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[PMID]:28463583
[Au] Autor:Yang SO; Sodaneath H; Lee JI; Jung H; Choi JH; Ryu HW; Cho KS
[Ad] Endereço:a Department of Environmental Science and Engineering , Ewha Womans University , Seoul , Republic of Korea.
[Ti] Título:Decolorization of acid, disperse and reactive dyes by Trametes versicolor CBR43.
[So] Source:J Environ Sci Health A Tox Hazard Subst Environ Eng;52(9):862-872, 2017 Jul 29.
[Is] ISSN:1532-4117
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The mycoremediation has been considered as a promising method for decolorizing dye wastewater. To explore new bioresource for mycoremediation, a new white-rot fungus that could decolorize various dyes commonly used in textile industries was isolated, and its ligninolytic enzyme activity and decolorization capacity were characterized. The isolated CBR43 was identified as Trametes versicolor based on the morphological properties of its fruit body and spores, as well as through partial 18S rDNA gene sequences. Isolated CBR43 displayed high activities of laccase and Mn-dependent peroxidase, whereas its lignin peroxidase activity was relatively low. These ligninolytic enzyme activities in potato dextrose broth (PDB) medium were enhanced by the addition of yeast extract (1-10 g L ). In particular, lignin peroxidase activity was increased more than 5 times in the PDB medium amended with 10 g L of yeast extract. The CBR43 decolorized more than 90% of 200 mg L acid dyes (red 114, blue 62 and black 172) and reactive dyes (red 120, blue 4, orange 16 and black 5) within 6 days in the PDB medium. CBR43 decolorized 67% of 200 mg L acid orange 7 within 9 days. The decolorization efficiencies for disperse dyes (red 1, orange 3 and black 1) were 51-80% within 9 days. The CBR43 could effectively decolorize high concentrations of acid blue 62 and acid black 172 (500-700 mg L ). The maximum dye decolorization rate was obtained at 28°C, pH 5, and 150 rpm in the PDB medium. T. versicolor CBR43 had high laccase and Mn-dependent peroxidase activities, and could decolorize a wide variety of dyes such as acid, disperse and reactive textile dyes. This fungus had decolorizing activities of azo-type dyes as well as anthraquinone-type dyes. T. versicolor CBR43 is one of promising bioresources for the decolorization of textile wastewater including various dyes.
[Mh] Termos MeSH primário: Compostos Azo/análise
Benzenossulfonatos/análise
Complexos de Coordenação/análise
Naftalenossulfonatos/análise
Trametes/crescimento & desenvolvimento
Poluentes Químicos da Água/análise
Purificação da Água/métodos
[Mh] Termos MeSH secundário: Biodegradação Ambiental
Lacase/metabolismo
Peroxidases/metabolismo
Indústria Têxtil
Trametes/enzimologia
Águas Residuais/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Azo Compounds); 0 (Benzenesulfonates); 0 (Coordination Complexes); 0 (Naphthalenesulfonates); 0 (Waste Water); 0 (Water Pollutants, Chemical); 0 (acid black 172); EC 1.10.3.2 (Laccase); EC 1.11.1.- (Peroxidases); EC 1.11.1.13 (manganese peroxidase); Q1LIY3BO0U (2-naphthol orange)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171128
[Lr] Data última revisão:
171128
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170503
[St] Status:MEDLINE
[do] DOI:10.1080/10934529.2017.1316164


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[PMID]:28829786
[Au] Autor:Scarpari M; Reverberi M; Parroni A; Scala V; Fanelli C; Pietricola C; Zjalic S; Maresca V; Tafuri A; Ricciardi MR; Licchetta R; Mirabilii S; Sveronis A; Cescutti P; Rizzo R
[Ad] Endereço:Sapienza University, Dept. of Environmental Biology, P.le Aldo Moro 5, Roma, Italy.
[Ti] Título:Tramesan, a novel polysaccharide from Trametes versicolor. Structural characterization and biological effects.
