Academic literature on the topic 'Laccase substrates'

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Journal articles on the topic "Laccase substrates"

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Mohit, Elham, Maryam Tabarzad, and Mohammad Ali Faramarzi. "Biomedical and Pharmaceutical-Related Applications of Laccases." Current Protein & Peptide Science 21, no. 1 (2020): 78–98. http://dx.doi.org/10.2174/1389203720666191011105624.

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The oxidation of a vast range of phenolic and non-phenolic substrates has been catalyzed by laccases. Given a wide range of substrates, laccases can be applied in different biotechnological applications. The present review was conducted to provide a broad context in pharmaceutical- and biomedical- related applications of laccases for academic and industrial researchers. First, an overview of biological roles of laccases was presented. Furthermore, laccase-mediated strategies for imparting antimicrobial and antioxidant properties to different surfaces were discussed. In this review, laccase-med
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Wang, Feng, Ling Xu, Liting Zhao, Zhongyang Ding, Haile Ma, and Norman Terry. "Fungal Laccase Production from Lignocellulosic Agricultural Wastes by Solid-State Fermentation: A Review." Microorganisms 7, no. 12 (2019): 665. http://dx.doi.org/10.3390/microorganisms7120665.

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Laccases are copper-containing oxidase enzymes found in many fungi. They have received increasing research attention because of their broad substrate specificity and applicability in industrial processes, such as pulp delignification, textile bleaching, phenolic removal, and biosensors. In comparison with traditional submerged fermentation (SF), solid-state fermentation (SSF) is a simpler technique for laccase production and has many advantages, including higher productivity, efficiency, and enzyme stability as well as reduced production costs and environmental pollution. Here, we review recen
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Mander, Gerd J., Huaming Wang, Elizabeth Bodie, et al. "Use of Laccase as a Novel, Versatile Reporter System in Filamentous Fungi." Applied and Environmental Microbiology 72, no. 7 (2006): 5020–26. http://dx.doi.org/10.1128/aem.00060-06.

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ABSTRACT Laccases are copper-containing enzymes which oxidize phenolic substrates and transfer the electrons to oxygen. Many filamentous fungi contain several laccase-encoding genes, but their biological roles are mostly not well understood. The main interest in laccases in biotechnology is their potential to be used to detoxify phenolic substances. We report here on a novel application of laccases as a reporter system in fungi. We purified a laccase enzyme from the ligno-cellulolytic ascomycete Stachybotrys chartarum. It oxidized the artificial substrate 2,2′-azino-di-(3-ethylbenzthiazolinsul
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Zhang, Ying Long, Hai Bo Zhang, You Shuang Zhu, Ming Le Cao, Ming Qiang Ai, and Feng Huang. "Influences of Organic Compounds on Laccase Activity Tests." Applied Mechanics and Materials 416-417 (September 2013): 1702–7. http://dx.doi.org/10.4028/www.scientific.net/amm.416-417.1702.

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Organic compounds oxalic acid and ethylenediaminetetraacetic acid disodium salt-2-hydrate (EDTA Na2) were described as laccase inhibitors by forming complex compounds with the metal ions of the laccase. Their influence on laccase from Trametes hirsuta lg-9 and Rhus vernificera in different test systems utilizing 2, 2-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) (ABTS) and 2, 6-dimethoxyphenol (DMP) as enzyme substrates were tested. Our study indicated that oxalic acid can influence the laccase activity determination mainly by changing the pH of the reaction system. The influences of both
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Trubitsina, Liubov Igorevna, Azat Vadimovich Abdullatypov, Anna Petrovna Larionova, et al. "Expression of thermophilic two-domain laccase from Catenuloplanes japonicus in Escherichia coli and its activity against triarylmethane and azo dyes." PeerJ 9 (June 24, 2021): e11646. http://dx.doi.org/10.7717/peerj.11646.

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Background Two-domain laccases are copper-containing oxidases found in bacteria in the beginning of 2000ths. Two-domain laccases are known for their thermal stability, wide substrate specificity and, the most important of all, their resistance to so-called «strong inhibitors» of classical fungal laccases (azides, fluorides). Low redox potential was found to be specific for all the two-domain laccases, due to which these enzymes lost the researchers’ interest as potentially applicable for various biotechnological purposes, such as bioremediation. Searching, obtaining and studying the properties
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Contato, Alex Graça, Fabíola Dorneles In´ácio, Tatiane Brugnari, et al. "Solid-state fermentation with orange waste: optimization of Laccase production from Pleurotus pulmonarius CCB-20 and decolorization of synthetic dyes." Acta Scientiarum. Biological Sciences 42 (May 19, 2020): e52699. http://dx.doi.org/10.4025/actascibiolsci.v42i1.52699.

