement. La production mondiale des colorants est estimée à plus de 800 000 t•an-1 et les colorants azoïques sont majoritaires et représentent 60-70 %. Compte tenu de la composition très hétérogène de ces derniers, leur dégradation conduit souvent à la conception d’une chaîne de traitement physique-chimique et biologique assurant l’élimination des différents polluants par étapes successives. Dés études ont montré que plusieurs colorants azoïques sont toxiques et mutagènes et le traitement biologique de ces colorants semble présenter un intérêt scientifique majeur. Les traitements physico-chimiques communs (adsorption, coagulation/floculation, précipitation etc.) sont couramment utilisés pour les effluents industriels. Malgré leur rapidité, ces méthodes se sont avérées peu efficaces compte tenu des normes exigées sur ces rejets. Le traitement biologique constitue une alternative fiable; en effet, plusieurs microorganismes sont capables de transformer les colorants azoïques en sous-produits incolores. Les bactéries dégradent les colorants azoïques en deux étapes : un clivage de liaison azo, par l’intermédiaire de l’azoréductase, suivi d’une oxydation des amines aromatiques formées lors de la première étape. L’azoréduction constitue alors une étape clé du traitement des effluents chargés de ces colorants.Dyes are widely used for industrial, printing, food, cosmetic and clinical purposes as well as textile dyeing because of their chemical stability, ease of synthesis, and versatility. Their stability, however, causes pollution once the dyes are released into the environment in effluents. More than 800,000 tons of dyes are annually produced worldwide, of which 60 to 70% are azo dyes. Considering the heterogeneous composition of these latter dyes, their degradation usually requires a chain of physical, chemical and biological treatments assuring the elimination of different pollutants in successive steps. In addition, some azo dyes are toxic and mutagenic and thus the biological treatment of these dyes is now of major scientific interest. Physical-chemical treatments (adsorption, coagulation/flocculation precipitation, etc.) are usually used for industrial effluents. In spite of their rapidity, these methods have turned out to be ineffective in attaining the standards required for these discharges. As a viable alternative, biological processes are receiving increasing interest owing to their cost effectiveness and their ability to produce less sludge. It has been found that some microorganisms can transform azo dyes into colourless products. Bacterial degradation of azo dyes is often initiated by an enzymatic biotransformation step that involves cleavage of azo linkages with the aid of...

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Effects of glucose and NH4+ concentrations on sequential dye decoloration by Trametes versicolor

Cited by 85 publications

References 29 publications

Effects of Glucose on the Reactive Black 5 (RB5) Decolorization by Two White Rot Basidiomycetes

Effects of Glucose on the Reactive Black 5 (RB5) Decolorization by Two White Rot Basidiomycetes

Effects of glucose on the decolorization of Reactive Black 5 by yeast isolates

Les colorants textiles sources de contamination de l’eau : CRIBLAGE de la toxicité et des méthodes de traitement

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