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Nadhilah D, Andriani A, Agustriana E, Nuryana I, Mubarik NR, Dewi KS, Rahmani N, Yanto DHY, Ismayati M, Perwitasari U, Laksmi FA, Wijaya H. Co-catalysis of melanin degradation by laccase-manganese peroxidase complex from Trametes hirsuta OK271075 for application in whitening cosmetics. BIOCATAL BIOTRANSFOR 2023. [DOI: 10.1080/10242422.2023.2188995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/17/2023]
Affiliation(s)
- Dini Nadhilah
- Research Centre for Applied Microbiology, National Agency for Research and Innovation, Cibinong, Bogor, Indonesia
- Department of Biology, Bogor Agricultural University, Bogor, Indonesia
| | - Ade Andriani
- Research Centre for Applied Microbiology, National Agency for Research and Innovation, Cibinong, Bogor, Indonesia
- Research Collaboration Center for Biomass-Based nano Cosmetics, Samarinda, Indonesia
| | - Eva Agustriana
- Research Centre for Applied Microbiology, National Agency for Research and Innovation, Cibinong, Bogor, Indonesia
| | - Isa Nuryana
- Research Centre for Applied Microbiology, National Agency for Research and Innovation, Cibinong, Bogor, Indonesia
| | | | - Kartika Sari Dewi
- Research Centre for Applied Microbiology, National Agency for Research and Innovation, Cibinong, Bogor, Indonesia
| | - Nanik Rahmani
- Research Centre for Applied Microbiology, National Agency for Research and Innovation, Cibinong, Bogor, Indonesia
| | - Dede Heri Yuli Yanto
- Research Centre for Applied Microbiology, National Agency for Research and Innovation, Cibinong, Bogor, Indonesia
- Research Collaboration Center for Biomass-Based nano Cosmetics, Samarinda, Indonesia
| | - Maya Ismayati
- Research Center for Biomass and Bioproducts, National Agency for Research and Innovation, Cibinong, Bogor, Indonesia
| | - Urip Perwitasari
- Research Centre for Applied Microbiology, National Agency for Research and Innovation, Cibinong, Bogor, Indonesia
| | - Fina Amreta Laksmi
- Research Centre for Applied Microbiology, National Agency for Research and Innovation, Cibinong, Bogor, Indonesia
| | - Hans Wijaya
- Research Centre for Applied Microbiology, National Agency for Research and Innovation, Cibinong, Bogor, Indonesia
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Cesur A, Yamamoto R, Asada Y, Watanabe A. Relationship between fruiting body development and extracellular laccase production in the edible mushroom Flammulina velutipes. Biochem Biophys Rep 2022; 29:101204. [PMID: 35059510 PMCID: PMC8760411 DOI: 10.1016/j.bbrep.2022.101204] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 01/04/2022] [Accepted: 01/05/2022] [Indexed: 11/28/2022] Open
Abstract
The biochemical mechanism underlying the development of fruiting bodies in Flammulina velutipes, an edible mushroom, was investigated using the YBLB colorimetric assay to distinguish between the normal strain (FVN-1) and the degenerate strain (FVD-1). In this assay, the color of the YBLB medium (blue-green) inoculated with FVN-1 exhibiting normal fruiting body development changed to yellow, while the color of the medium inoculated with FVD-1 changed to blue. In this study, we found that this color difference originated from extracellular laccase produced by FVN-1. Moreover, FVN-1 exhibited considerably higher extracellular laccase activity than FVD-1, under conditions facilitating fruiting body formation. Overall, these findings suggest that extracellular laccase is involved in the fruiting body development process in F. velutipes. Flammulina velutipes, which forms a fruiting body, showed high laccase activity. A degenerate F. velutipes strain with no fruiting body showed low laccase activity. Extracellular laccase may contribute to fruiting body development in F. velutipes. Low temperature shift increased laccase activity in normal strain of F. velutipes.
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Affiliation(s)
- Aylin Cesur
- Department of Applied Bioresource Science, The United Graduate School of Agricultural Sciences, Ehime University, 3-5-7 Tarumi, Matsuyama, Ehime, 790–8566, Japan
| | - Ryousuke Yamamoto
- Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, 2393 Ikenobe, Miki-cho, Kagawa, 761–0795, Japan
| | - Yasuhiko Asada
- Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, 2393 Ikenobe, Miki-cho, Kagawa, 761–0795, Japan
| | - Akira Watanabe
- Department of Applied Biological Science, Faculty of Agriculture, Kagawa University, 2393 Ikenobe, Miki-cho, Kagawa, 761–0795, Japan
- Corresponding author.