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Laccases are oxidoreductase enzymes that have the ability to oxidize phenolic substrates. Its biotechnological potential has been greatly explored in many areas as biotechnology industry, bioremediation of dyes, food industry and environmental microbiology. The aim of this study was maximize the laccase production by Pleurotus pulmonarius (Fr.) Quélet in solid-state fermentation (SSF) using orange waste as substrate. After optimization the capability of the crude laccase to decolorize dyes was analyzed. The fermentation medium in the solid-state was optimized by applying a factorial design. Af
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Aza, Pablo, Gonzalo Molpeceres, Francisco Javier Ruiz-Dueñas, and Susana Camarero. "Heterologous Expression, Engineering and Characterization of a Novel Laccase of Agrocybe pediades with Promising Properties as Biocatalyst." Journal of Fungi 7, no. 5 (2021): 359. http://dx.doi.org/10.3390/jof7050359.

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Agaricomycetes fungi responsible for decay of wood and other lignocellulosic substrates constitute a valuable source of lignin-degrading enzymes. Among these enzymes, laccases (multi-copper oxidases) present remarkable biotechnological potential as environmentally friendly biocatalysts able to oxidize a wide range of aromatic compounds using oxygen as the only requirement. Laccases from saprotrophic Agaricales species have been much less studied than laccases from Polyporales, despite the fact that the former fungi are excellent sources of laccases. Here, the gene of a novel laccase of Agrocyb
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More, Sunil S., Renuka P. S., Pruthvi K., Swetha M., S. Malini, and Veena S. M. "Isolation, Purification, and Characterization of Fungal Laccase from Pleurotus sp." Enzyme Research 2011 (September 29, 2011): 1–7. http://dx.doi.org/10.4061/2011/248735.

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Laccases are blue copper oxidases (E.C. 1.10.3.2 benzenediol: oxygen oxidoreductase) that catalyze the one-electron oxidation of phenolics, aromatic amines, and other electron-rich substrates with the concomitant reduction of O2 to H2O. They are currently seen as highly interesting industrial enzymes because of their broad substrate specificity. A positive strain was isolated and characterized as nonspore forming Basidiomycetes Pleurotus sp. Laccase activity was determined using ABTS as substrate. Laccase was purified by ionexchange and gel filtration chromatography. The purified laccase was a
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Glazunova, Olga, Nikita Trushkin, Konstantin Moiseenko, Ivan Filimonov, and Tatyana Fedorova. "Catalytic Efficiency of Basidiomycete Laccases: Redox Potential versus Substrate-Binding Pocket Structure." Catalysts 8, no. 4 (2018): 152. http://dx.doi.org/10.3390/catal8040152.

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Laccases are copper-containing oxidases that catalyze a one-electron abstraction from various phenolic and non-phenolic compounds with concomitant reduction of molecular oxygen to water. It is well-known that laccases from various sources have different substrate specificities, but it is not completely clear what exactly provides these differences. The purpose of this work was to study the features of the substrate specificity of four laccases from basidiomycete fungi Trametes hirsuta, Coriolopsis caperata, Antrodiella faginea, and Steccherinum murashkinskyi, which have different redox potenti
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Rodakiewicz-Nowak, J., J. Haber, N. Pozdnyakova, A. Leontievsky, and L. A. Golovleva. "Effect of Ethanol on Enzymatic Activity of Fungal Laccases." Bioscience Reports 19, no. 6 (1999): 589–600. http://dx.doi.org/10.1023/a:1020223130115.

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Blue laccase from Coriolus versicolor and blue and yellow laccases from Panus tigrinus were isolated, purified and studied in acetate buffer solutions, with and without addition of various amounts of ethanol, using syringaldazine and 2,6-dimethoxyphenol as substrates. Effect of ethanol on blue laccases could be successfully described using the mixed inhibition model, over the range of 0–2.5 M ethanol concentrations. Yellow laccase from P. tigrinus behaves differently, which may be explained by the presence of some extra molecules in its structure, which possibly stabilize the enzyme and might
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Dissertations / Theses on the topic "Laccase substrates"

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Prasain, Keshar. "Synthesis and bioevaluation of laccase substrates and substituted quinolines." Diss., Kansas State University, 2013. http://hdl.handle.net/2097/15460.