[So] Source:PLoS One;12(8):e0171412, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Mushrooms represent a formidable source of bioactive compounds. Some of these may be considered as biological response modifiers; these include compounds with a specific biological function: antibiotics (e.g. plectasin), immune system stimulator (e,g, lentinan), antitumor agents (e.g. krestin, PSK) and hypolipidemic agents (e.g. lovastatin) inter alia. In this study, we focused on the Chinese medicinal mushroom "yun zhi", Trametes versicolor, traditionally used for (cit.) "replenish essence and qi (vital energy)". Previous studies indicated the potential activity of extracts from culture filtrate of asexual mycelia of T. versicolor in controlling the growth and secondary metabolism (e.g. mycotoxins) of plant pathogenic fungi. The quest of active principles produced by T. versicolor, allowed us characterising an exo-polysaccharide released in its culture filtrate and naming it Tramesan. Herein we evaluate the biological activity of Tramesan in different organisms: plants, mammals and plant pathogenic fungi. We suggest that the bioactivity of Tramesan relies mostly on its ability to act as pro antioxidant molecule regardless the biological system on which it was applied.
[Mh] Termos MeSH primário: Polissacarídeos/química
Polissacarídeos/farmacologia
Trametes/química
[Mh] Termos MeSH secundário: Configuração de Carboidratos
Cromatografia em Gel
Espectroscopia de Ressonância Magnética
Espectrometria de Massas por Ionização por Electrospray
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Polysaccharides)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171016
[Lr] Data última revisão:
171016
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170823
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0171412


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[PMID]:28670679
[Au] Autor:Lugsanangarm K; Nueangaudom A; Pianwanit S; Kokpol S; Nunthaboot N; Tanaka F; Taniguchi S; Chosrowjan H
[Ad] Endereço:Program of Chemistry, Faculty of Science and Technology, Bansomdejchaopraya Rajabhat University, Bangkok, 10600, Thailand.
[Ti] Título:Dynamics of the protein structure of T169S pyranose 2-oxidase in solution: Molecular dynamics simulation.
[So] Source:Proteins;85(10):1913-1924, 2017 Oct.
[Is] ISSN:1097-0134
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Pyranose 2-oxidase (P2O) from Trametes multicolor contains FAD as cofactor, and forms a tetramer. The protein structure of a mutated P2O, T169S (Thr169 is replaced by Ser), in solution was studied by means of molecular dynamics simulation and analyses of photoinduced electron transfer (ET) from Trp168 to excited isoalloxazine (Iso*), and was compared with wild type (WT) P2O. Hydrogen bonding between Iso and nearby amino acids was very similar as between T169S and WT protein. Distances between Iso and Tyr456 were extremely heterogeneous among the subunits, 1.7 (1.5 in WT) in subunit A (Sub A), 0.97 (2.2 in WT) in Sub B, 1.3 (2.1 in WT) in Sub C, 1.3 nm (2.0 in WT) in Sub D. Mean values of root of mean square fluctuation over all residues were greater by four times than those in WT. This suggests that the protein structure of T169S is much more flexible than that of WT. Electrostatic (ES) energies between Iso anion in one subunit and ionic groups in the entire protein were evaluated. It was found that more than 50% of the total ES energy in each subunit is contributed from other subunits. Reported fluorescence decays were analyzed by a method as WT, previously reported. Electron affinities of Iso* in T169S were appreciably higher than those in WT. Static dielectric constants near Iso and Trp168 were also quite higher in T169S than those in WT.