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Choi Y, Nguyen HTK, Lee TS, Kim JK, Choi J. Genetic Diversity and Dye-Decolorizing Spectrum of Schizophyllum commune Population. J Microbiol Biotechnol 2020; 30:1525-1535. [PMID: 32807761 PMCID: PMC9728380 DOI: 10.4014/jmb.2006.06049] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 08/10/2020] [Accepted: 08/11/2020] [Indexed: 12/15/2022]
Abstract
Synthetic dyes are widely used in various industries and their wastage causes severe environmental problems while being hazardous to human health, leading to the need for eco-friendly degradation techniques. The split-gill fungus Schizophyllum commune, which is found worldwide, has the potential to degrade all components of the lignocellulosic biomass and is a candidate for the treatment of synthetic dyes. A systematic molecular analysis of 75 Korean and 6 foreign S. commune strains has revealed the high genetic diversity of this population and its important contribution to the total diversity of S. commune. We examined the dye decolorization ability of this population and revealed 5 excellent strains that strongly decolorized 3 dyes: Crystal Violet, Congo Red and Methylene Blue. Finally, comparison of dye decolorization ability and the phylogenetic identification of these strains generalized their genetic and physiological diversity. This study provides an initial resource for physiological and genetic research projects as well as the bioremediation of textile dyes.
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Affiliation(s)
- Yongjun Choi
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Republic of Korea
| | - Ha Thi Kim Nguyen
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Republic of Korea
| | - Tae Soo Lee
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Republic of Korea
| | - Jae Kwang Kim
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Republic of Korea,Corresponding authors J.K.Kim Phone: +82-32-835-8241 Fax: +82-32-835-0763 E-mail:
| | - Jaehyuk Choi
- Division of Life Sciences, College of Life Sciences and Bioengineering, Incheon National University, Incheon 22012, Republic of Korea,J.Choi Phone: +82-32-835-8242 Fax: +82-32-835-0763 E-mail:
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Bilal M, Iqbal HMN. Microbial Peroxidases and Their Unique Catalytic Potentialities to Degrade Environmentally Related Pollutants. MICROORGANISMS FOR SUSTAINABILITY 2020. [DOI: 10.1007/978-981-15-2679-4_1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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A Rapid Fenton treatment of bio-treated dyeing and finishing wastewater at second-scale intervals: kinetics by stopped-flow technique and application in a full-scale plant. Sci Rep 2019; 9:9689. [PMID: 31273245 PMCID: PMC6609656 DOI: 10.1038/s41598-019-45948-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Accepted: 06/20/2019] [Indexed: 11/08/2022] Open
Abstract
A rapid Fenton treatment at second-scale intervals was investigated for further removal of organic compounds in the effluent of bio-treated dyeing and finishing wastewater (BDFW). The decolorization kinetics was studied using a stopped-flow spectrophotometer (SFS) at second-scale intervals. A combined first-order model was found to fit well for the decrease of both methylene blue and rhodamine B in SFS as well as SCOD (soluble chemical oxygen demand) and DOC (dissolved organic carbon) in real BDFW in batch test during Fenton oxidation. A full-scale plant with treatment capacity of 400,000 m3·d−1 was designed and has been run continuously based on the results of the stopped-flow study to treat the effluent of BDFW using Fenton oxidation in 16 pipeline reactors, each with a volume of 6.9 m3 and 24 s of reaction time since 2014. The COD, SCOD and DOC decreased from 140, 110 and 35 mg·L−1 to 77, 71 and 26 mg·L−1 respectively, which can meet the latest strict discharge limitations. The natural fluorescent substances detected in the BDFW were completely removed. The main organic pollutants in the BDFW can be significantly reduced using both gas chromatography-mass spectrometry and ultrahigh-performance liquid chromatography-hybrid quadrupole time-of-flight mass spectrometry. The rapid Fenton reaction applied in pipeline reactors at second intervals has several advantages over the conventional Fenton’s process such as much shorter reaction time at second scale intervals, no need to build extra pH adjustment or reaction tanks, simple operation, low capital cost, etc.