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Doctor of Philosophy<br>Department of Chemistry<br>Duy H. Hua<br>Our research work is divided into three chapters. In the first chapter, synthesis of substituted phenolic compounds including halogenated di- and trihydroxybenzenes, aminophenols, and substituted di-tert-butylphenols, their redox potential, laccase oxidation, and mosquito anti-larval activities are discussed. The synthesized substituted phenols were found to be the substrates but not the inhibitors of laccase. An inverse correlation between the oxidation potential and the laccase oxidation efficiency of halogenated hydroxybenzen
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Eker, Zeynep. "Preparation And Characterization Of Titania-silica-gold Thin Films Over Ito Substrates For Laccase Immobilization." Master's thesis, METU, 2009. http://etd.lib.metu.edu.tr/upload/3/12611022/index.pdf.

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The aim of this study was to immobilize the redox enzyme laccase over TiO2-SiO2-Au thin film coated ITO glass substrates in order to prepare electrochemically active surfaces for biosensor applications. Colloidal TiO2-SiO2-Au solution was synthesized by sol-gel route and thin film was deposited onto the substrates by dipcoating method. The cysteamine was utilized as a linker for immobilization of enzyme covalently through gold active sites. Preliminary studies were conducted by using invertase as model enzyme and Pyrex glasses as substrates. The effect of immobilization parameters such as im
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Gonzalez, Bautista Enrique. "Amélioration du pré-traitement d'un substrat à base de bagasse de canne à sucre par Pycnoporus sanguineus pour la production de bioéthanol de seconde génération." Thesis, Aix-Marseille, 2019. http://theses.univ-amu.fr.lama.univ-amu.fr/191218_GONZALEZBAUTISTA_299yaz508c24jzl757xy_TH.pdf.

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Le pré-traitement biologique représente une option peu couteuse et éco-compatible bien qu’elle nécessite un temps plus long en comparaison avec des méthodes chimiques. Les champignons de la pourriture blanche producteurs de laccases (phénoloxydases) comme Pycnoporus sanguineus sont de candidats pour de tels traitements biologiques. Les objectifs de ce travail sont de définir i) les conditions de cultures (sources azotée, inducteurs aromatiques des laccases, inoculum et le temps d’incubation) et ii) la préparation du substrat (pasteurisation) qui favorisent les activités laccases et la déphénol
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Velazquez, Cedeno Marnyye Angélica. "Compétition entre Pleurotus ostreatus et Trichoderma sp. En culture sur paille de blé : rôle des communautés bactériennes du substrat et des laccases de Pleurotus." Aix-Marseille 3, 2005. http://www.theses.fr/2005AIX30030.

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La préparation d'un substrat de culture électif est importante afin de favoriser la croissance du champignon comestible Pleurotus ostreatus, et limiter l'implantation de ses antagonistes fongiques. L'ensemble des analyses de PCR-DGGE et de dénombrements microbiens montre que la structure de la communauté bactérienne est modifiée en fonction du traitement employé, l'espèce de Pleurotus inoculée, l'introduction de microorganismes inhibiteurs de Trichoderma sp. Et l'ajout de Compostzyme®. Ces changements dans la structure des communautés bactériennes influencent la compétition entre P. Ostreatus
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Liao, Yu-Huei, and 廖昱惠. "Substrate profile by Laccase." Thesis, 2017. http://ndltd.ncl.edu.tw/handle/v7ppwu.

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碩士<br>國立彰化師範大學<br>生物技術研究所<br>105<br>Laccase are multi-copper oxidases (MCO)that play a major role in nature in degrading lignin in plant cell walls.Lignin is polymerized from aromatic monomers and other aromatic compounds that are mostly substrates of laccase-catalyzed reduction-oxidation(Redox) reations.Laccase performs a one-eletron oxidation and uses oxygen as the eletron acceptor which is eventully reduced to water. Most previous studies on the kinetics of laccase measure the absorption spectra of the products,and kinetic parameters of the enzyme were calculated from the changes of the abs
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Correia, Carla Isabel Faria. "Utilização de extratos vegetais para obtenção de cores diversas em substratos têxteis não naturais." Master's thesis, 2014. http://hdl.handle.net/1822/35541.

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Dissertação de mestrado integrado em Engenharia Biológica (área de especialização em Tecnologia Química e Alimentar)<br>O setor do tingimento da indústria têxtil é responsável pela produção de grandes quantidades de poluição, maioritariamente poluição aquática, devido à libertação dos efluentes em rios. Para além do impacto no meio ambiente causado por este setor, também são consumidas grandes quantidades de recursos, como energia e água. O objetivo deste projeto centrou-se na otimização de um processo de coloração com extratos naturais e enzima lacase, em que os efluentes gerados ao long
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Slavíková, Amemori Anna. "Aplikace ligninolytických hub na pevných substrátech pro degradace endokrinních disruptorů." Master's thesis, 2012. http://www.nusl.cz/ntk/nusl-305417.