[Mh] Termos MeSH primário: Aminoácidos/química
Desidrogenases de Carboidrato/química
Conformação Proteica
Soluções/química
[Mh] Termos MeSH secundário: Aminoácidos/genética
Ligações de Hidrogênio
Simulação de Dinâmica Molecular
Trametes/química
Trametes/enzimologia
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Amino Acids); 0 (Solutions); EC 1.1.- (Carbohydrate Dehydrogenases); EC 1.1.3.10 (pyranose oxidase)
[Em] Mês de entrada:1710
[Cu] Atualização por classe:171016
[Lr] Data última revisão:
171016
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170704
[St] Status:MEDLINE
[do] DOI:10.1002/prot.25345


  4 / 563 MEDLINE  
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[PMID]:28658740
[Au] Autor:Llorca M; Badia-Fabregat M; Rodríguez-Mozaz S; Caminal G; Vicent T; Barceló D
[Ad] Endereço:Catalan Institute for Water Research (ICRA), H2O Building, Scientific and Technological Park of the University of Girona, Emili Grahit 101, 17003, Girona, Spain; Water and Soil Quality Research Group, Department of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, 08034, Barcelona, Spain.
[Ti] Título:Fungal treatment for the removal of endocrine disrupting compounds from reverse osmosis concentrate: Identification and monitoring of transformation products of benzotriazoles.
[So] Source:Chemosphere;184:1054-1070, 2017 Oct.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:The removal of 27 endocrine-disrupting compounds and related compounds (suspect effect) from a reverse osmosis concentrate using an alternative decontamination method based on a fungal treatment involving Trametes versicolor was assessed. In addition to chemical analysis, the toxicity of the treated water during the treatment was monitored using a bioluminescence inhibition test and estrogenic and anti-estrogenic tests. The compounds 1H-benzotriazole (BTZ) and two tolyltriazoles (TTZs), 4-methyl-1H-benzotriazole (4-MBTZ) and 5-methyl-1H-benzotriazole (5-MBTZ), were present in the reverse osmosis concentrate at the highest concentrations (7.4 and 12.8 µg L , respectively) and were partially removed by the fungal treatment under sterile conditions (58% for BTZ and 92% for TTZs) and non-sterile conditions, although to lesser extents (32% for BTZ and 50% for TTZs). Individual biotransformation studies of BTZ and the TTZs by T. versicolor in a synthetic medium and further analysis via on-line turbulent flow chromatography coupled to an HRMS-Orbitrap allowed the tentative identification of the transformation products (TPs). Six TPs were postulated for BTZ, two TPs were postulated for 4-MBTZ, and four TPs were postulated for 5-MBTZ. Most of these TPs are suggested to have been generated by conjugation with some sugars and via the methylation of the triazole group. Only TP 148 A, postulated to be derived from the biotransformation of BTZ, was observed in the effluent of the bioreactor treating the reverse osmosis concentrate.
[Mh] Termos MeSH primário: Disruptores Endócrinos/análise
Triazóis/análise
Eliminação de Resíduos Líquidos/métodos
Poluentes Químicos da Água/análise
[Mh] Termos MeSH secundário: Reatores Biológicos/microbiologia
Biotransformação
Disruptores Endócrinos/metabolismo
Osmose
Trametes/metabolismo
Triazóis/metabolismo
Águas Residuais/química
Poluentes Químicos da Água/metabolismo
Purificação da Água
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Endocrine Disruptors); 0 (Triazoles); 0 (Waste Water); 0 (Water Pollutants, Chemical); 86110UXM5Y (benzotriazole); O9DI72TU6U (5-tolyltriazole)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170929
[Lr] Data última revisão:
170929
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170630
[St] Status:MEDLINE


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[PMID]:28609753
[Au] Autor:Metreveli E; Kachlishvili E; Singer SW; Elisashvili V
[Ad] Endereço:Agricultural University of Georgia, 240 David Agmashenebeli alley, 0159 Tbilisi, Georgia.
[Ti] Título:Alteration of white-rot basidiomycetes cellulase and xylanase activities in the submerged co-cultivation and optimization of enzyme production by Irpex lacteus and Schizophyllum commune.
[So] Source:Bioresour Technol;241:652-660, 2017 Oct.