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Tovar-Herrera OE, Martha-Paz AM, Pérez-LLano Y, Aranda E, Tacoronte-Morales JE, Pedroso-Cabrera MT, Arévalo-Niño K, Folch-Mallol JL, Batista-García RA. Schizophyllum commune: An unexploited source for lignocellulose degrading enzymes. Microbiologyopen 2018; 7:e00637. [PMID: 29785766 PMCID: PMC6011954 DOI: 10.1002/mbo3.637] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2018] [Revised: 03/09/2018] [Accepted: 03/09/2018] [Indexed: 02/01/2023] Open
Abstract
Lignocellulose represents the most abundant source of carbon in the Earth. Thus, fraction technology of the biomass turns up as an emerging technology for the development of biorefineries. Saccharification and fermentation processes require the formulation of enzymatic cocktails or the development of microorganisms (naturally or genetically modified) with the appropriate toolbox to produce a cost‐effective fermentation technology. Therefore, the search for microorganisms capable of developing effective cellulose hydrolysis represents one of the main challenges in this era. Schizophyllum commune is an edible agarical with a great capability to secrete a myriad of hydrolytic enzymes such as xylanases and endoglucanases that are expressed in a high range of substrates. In addition, a large number of protein‐coding genes for glycoside hydrolases, oxidoreductases like laccases (Lacs; EC 1.10.3.2), as well as some sequences encoding for lytic polysaccharide monooxygenases (LPMOs) and expansins‐like proteins demonstrate the potential of this fungus to be applied in different biotechnological process. In this review, we focus on the enzymatic toolbox of S. commune at the genetic, transcriptomic, and proteomic level, as well as the requirements to be employed for fermentable sugars production in biorefineries. At the end the trend of its use in patent registration is also reviewed.
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Affiliation(s)
- Omar Eduardo Tovar-Herrera
- Instituto de Biotecnología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, Ciudad Universitaria, San Nicolás de los Garza, Nuevo León, México
| | - Adriana Mayrel Martha-Paz
- Laboratorio de Micología y Fitopatología, Unidad de manipulación genética, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, Ciudad Universitaria, San Nicolás de los Garza, Nuevo León, México
| | - Yordanis Pérez-LLano
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México
| | - Elisabet Aranda
- Instituto del Agua, Universidad de Granada, Granada, Granada, Spain
| | | | | | - Katiushka Arévalo-Niño
- Instituto de Biotecnología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, Ciudad Universitaria, San Nicolás de los Garza, Nuevo León, México
| | - Jorge Luis Folch-Mallol
- Centro de Investigación en Biotecnología, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México
| | - Ramón Alberto Batista-García
- Centro de Investigación en Dinámica Celular, Universidad Autónoma del Estado de Morelos, Cuernavaca, Morelos, México
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Chicatto JA, Rainert KT, Gonçalves MJ, Helm CV, Altmajer-Vaz D, Tavares LBB. Decolorization of textile industry wastewater in solid state fermentation with Peach-Palm (Bactris gasipaes) residue. BRAZ J BIOL 2018; 78:718-727. [PMID: 29451607 DOI: 10.1590/1519-6984.175074] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 06/29/2017] [Indexed: 11/22/2022] Open
Abstract
In this work we have assessed the decolorization of textile effluents throughout their treatment in a solid-state fermentation (SSF) system. SSF assays were conducted with peach-palm (Bactris gasipaes) residue using the white rot fungus Ganoderma lucidum EF 31. The influence of the dye concentration and of the amounts of peach-palm residue and liquid phase on both the discoloration efficiency and enzyme production was studied. According to our results, independently of experimental conditions employed, laccase was the main ligninolytic enzyme produced by G. lucidum. The highest laccase activity was obtained at very low effluent concentrations, suggesting the existence of an inhibitory effect of higher concentrations on fungal metabolism. The highest percentage of color removal was reached when 10 grams of peach palm residue was moistened with 60 mL of the final effluent. In control tests carried out with the synthetic dye Remazol Brilliant Blue R (RBBR) decolorization efficiencies about 20% higher than that achieved with the industrial effluent were achieved. The adsorption of RBBR on peach-palm residue was also investigated. Equilibrium tests showed that the adsorption of this dye followed both Langmuir and Freundlich isotherms. Hence, our experimental results indicate that peach-palm residue is suitable substrate for both laccase production and color removal in industrial effluents.