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Today a lot of attention is focused on compounds called endocrine disrupters (EDs) among substances released to environment by humans. They are a group of substances which can disturb function of hormonal system of organisms including humans. Their poor removal at wastewater treatment plants (WwTP) were shown at various studies, thus they can reach the environment in water. A prospective way for the degradation of EDs at WwTP can be their removal by ligninolytic fungi. They are able to degrade lots of lignin-like aromatic substances because of their highly nonspecific enzymes. In this work gro
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Book chapters on the topic "Laccase substrates"

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Jacoud, Colette, Denis Faure, Aline Effosse, Patrick Wadoux, and Marie L. Bouillant. "Laccase Activity in Azospirillum lipoferum: Substrates and Inhibitors." In Azospirillum VI and Related Microorganisms. Springer Berlin Heidelberg, 1995. http://dx.doi.org/10.1007/978-3-642-79906-8_39.

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Flurkey, William H., Betty Ratcliff, Luis Lopez, Jill Kuglin, and Ruthellen M. Dawley. "Differentiation of Fungal Tyrosinases and Laccases Using Selective Inhibitors and Substrates." In ACS Symposium Series. American Chemical Society, 1995. http://dx.doi.org/10.1021/bk-1995-0600.ch006.

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Forootanfar, Hamid, Shokouh Arjmand, Mina Behzadi, and Mohammad Ali Faramarzi. "Laccase-Mediated Treatment of Pharmaceutical Wastes." In Research Advancements in Pharmaceutical, Nutritional, and Industrial Enzymology. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-5237-6.ch010.

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Laccases are versatile multi-copper enzymes belonging to the superfamily of oxidase enzymes, which have been known since the nineteenth century. Recent discoveries have refined investigators' views of the potential of laccase as a magic tool for remarkable biotechnological purposes. A literature review of the capabilities of laccases, their assorted substrates, and their molecular mechanism of action now indicates the emergence of a new direction for laccase application as part of an arsenal in the fight against the contamination of water supplies by a number of frequently prescribed medications. This chapter provides a critical review of the literature and reveals the pivotal role of laccases in the elimination and detoxification of pharmaceutical contaminants in aquatic environments and wastewaters.
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Kushwaha, Ankita, Shweta Maurya, Ravi Kant Pathak, Sonam Agarwal, Pankaj Kumar Chaurasia, and M. P. Singh. "Laccase From White Rot Fungi Having Significant Role in Food, Pharma, and Other Industries." In Research Advancements in Pharmaceutical, Nutritional, and Industrial Enzymology. IGI Global, 2018. http://dx.doi.org/10.4018/978-1-5225-5237-6.ch011.

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Laccases (E.C. 1.10.3.2 benzenediol: oxygen oxidoreductase) are an interesting group of N glycosylated multicopper blue oxidase enzymes and the widely studied enzyme having a broad range of substrate specificity of both phenolic and non-phenolic compounds. They are widely found in fungi, bacteria plant, insects, and in lichen. They catalyze the oxidation of various phenolic and non-phenolic compounds, with the concomitant reduction of molecular oxygen to water. They could increase productivity, efficiency, and quality of products without a costly investment. This chapter depicts the applications of laccase enzyme from white rot fungi, having various industrial (such as textile dye bleaching, paper and pulp bleaching, food includes the baking, it also utilized in fruit juice industry to improve the quality and stabilization of some perishable products having plant oils), pharmaceutical (as it has potential for the synthesis of several useful drugs such anticancerous, antioxidants, synthesis of hormone derivatives because of their high value of oxidation potential) significance.
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Salcedo Martnez, Sergio M., Guadalupe Gutirrez-Soto, Carlos F. Rodriguez Garza, Tania J. Villarreal Galvan, Juan F. Contreras Cordero, and Carlos E. Hernandez Luna. "Purification and Partial Characterization of a Thermostable Laccase from Pycnoporus sanguineus CS-2 with Ability to Oxidize High Redox Potential Substrates and Recalcitrant Dyes." In Applied Bioremediation - Active and Passive Approaches. InTech, 2013. http://dx.doi.org/10.5772/56374.