[Is] ISSN:1873-2976
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Mono and dual cultures of four white-rot basidiomycete species were evaluated for cellulase and xylanase activity under submerged fermentation conditions. Co-cultivation of Pycnoporus coccineus or Trametes hirsuta with Schizophyllum commune displayed antagonistic interactions resulting in the decrease of endoglucanase and total cellulase activities. In contrast, increases in cellulase and xylanase activity were revealed through the compatible interactions of Irpex lacteus with S. commune. Co-cultivation conditions were optimized for maximum enzyme production by I. lacteus and S. commune, the best producers of cellulase/xylanase and ß-glucosidase, respectively. An optimized medium for the target enzyme production by the mixed culture was established in a laboratory fermenter yielding 7U/mL total cellulase, 142U/mL endoglucanase, 104U/mL xylanase, and 5.2U/mL ß-glucosidase. The dual culture approach resulted in an enzymatic mixture with 11% improved lignocellulose saccharification potential compared to enzymes from a monoculture of I. lacteus.
[Mh] Termos MeSH primário: Celulase
Schizophyllum
[Mh] Termos MeSH secundário: Pycnoporus
Trametes
beta-Glucosidase
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
EC 3.2.1.21 (beta-Glucosidase); EC 3.2.1.4 (Cellulase)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171106
[Lr] Data última revisão:
171106
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170614
[St] Status:MEDLINE


  6 / 563 MEDLINE  
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[PMID]:28576332
[Au] Autor:Sánchez-Trasviña C; Mayolo-Deloisa K; González-Valdez J; Rito-Palomares M
[Ad] Endereço:Escuela de Ingeniería y Ciencias, Centro de Biotecnología-FEMSA, Tecnológico de Monterrey,Campus Monterrey, Av. Eugenio Garza Sada 2501 Sur, CP 64849, Monterrey, México.
[Ti] Título:Refolding of laccase from Trametes versicolor using aqueous two phase systems: Effect of different additives.
[So] Source:J Chromatogr A;1507:25-31, 2017 Jul 21.
[Is] ISSN:1873-3778
[Cp] País de publicação:Netherlands
[La] Idioma:eng
[Ab] Resumo:Protein refolding is a strategy used to obtain active forms of proteins from inclusion bodies. On its part, laccase is an enzyme with potential for different biotechnological applications but there are few reports regarding its refolding which in many cases is considered inefficient due to the poor obtained refolding yields. Aqueous Two-Phase Systems (ATPS) have been used for the refolding of proteins getting acceptable recovery percentages since PEG presents capacity to avoid protein aggregation. In this work, 48 PEG-phosphate ATPS were analyzed to study the impact of different parameters (i.e. tie line length (TLL), volume ratio (V ) and PEG molecular weight) upon the recovery and refolding of laccase. Additionally, since laccase is a metalloprotein, the use of additives (individually and in mixture) was studied with the aim of favoring refolding. Results showed that laccase presents a high affinity for the PEG-rich phase obtaining recovery values of up to 90%. Such affinity increases with increasing TLL and decreases when PEG molecular weight and V increase. In denatured state, this PEG-rich phase affinity decreases drastically. However, the use of additives such as l-cysteine, glutathione oxidized, cysteamine and Cu was critical in improving refolding yield values up to 100%. The best conditions for the refolding of laccase were obtained using the PEG 400gmol , TLL 45% w/w, V 3 ATPS and a mixture of 2.5mM cysteamine with 1mM Cu . To our knowledge, this is the first time that the use of additives and the behavior of the mixture of such additives to enhance refolding performance in ATPS is reported.