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Affiliation(s)
- J A Chicatto
- Environmental Engineering Postgraduate, Universidade Regional de Blumenau - FURB, Rua São Paulo, nº 3250, Itoupava Seca, CEP 89030-080, Blumenau, SC, Brazil
| | - K T Rainert
- Environmental Engineering Postgraduate, Universidade Regional de Blumenau - FURB, Rua São Paulo, nº 3250, Itoupava Seca, CEP 89030-080, Blumenau, SC, Brazil
| | - M J Gonçalves
- Department of Chemical Engineering, Universidade Regional de Blumenau - FURB, Rua São Paulo, nº 3250, Itoupava Seca, CEP 89030-080, Blumenau, SC, Brazil
| | - C V Helm
- National Research Center for Forestry, Embrapa Florestas, Estrada da Ribeira, Km 111, CEP 83411-000, Colombo, PR, Brazil
| | - D Altmajer-Vaz
- Department of Chemical Engineering, Universidad de Granada - UGR, Avenida del Hospicio, s/n, 18010, Granada, España
| | - L B B Tavares
- Environmental Engineering Postgraduate, Universidade Regional de Blumenau - FURB, Rua São Paulo, nº 3250, Itoupava Seca, CEP 89030-080, Blumenau, SC, Brazil
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Alneyadi AH, Rauf MA, Ashraf SS. Oxidoreductases for the remediation of organic pollutants in water - a critical review. Crit Rev Biotechnol 2018; 38:971-988. [PMID: 29385838 DOI: 10.1080/07388551.2017.1423275] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Water contamination by various recalcitrant organic aromatic compounds is an emerging environmental issue that is increasingly attracting the attention of environmental scientists. A great majority of these recalcitrant pollutants are industrial wastes, textile dyes, pharmaceuticals, hormones, and personal care products that are discharged into wastewater. Not surprisingly, various chemical, physical, and biological strategies have been proposed and developed to remove and/or degrade these pollutants from contaminated water bodies. Biological approaches, specifically using oxidoreductase enzymes (such as peroxidases and laccases) for pollutant degradation are a relatively new and a promising research area that has potential advantages over other methods due to their higher efficiency and the ease of handling. This review focuses on the application of different classes of oxidoreductase enzymes to degrade various classes of organic pollutants. In addition to classifying these enzymes based on structural differences, the major factors that can affect their remediation ability, such as the class of peroxidases employed, pH, molecular structure of the pollutant, temperature, and the presence of redox mediators are also examined and discussed. Interestingly, a literature survey combined with our unpublished data suggests that "peroxidases" are a very heterogeneous and diverse family of enzymes and have different pH profiles, temperature optima, thermal stabilities, requirements for redox mediators, and substrate specificities as well as varying detoxification abilities. Additionally, remediation of real-life polluted samples by oxidoreductases is also highlighted as well as a critical look at current challenges and future perspectives.
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Affiliation(s)
| | - Muhammad A Rauf
- b Department of Chemistry , College of Science, UAE University , Al-Ain , UAE
| | - S Salman Ashraf
- b Department of Chemistry , College of Science, UAE University , Al-Ain , UAE
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Characterization of ligninolytic enzyme production in white-rot wild fungal strains suitable for kraft pulp bleaching. 3 Biotech 2017; 7:319. [PMID: 28955616 DOI: 10.1007/s13205-017-0968-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 09/07/2017] [Indexed: 12/15/2022] Open
Abstract
Fungal strains identified by phylogenetic analysis of the ITS rDNA region as Trametes versicolor (CMU-TA01), Irpex lacteus (CMU-84/13), and Phlebiopsis sp. (CMU-47/13) are able to grow on and bleach kraft pulp (KP) in a simple solid-state fermentation (SSF) assay conducted in Petri dishes. Kappa number reductions obtained with Phlebiopsis sp. (48.3%), T. versicolor (43%), and I. lacteus (39.3%), evidence their capability for lignin breakdown. Scanning electron microscopy images of KP fibers from SSF assays demonstrated increased roughness and striation, evidencing significant cell wall modification. T. versicolor produces laccase (Lac), manganese peroxidase (MnP), and lignin peroxidase (LiP) in potato dextrose broth (PDB), PDB + CuSO4, and PDB + KP, whereas Phlebiopsis sp. and I. lacteus showed no Lac and low LiP activities in all media. Compared to PDB, the highest increase in Lac (7.25-fold) and MnP (2.37-fold) activities in PDB + CuSO4 occur in T. versicolor; for LiP, the greatest changes (6.95-fold) were observed in I. lacteus. Incubation in PDB + KP shows significant increases in Lac and MnP for T. versicolor, MnP and LiP for Phlebiopsis sp., and none for I. lacteus. SSF assays in Petri plates are a valuable tool to select fungi that are able to delignify KP. Here, delignification by Phlebiopsis sp. of this substrate is reported for the first time, and MnP activity was strongly associated with the delignification ability of the studied strains. The obtained results suggest that the studied fungal strains have biotechnological potential for use in the paper industry.