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Kumaran, S., C. A. Sastry, and S. Vikineswary. "Solid substrate fermentation of sago ‘hampas’ for laccase production." In Global Environmental Biotechnology, Proceedings of the Third Biennial Meeting of the International Society for Environmental Biotechnology. Elsevier, 1997. http://dx.doi.org/10.1016/s0166-1116(97)80047-7.

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Singh, Rajender, and Mamta Chauhan. "Effective Management of Agro-Industrial Residues as Composting in Mushroom Industry and Utilization of Spent Mushroom Substrate for Bioremediation." In Advances in Environmental Engineering and Green Technologies. IGI Global, 2016. http://dx.doi.org/10.4018/978-1-4666-9734-8.ch008.

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Different types of edible mushrooms like Agaricus, bisporus, A. bitoriqus, Pleurotus spp., Volvariella volvacea, Lentinula edodes, Calocybe indica, Flamullina, Ganoderma lucidum etc. are cultivated in industrial scale. Majority of edible fungi secretes extracellular Ligninocellulolytic enzymes like Laccase, lignin peroxidase, manganese peroxidase, cellulase etc. for effective conversion of ligninocellulolytic substrate to compositing form which led to fruiting of mushrooms. Consequently, an adequate disposal method is needed for the high quantities of spent mushroom substrate (SMS) generated in this agro-food industrial activity. On the other side, textile industry among the largest water consuming industries in the world and approximately, 10,000 different dyes and pigments are used at industrial scale. It is estimated that nearly 40% of the total dyes used in the dyeing process may find their way in wastewater. So, there is an attempt to utilize the ligninolytic enzymes rich SMS of different mushroom for efficiently biodegradation of textile wastewater &amp; polyaromatic pollutants.
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Singh, Rajender, and Mamta Chauhan. "Effective Management of Agro-Industrial Residues as Composting in Mushroom Industry and Utilization of Spent Mushroom Substrate for Bioremediation." In Waste Management. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-1210-4.ch055.

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Different types of edible mushrooms like Agaricus, bisporus, A. bitoriqus, Pleurotus spp., Volvariella volvacea, Lentinula edodes, Calocybe indica, Flamullina, Ganoderma lucidum etc. are cultivated in industrial scale. Majority of edible fungi secretes extracellular Ligninocellulolytic enzymes like Laccase, lignin peroxidase, manganese peroxidase, cellulase etc. for effective conversion of ligninocellulolytic substrate to compositing form which led to fruiting of mushrooms. Consequently, an adequate disposal method is needed for the high quantities of spent mushroom substrate (SMS) generated in this agro-food industrial activity. On the other side, textile industry among the largest water consuming industries in the world and approximately, 10,000 different dyes and pigments are used at industrial scale. It is estimated that nearly 40% of the total dyes used in the dyeing process may find their way in wastewater. So, there is an attempt to utilize the ligninolytic enzymes rich SMS of different mushroom for efficiently biodegradation of textile wastewater &amp; polyaromatic pollutants.
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Rascón-Chu, Agustín, Ana L. Martínez-López, and Alejandro Romo-Chacón. "Laccase Production by Trametes Versicolor and Armillaria Mellea Using Maize Bran as Support-Substrate and its Dye Decolorization Potential as Affected by pH." In Food Process Engineering and Quality Assurance. Apple Academic Press, 2018. http://dx.doi.org/10.1201/9781315232966-5.

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Conference papers on the topic "Laccase substrates"

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Chairin, T., C. Khanongnuch, and S. Lumyong. "Mixture design of agricultural waste substrates for laccase production from white rot fungus." In Proceedings of the III International Conference on Environmental, Industrial and Applied Microbiology (BioMicroWorld2009). WORLD SCIENTIFIC, 2010. http://dx.doi.org/10.1142/9789814322119_0071.

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BOUCHERIT, Zeyneb, Raouf ZEHIOUA, and Aicha MECHAKRA. "Use of Olive Mill Wastewater as a substrate for laccase production by fungi." In 1st International Electronic Conference on Applied Sciences. MDPI, 2020. http://dx.doi.org/10.3390/asec2020-07532.

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Nazilah, Kun Rohmatan, Maharani Pertiwi Koentjoro, Isdiantoni, Ida Ekawati, Wirdhatul Muslihatin, and Endry Nugroho Prasetyo. "Effect of laccase oxidation pre-treatment on coffee (Coffea arabica) bean processing waste for composting substrate." In 28TH RUSSIAN CONFERENCE ON MATHEMATICAL MODELLING IN NATURAL SCIENCES. AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0000880.

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