[Mh] Termos MeSH primário: Proteínas Fúngicas/química
Lacase/química
Trametes/enzimologia
[Mh] Termos MeSH secundário: Corpos de Inclusão/química
Peso Molecular
Redobramento de Proteína
Trametes/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Fungal Proteins); EC 1.10.3.2 (Laccase)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171102
[Lr] Data última revisão:
171102
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170604
[St] Status:MEDLINE


  7 / 563 MEDLINE  
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[PMID]:28575092
[Au] Autor:Pezzella C; Macellaro G; Sannia G; Raganati F; Olivieri G; Marzocchella A; Schlosser D; Piscitelli A
[Ad] Endereço:Dipartimento di Scienze Chimiche, Università degli Studi di Napoli Federico II, Napoli, Italy.
[Ti] Título:Exploitation of Trametes versicolor for bioremediation of endocrine disrupting chemicals in bioreactors.
[So] Source:PLoS One;12(6):e0178758, 2017.
[Is] ISSN:1932-6203
[Cp] País de publicação:United States
[La] Idioma:eng
[Ab] Resumo:Endocrine disrupting chemicals (EDCs) are environmental contaminants causing increasing concerns due to their toxicity, persistence and ubiquity. In the present study, degradative capabilities of Trametes versicolor, Pleurotus ostreatus and Phanerochaete chrysosporium to act on five EDCs, which represent different classes of chemicals (phenols, parabens and phthalate) and were first applied as single compounds, were assessed. T. versicolor was selected due to its efficiency against target EDCs and its potentialities were exploited against a mixture of EDCs in a cost-effective bioremediation process. A fed-batch approach as well as a starvation strategy were applied in order to reduce the need for input of 'fresh' biomass, and avoid the requirement for external nutrients. The fungus was successfully operated in two different bioreactors over one week. Semi-batch cultures were carried out by daily adding a mixture of EDCs to the bioreactors in a total of five consecutive degradation cycles. T. versicolor was able to efficiently remove all compounds during each cycle converting up to 21 mg L-1 day-1 of the tested EDCs. The maintained ability of T. versicolor to remove EDCs without any additional nutrients represents the main outcome of this study, which enables to forecast its application in a water treatment process.
[Mh] Termos MeSH primário: Reatores Biológicos
Disruptores Endócrinos/metabolismo
Trametes/metabolismo
[Mh] Termos MeSH secundário: Biodegradação Ambiental
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Endocrine Disruptors)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170922
[Lr] Data última revisão:
170922
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170603
[St] Status:MEDLINE
[do] DOI:10.1371/journal.pone.0178758


  8 / 563 MEDLINE  
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[PMID]:28499155
[Au] Autor:Batista-García RA; Kumar VV; Ariste A; Tovar-Herrera OE; Savary O; Peidro-Guzmán H; González-Abradelo D; Jackson SA; Dobson ADW; Sánchez-Carbente MDR; Folch-Mallol JL; Leduc R; Cabana H
[Ad] Endereço:Centro de Investigación en Dinámica Celular, Universidad Autónoma del Estado de Morelos (UAEM), Cuernavaca, Morelos, Mexico; Department of Civil Engineering, Université de Sherbrooke (UdeS), Sherbrooke, Quebec, J1K 2R1, Canada. Electronic address: rabg@uaem.mx.
[Ti] Título:Simple screening protocol for identification of potential mycoremediation tools for the elimination of polycyclic aromatic hydrocarbons and phenols from hyperalkalophile industrial effluents.
[So] Source:J Environ Manage;198(Pt 2):1-11, 2017 Aug 01.