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Improved laccase production by Funalia trogii in absorbent fermentation with nutrient carrier. J Biosci Bioeng 2017; 124:381-385. [PMID: 28545839 DOI: 10.1016/j.jbiosc.2017.05.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2016] [Revised: 04/22/2017] [Accepted: 05/01/2017] [Indexed: 10/19/2022]
Abstract
A novel strategy of enhancing laccase production by absorbent fermentation was investigated. Peanut shell was used as nutrient carrier for laccase production by Funalia trogii IFP0027 in the absorbent fermentation. The maximum laccase production was reached to 11,900 U/l, which was 4.97 times higher than that of the control group. The results indicated that carbohydrates and phenolic substances especially flavonoids contained in peanut shell stimulated laccase production by F. trogii. Meanwhile, the peanut shell nutrient carrier could not only alleviate the oxidative damage, owing to strong scavenging activity on hydroxyl, but also relieve the mechanical stresses to form small and regular microbial pellets. Therefore, the absorbent fermentation using peanut shell as nutrient carrier shows enormous potential in enhancing laccase production.
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Yehia RS, Rodriguez-Couto S. Discoloration of the azo dye Congo Red by manganese-dependent peroxidase from Pleurotus sajor caju. APPL BIOCHEM MICRO+ 2017. [DOI: 10.1134/s0003683817020181] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Olajuyigbe FM, Fatokun CO. Biochemical characterization of an extremely stable pH-versatile laccase from Sporothrix carnis CPF-05. Int J Biol Macromol 2017; 94:535-543. [DOI: 10.1016/j.ijbiomac.2016.10.037] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2016] [Revised: 09/22/2016] [Accepted: 10/14/2016] [Indexed: 10/20/2022]
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El Enshasy HA, Hanapi SZ, Abdelgalil SA, Malek RA, Pareek A. Mycoremediation: Decolourization Potential of Fungal Ligninolytic Enzymes. Fungal Biol 2017. [DOI: 10.1007/978-3-319-68957-9_5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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The Structural, Photocatalytic Property Characterization and Enhanced Photocatalytic Activities of Novel Photocatalysts Bi₂GaSbO₇ and Bi₂InSbO₇ during Visible Light Irradiation. MATERIALS 2016; 9:ma9100801. [PMID: 28773922 PMCID: PMC5456611 DOI: 10.3390/ma9100801] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/29/2016] [Revised: 09/18/2016] [Accepted: 09/21/2016] [Indexed: 12/07/2022]
Abstract
In order to develop original and efficient visible light response photocatalysts for degrading organic pollutants in wastewater, new photocatalysts Bi2GaSbO7 and Bi2InSbO7 were firstly synthesized by a solid-state reaction method and their chemical, physical and structural properties were characterized. Bi2GaSbO7 and Bi2InSbO7 were crystallized with a pyrochlore-type structure and the lattice parameter of Bi2GaSbO7 or Bi2InSbO7 was 10.356497 Å or 10.666031 Å. The band gap of Bi2GaSbO7 or Bi2InSbO7 was estimated to be 2.59 eV or 2.54 eV. Compared with nitrogen doped TiO2, Bi2GaSbO7 and Bi2InSbO7, both showed excellent photocatalytic activities for degrading methylene blue during visible light irradiation due to their narrower band gaps and higher crystallization perfection. Bi2GaSbO7 showed higher catalytic activity compared with Bi2InSbO7. The photocatalytic degradation of methylene blue followed by the first-order reaction kinetics and the first-order rate constant was 0.01470 min−1, 0.00967 min−1 or 0.00259 min−1 with Bi2GaSbO7, Bi2InSbO7 or nitrogen doped TiO2 as a catalyst. The evolution of CO2 and the removal of total organic carbon were successfully measured and these results indicated continuous mineralization of methylene blue during the photocatalytic process. The possible degradation scheme and pathway of methylene blue was also analyzed. Bi2GaSbO7 and Bi2InSbO7 photocatalysts both had great potential to purify textile industry wastewater.
