Screening of static culture and comparison of batch and continuous culture for the textile dye biological decolorization by Phanerochaete chrysosporium

Urra, Johana; Sepúlveda, L.; Contreras, Elsa Galarza; Palma, C.

doi:10.1590/s0104-66322006000300002

Cited by 17 publications

(10 citation statements)

References 29 publications

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“…In this context, studied developed by Urra et al (2006) showed that the decolourization of 100 mg L -1 of RO165 by P. chrysosporium was 91% after 15 days, and they suggested that RO165 was degraded by the oxidative action of MnP present in the medium concordant with our result. Baldrian and Šnajdr (2006) evaluated the decolourization of azo dyes by different white-rot fungi, demonstrating that the fastest degradation of Poly B-411 was performed by the strains with high levels of Lac and MnP.…”

Section: Decolourization Of Ro 165 By Pellets Of a Discolorsupporting

confidence: 90%

“…The advantage of white-rot fungi (WRF) to degrade azo dyes is related with its oxidative mechanism that avoid the formation of anilines formed by reductive cleavage of azo dyes by bacteria (Chung and Stevens, 1993) Diverse technologies and reactors have demonstrated the capacity of microorganisms, particularly WRF, to decolorize and remove a wide variety of structurally diverse pollutants including synthetic dyes (Rodriguez-Couto et al 2003;Rubilar et al 2012). These fungi possess extracellular ligninolytic enzymes such as laccase and peroxidases and due to the relative lack of specificity have been used to degrade a wide range of organic compounds like dyes (Ramsay et al 2005;Urra et al 2006;Eichlerová et al 2007;Hu et al 2009;Grassi et al 2011). …”

Section: Introductionmentioning

confidence: 99%

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Selection of white-rot fungi to formulate complex and coated pellets for Reactive Orange 165 decolourization

Elgueta¹,

Rubilar²,

Lima³

et al. 2012

Electron. J. Biotechnol.

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Six strains of white-rot fungi isolated from southern Chile were evaluated for their ergosterol/biomass correlation and ligninolytic potential in solid medium to formulate pellets for Reactive Orange 165 (RO165) decolourization. The fungus Anthracophyllum discolor was selected to formulate complex pellets (fungal mycelium, sawdust, and activated carbon), coated pellets (complex pellet + alginate) and simple pellets (fungal mycelium). The activity of ligninolytic enzymes (laccase, manganese peroxidase, manganese-independent peroxidase, and lignin peroxidase) was evaluated in both the complex and coated pellets in modified Kirk medium, and the morphology of the pellets was studied using scanning electron microscopy (SEM). Complex pellets of A. discolor showed a higher enzymatic production mainly MnP (38 U L -1 at day 15) compared to coated and simple pellets. Examinations using SEM showed that both pellets produced a black core that was entrapped by a layer of fungal mycelium. Decolourization of RO165 was demonstrated with all the pellets formulated. However, the highest and fastest decolourization was obtained with complex pellets (100% at day 8). Therefore, complex pellets of A. discolor can be used for the biological treatment of wastewater contaminated with RO165.

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Section: Decolourization Of Ro 165 By Pellets Of a Discolorsupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Selection of white-rot fungi to formulate complex and coated pellets for Reactive Orange 165 decolourization

Elgueta¹,

Rubilar²,

Lima³

et al. 2012

Electron. J. Biotechnol.

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“…The mycelium was homogenized and inoculated in a 10% (w/v) proportion in the free mycelium experiments and 13.3% (w/v) proportion in the immobilized fungi experiments (Urra et al 2006). The liquid culture medium was based on a wheat straw (20%; v/v), MnSO4 (40 mg/L), sodium lactate (20 mM), and adjusted to pH 4.5 with a 30% HCl solution.…”

Section: Methodsmentioning

confidence: 99%

Enzyme production by immobilized Phanerochaete chrysosporium using airlift reactor

et al. 2014

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Enzyme production by immobilized Phanerochaete chrysosporium was evaluated in airlift bioreactor and agitated cultures. Free mycelium and immobilized mycelium on alginate beads were tested in the decolourization of 50 and 500 mg/L of Remazol Brilliant Blue R. Dye concentration did not inhibit the fungi development in all tests. In addition, high decolourization percentage of dye was found with free mycelium (99%) in agitated flasks and with immobilized mycelium in airlift (98%). However, decolourization period by immobilized mycelium (120 h) was greater than that by the free mycelium (14 h). Important manganese peroxidase, lignine peroxidase and laccase activities were identified in decolourization process. Manganese peroxidase appeared to be promoted by high dye concentrations during the treatment with immobilized mycelium, but this enzyme was not detected with free mycelium in airlift. Bioreactor prompted also laccase and lignine peroxidase actions in both tests; free mycelium registered a maximum laccase action of 31.569 × 10 3 U/L in 70 h, whereas immobilized mycelium registered 1.680 × 10 3 U/L in 170 h, while lignine peroxidase secretion by free P. chrysosporium was higher (1.300 × 10 3 U/L) than immobilized mycelium (1.250 × 10 3 U/L). Maximum laccase activity coincided with the maximum percentage of decolourization, however, high peroxidase activity was identified from the start of dye treatment.

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“…In batch cultures with Acid Black 1 and Reactive Black 5 a significant increment in primary post-metabolism biomass was observed. For Acid Black 1 and Reactive Black 5, it was possible to explore the response of the continuous system during 32-47 d, with concentrations between 25 and 400 mg l -1 , obtaining decolorization greater than 70% for 400 mg l -1 (Urra et al 2006). A partially purified MnP from Bjerkandera adusta was tested for the decolorization of several artificial dye baths.…”

Section: Peroxidasesmentioning

confidence: 99%

Peroxidase mediated decolorization and remediation of wastewater containing industrial dyes: a review

Husain

2009

Rev Environ Sci Biotechnol

205

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In this article an effort has been made to review literature based on the role of peroxidases in the treatment and decolorization of a wide spectrum aromatic dyes from polluted water. Peroxidases can catalyze degradation/transformation of aromatic dyes either by precipitation or by opening the aromatic ring structure. Peroxidases from plant sources; horseradish, turnip, tomato, soybean, bitter gourd, white radish and Saccharum uvarum and microbial sources; lignin peroxidases, manganese peroxidases, vanadium haloperoxidases, versatile peroxidases, dye decolorizing peroxidases have been employed for the remediation of commercial dyes. Soluble and immobilized peroxidases have been successfully exploited in batch as well as in continuous processes for the treatment of synthetic dyes with complex aromatic molecular structures present in industrial effluents at large scale. However, recalcitrant dyes were also decolorized by the action of peroxidases in the presence of redox mediators.

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Screening of static culture and comparison of batch and continuous culture for the textile dye biological decolorization by Phanerochaete chrysosporium

Cited by 17 publications

References 29 publications

Selection of white-rot fungi to formulate complex and coated pellets for Reactive Orange 165 decolourization

Selection of white-rot fungi to formulate complex and coated pellets for Reactive Orange 165 decolourization

Enzyme production by immobilized Phanerochaete chrysosporium using airlift reactor

Peroxidase mediated decolorization and remediation of wastewater containing industrial dyes: a review

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