[Is] ISSN:1095-8630
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:A number of fungal strains belonging to the ascomycota, basidiomycota and zygomycota genera were subjected to an in vitro screening regime to assess their ligninolytic activity potential, with a view to their potential use in mycoremediation-based strategies to remove phenolic compounds and polycyclic aromatic hydrocarbons (PAHs) from industrial wastewaters. All six basidiomycetes completely decolorized remazol brilliant blue R (RBBR), while also testing positive in both the guaiacol and gallic acid tests indicating good levels of lignolytic activity. All the fungi were capable of tolerating phenanthrene, benzo-α- pyrene, phenol and p-chlorophenol in agar medium at levels of 10 ppm. Six of the fungal strains, Pseudogymnoascus sp., Aspergillus caesiellus, Trametes hirsuta IBB 450, Phanerochate chrysosporium ATCC 787, Pleurotus ostreatus MTCC 1804 and Cadophora sp. produced both laccase and Mn peroxidase activity in the ranges of 200-560 U/L and 6-152 U/L, respectively, in liquid media under nitrogen limiting conditions. The levels of adsorption of the phenolic and PAHs were negligible with 99% biodegradation being observed in the case of benzo-α-pyrene, phenol and p-chlorophenol. The aforementioned six fungal strains were also found to be able to effectively treat highly alkaline industrial wastewater (pH 12.4). When this wastewater was supplemented with 0.1 mM glucose, all of the tested fungi, apart from A. caesiellus, displayed the capacity to remove both the phenolic and PAH compounds. Based on their biodegradative capacity we found T. hirsuta IBB 450 and Pseudogymnoascus sp., to have the greatest potential for further use in mycoremediation based strategies to treat wastestreams containing phenolics and PAHs.
[Mh] Termos MeSH primário: Hidrocarbonetos Aromáticos Policíclicos/metabolismo
Purificação da Água
[Mh] Termos MeSH secundário: Biodegradação Ambiental
Clorofenóis
Resíduos Industriais
Fenóis
Trametes
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Chlorophenols); 0 (Industrial Waste); 0 (Phenols); 0 (Polycyclic Aromatic Hydrocarbons); 3DLC36A01X (4-chlorophenol)
[Em] Mês de entrada:1711
[Cu] Atualização por classe:171113
[Lr] Data última revisão:
171113
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170513
[St] Status:MEDLINE


  9 / 563 MEDLINE  
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[PMID]:28494353
[Au] Autor:Lizano-Fallas V; Masís-Mora M; Espinoza-Villalobos D; Lizano-Brenes M; Rodríguez-Rodríguez CE
[Ad] Endereço:Centro de Investigación en Contaminación Ambiental (CICA), Universidad de Costa Rica, 2060 San José, Costa Rica.
[Ti] Título:Removal of pesticides and ecotoxicological changes during the simultaneous treatment of triazines and chlorpyrifos in biomixtures.
[So] Source:Chemosphere;182:106-113, 2017 Sep.
[Is] ISSN:1879-1298
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:Biopurification systems constitute a biological approach for the treatment of pesticide-containing wastewaters produced in agricultural activities, and contain an active core called biomixture. This work evaluated the performance of a biomixture to remove and detoxify a combination of three triazine herbicides (atrazine/terbuthylazine/terbutryn) and one insecticide (chlorpyrifos), and this efficiency was compared with dissipation in soil alone. The potential enhancement of the process was also assayed by bioaugmentation with the ligninolytic fungi Trametes versicolor. Globally, the non-bioaugmented biomixture exhibited faster pesticide removal than soil, but only in the first stages of the treatment. After 20 d, the largest pesticide removal was achieved in the biomixture, while significant removal was detected only for chlorpyrifos in soil. However, after 60 d the removal values in soil matched those achieved in the biomixture for all the pesticides. The bioaugmentation failed to enhance, and even significantly decreased the biomixture removal capacity. Final removal values were 82.8% (non-bioaugmented biomixture), 43.8% (fungal bioaugmented biomixture), and 84.7% (soil). The ecotoxicological analysis revealed rapid detoxification (from 100 to 170 TU to <1 TU in 20 d) towards Daphnia magna in the biomixture and soil, and slower in the bioaugmented biomixture, coinciding with pesticide removal. On the contrary, despite important herbicide elimination, no clear detoxification patterns were observed in the phytotoxicity towards Lactuca sativa. Findings suggest that the proposed biomixture is useful for fast removal of the target pesticides; even though soil also removes the agrochemicals, longer periods would be required. On the other hand, the use of fungal bioaugmentation is discouraged in this matrix.