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A High Redox Potential Laccase from Pycnoporus sanguineus RP15: Potential Application for Dye Decolorization. Int J Mol Sci 2016; 17:ijms17050672. [PMID: 27164083 PMCID: PMC4881498 DOI: 10.3390/ijms17050672] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2016] [Revised: 04/04/2016] [Accepted: 04/28/2016] [Indexed: 11/16/2022] Open
Abstract
Laccase production by Pycnoporus sanguineus RP15 grown in wheat bran and corncob under solid-state fermentation was optimized by response surface methodology using a Central Composite Rotational Design. A laccase (Lacps1) was purified and characterized and the potential of the pure Lacps1 and the crude culture extract for synthetic dye decolorization was evaluated. At optimal conditions (eight days, 26 °C, 18% (w/w) milled corncob, 0.8% (w/w) NH4Cl and 50 mmol·L−1 CuSO4, initial moisture 4.1 mL·g−1), the laccase activity reached 138.6 ± 13.2 U·g−1. Lacps1 was a monomeric glycoprotein (67 kDa, 24% carbohydrate). Optimum pH and temperature for the oxidation of 2,2’-azino-bis(3-ethylbenzthiazoline-6-sulfonate) (ABTS) were 4.4 and 74.4 °C, respectively. Lacps1 was stable at pH 3.0–8.0, and after two hours at 55–60 °C, presenting high redox potential (0.747 V vs. NHE). ABTS was oxidized with an apparent affinity constant of 147.0 ± 6.4 μmol·L−1, maximum velocity of 413.4 ± 21.2 U·mg−1 and catalytic efficiency of 3140.1 ± 149.6 L·mmol−1·s−1. The maximum decolorization percentages of bromophenol blue (BPB), remazol brilliant blue R and reactive blue 4 (RB4), at 25 or 40 °C without redox mediators, reached 90%, 80% and 60%, respectively, using either pure Lacps1 or the crude extract. This is the first study of the decolorization of BPB and RB4 by a P. sanguineus laccase. The data suggested good potential for treatment of industrial dye-containing effluents.
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Bilal M, Asgher M. Sandal reactive dyes decolorization and cytotoxicity reduction using manganese peroxidase immobilized onto polyvinyl alcohol-alginate beads. Chem Cent J 2015; 9:47. [PMID: 26379768 PMCID: PMC4570624 DOI: 10.1186/s13065-015-0125-0] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 09/01/2015] [Indexed: 12/07/2022] Open
Abstract
Background Fungal manganese peroxidases (MnPs) have great potential as bio-remediating agents and can be used continuously in the immobilized form like many other enzymes. Results In the present study, purified manganese peroxidase (MnP) enzyme isolated from Ganoderma lucidum IBL-05 was immobilized onto polyvinyl alcohol-alginate beads and investigated its potential for the decolorization and detoxification of new class of reactive dyes and textile wastewater. The optimal conditions for MnP immobilization were 10 % (w/v) PVA, 1.5 % sodium alginate, 3 % boric acid and 2 % CaCl2 solution. The optimum pH, temperature and kinetic parameters (Km and Vmax) for free and immobilized MnP were found to be significantly altered after immobilization. The immobilized MnP showed high decolorization efficiency for Sandal reactive dyes (78.14–92.29 %) and textile wastewater (61–80 %). Reusability studies showed that after six consecutive dye decolorization cycles, the PVA coupled MnP retained more than 60 % of its initial activity (64.9 % after 6th cycle form 92.29 % in 1st cycle) for Sandal-fix Foron Blue E2BLN dye. The water quality assurance parameters (BOD, COD and TOC) and cytotoxicity (haemolytic and brine shrimp lethality tests) studies before and after treatment were employed and results revealed that both the dyes aqueous solution and textile wastewater were cytotoxic that reduced significantly after treatment. Conclusions The decolorization and cytotoxicity outcomes indicated that immobilized MnP in PVA–alginate beads can be efficiently exploited for industrial and environmental applications, especially for remediation of textile dyes containing wastewater effluents. Dye decolorizing potential of immobilized MnP ![]()
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Affiliation(s)
- Muhammad Bilal
- Industrial Biotechnology Laboratory, Department of Biochemistry, University of Agriculture, Faisalabad, Pakistan
| | - Muhammad Asgher
- Industrial Biotechnology Laboratory, Department of Biochemistry, University of Agriculture, Faisalabad, Pakistan
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Guo M, Jia R, Yang X. Decolorization of the azo dye Acid Red 18 by crude manganese peroxidase: Effect of system parameters and kinetic study. BIOCATAL BIOTRANSFOR 2014. [DOI: 10.3109/10242422.2014.974575] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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