[Mh] Termos MeSH primário: Biodegradação Ambiental
Clorpirifos/isolamento & purificação
Ecotoxicologia
Praguicidas/isolamento & purificação
Triazinas/isolamento & purificação
[Mh] Termos MeSH secundário: Animais
Poluentes do Solo/isolamento & purificação
Trametes/metabolismo
Águas Residuais/toxicidade
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Pesticides); 0 (Soil Pollutants); 0 (Triazines); 0 (Waste Water); JCS58I644W (Chlorpyrifos); M095B391J7 (terbutylazine); ZXL474TLFP (terbutryne)
[Em] Mês de entrada:1709
[Cu] Atualização por classe:170922
[Lr] Data última revisão:
170922
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170512
[St] Status:MEDLINE


  10 / 563 MEDLINE  
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[PMID]:28327772
[Au] Autor:Feng Y; Lu K; Gao S; Mao L
[Ad] Endereço:State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, Jiangsu 210023, P. R. China. ecsxg@nju.edu.cn lmao@nju.edu.cn.
[Ti] Título:The fate and transformation of tetrabromobisphenol A in natural waters, mediated by oxidoreductase enzymes.
[So] Source:Environ Sci Process Impacts;19(4):596-604, 2017 Apr 19.
[Is] ISSN:2050-7895
[Cp] País de publicação:England
[La] Idioma:eng
[Ab] Resumo:In this study, we examined the fate and transformation of tetrabromobisphenol A (TBBPA), mediated by the representative oxidoreductases (laccase and horseradish peroxidase (HRP)) in natural waters. Both enzymes could readily degrade TBBPA at environmentally relevant concentrations (e.g., 10 nmol L ) in natural waters. After 2 hour treatment, 0.5-25% and 35-65% of TBBPA were degraded in municipal wastewater and natural surface waters by a laccase or HRP-catalyzed reaction, respectively. Enzyme kinetics evaluations indicated that the k /K ratio of HRP (1.01 µM s ) was much higher than that of laccase (0.032 µM s ) for TBBPA degradation, suggesting that the catalytic performance of HRP towards TBBPA was more efficient than that of laccase. The effects of pH and organic matter on the enzymatic degradation efficiency were explored. Organic matter in the water inhibited the enzymatic degradation efficiency and the degree of inhibition was proportional to the UV values of water. Product identification indicated that the product distribution of TBBPA at low concentration (10 nmol L ) was similar to that of TBBPA at high concentration (10 µmol L ). The degradation intermediates underwent further enzymatic reaction to yield higher molecular weight secondary products. Toxicity assessment showed that TBBPA toxicity was effectively eliminated by the oxidoreductase-catalyzed reaction.
[Mh] Termos MeSH primário: Catálise
Peroxidase do Rábano Silvestre/metabolismo
Lacase/metabolismo
Oxirredução
Bifenil Polibromatos/metabolismo
Trametes/metabolismo
Poluentes Químicos da Água/metabolismo
Água/metabolismo
[Mh] Termos MeSH secundário: Biodegradação Ambiental
China
Rios/química
[Pt] Tipo de publicação:JOURNAL ARTICLE
[Nm] Nome de substância:
0 (Polybrominated Biphenyls); 0 (Water Pollutants, Chemical); 059QF0KO0R (Water); EC 1.10.3.2 (Laccase); EC 1.11.1.- (Horseradish Peroxidase); FQI02RFC3A (tetrabromobisphenol A)
[Em] Mês de entrada:1705
[Cu] Atualização por classe:170530
[Lr] Data última revisão:
170530
[Sb] Subgrupo de revista:IM
[Da] Data de entrada para processamento:170323
[St] Status:MEDLINE
[do] DOI:10.1039/c6em00703a



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