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Abdi Dezfouli R, Esmaeilidezfouli E. Optimizing laccase selection for enhanced outcomes: a comprehensive review. 3 Biotech 2024; 14:165. [PMID: 38817737 PMCID: PMC11133268 DOI: 10.1007/s13205-024-04015-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Accepted: 05/21/2024] [Indexed: 06/01/2024] Open
Abstract
Despite their widespread applications in sectors such as pulp and paper, textile, food and beverage, pharmaceuticals, and biofuel production, laccases encounter challenges related to their activity and stability under varying reaction conditions. This review accumulates data on the complex interplay between laccase characteristics and reaction conditions for maximizing their efficacy in diverse biotechnological processes. Benefits of organic media such as improved substrate selectivity and reaction control, and their risks such as enzyme denaturation and reduced activity are reported. Additionally, the effect of reaction conditions such as pH and temperature on laccase activity and stability are gathered and reported. Sources like Bacillus pumilus, Alcaligenes faecalis, Bacillus clausii, and Bacillus tequilensis SN4 are producing laccases that are both thermo-active and alkali-active. Additionally, changes induced by the presence of various substances within reaction media such as metals, inhibitors, and organic solvents are also reported. Bacillus pumilus and Bacillus licheniformis LS04 produce the most resistant laccases in this case. Finally, the remarkable laccases have been highlighted and the proper laccase source for each industrial application is suggested. Supplementary Information The online version contains supplementary material available at 10.1007/s13205-024-04015-5.
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Affiliation(s)
- Ramin Abdi Dezfouli
- Pharmaceutical Biotechnology Department, Faculty of Pharmacy and Pharmaceutical Sciences, Tehran University of Medical Sciences, Tehran, 1411413137, Iran
| | - Ensieh Esmaeilidezfouli
- Microbial Biotechnology Research Center, Science and Research Branch, Islamic Azad University, Tehran, Iran
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Ariaeenejad S, Barani M, Sarani M, Lohrasbi-Nejad A, Mohammadi-Nejad G, Salekdeh GH. Green synthesis of NiO NPs for metagenome-derived laccase stabilization: Detoxifying pollutants and wastes. Int J Biol Macromol 2024; 266:130986. [PMID: 38508564 DOI: 10.1016/j.ijbiomac.2024.130986] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 03/13/2024] [Accepted: 03/16/2024] [Indexed: 03/22/2024]
Abstract
Laccases play a crucial role in neutralizing environmental pollutants, including antibiotics and phenolic compounds, by converting them into less harmful substances via a unique oxidation process. This study introduces an environmentally sustainable remediation technique, utilizing NiO nanoparticles (NPs) synthesized through green chemistry to immobilize a metagenome-derived laccase, PersiLac1, enhancing its application in pollutant detoxification. Salvadora persica leaf extract was used for the synthesis of NiO nanoparticles, utilizing its phytochemical constituents as reducing and capping agents, followed by characterization through different analyses. Characterization of NiO nanoparticles revealed distinctive FTIR absorption peaks indicating the nanoparticulate structure, while FESEM showed structured NiO with robust interconnections and dimensionality of about 50nm, confirmed by EDX analysis to have a consistent distribution of Ni and O. The immobilized PersiLac1 demonstrated enhanced thermal stability, with 85.55 % activity at 80 °C and reduced enzyme leaching, retaining 67.93 % activity across 15 biocatalytic cycles. It efficiently reduced rice straw (RS) phenol by 67.97 % within 210 min and degraded 70-78 % of tetracycline (TC) across a wide pH range (4.0-8.0), showing superior performance over the free enzyme. Immobilized laccase achieved up to 71 % TC removal at 40-80 °C, significantly outperforming the free enzyme. Notably, 54 % efficiency was achieved at 500 mg/L TC by immobilized laccase at 120 min. This research showed the potential of green-synthesized NiO nanoparticles to effectively immobilize laccase, presenting an eco-friendly approach to purify pollutants such as phenols and antibiotics. The durability and reusability of the immobilized enzyme, coupled with its ability to reduce pollutants, indicates a viable method for cleaning the environment. Nonetheless, the production costs and scalability of NiO nanoparticles for widespread industrial applications pose significant challenges. Future studies should focus on implementation at an industrial level and examine a wider range of pollutants to fully leverage the environmental clean-up capabilities of this innovative technology.
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Affiliation(s)
- Shohreh Ariaeenejad
- Department of Systems and Synthetic Biology, Agricultural Biotechnology Research Institute of Iran (ABRII), Agricultural Research Education and Extension Organization (AREEO), Karaj, Iran.
| | - Mahmood Barani
- Medical Mycology and Bacteriology Research Center, Kerman University of Medical Sciences, 76169-13555 Kerman, Iran.
| | - Mina Sarani
- Zabol Medicinal Plants Research Center, Zabol University of Medical Sciences, Zabol, Iran
| | - Azadeh Lohrasbi-Nejad
- Department of Agricultural Biotechnology, Shahid Bahonar University of Kerman, Kerman, Iran; Research and Technology Institute of Plant Production, Shahid Bahonar University of Kerman, Kerman, Iran
| | - Ghasem Mohammadi-Nejad
- Department of Agronomy and Plant Breeding, College of Agriculture, Shahid Bahonar University of Kerman, Kerman, Iran; Research and Technology Institute of Plant Production, Shahid Bahonar University of Kerman, Kerman, Iran
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de Fátima NG, Barriga A, Cáceres JC, Pinto E, Cabrera R. Oxidation of chlortetracycline and its isomers by Botrytis aclada laccase in the absence of mediators: pH dependence and identification of transformation products by LC-MS. Biodegradation 2024; 35:155-171. [PMID: 37428416 DOI: 10.1007/s10532-023-10046-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Accepted: 06/09/2023] [Indexed: 07/11/2023]
Abstract
Tetracyclines are antibiotics considered emerging pollutants and currently, wastewater treatment plants are not able to remove them efficiently. Laccases are promising enzymes for bioremediation because they can oxidize a wide variety of substrates. The aim of this study was to evaluate the Botrytis aclada laccase for the oxidation of chlortetracycline and its isomers in the absence of a mediator molecule, at a pH range between 3.0 to 7.0, and to characterize the transformation products by LC-MS. Chlortetracycline and three isomers were detected in both, controls and reaction mixtures at 0 h and in controls after 48 h of incubation but in different proportions depending on pH. An additional isomer was also detected, but only in the presence of BaLac. Based on the transformation products identified in the enzymatic reactions and information from literature, we assembled a network of transformation pathways starting from chlortetracycline and its isomers. The spectrometric analysis of the products indicated the probable occurrence of oxygen insertion, dehydrogenation, demethylation and deamination reactions. Four new products were identified, and we also described a novel transformation product without the chloro group. We observed that increasing pH led to higher diversity of main products. This is the first study using the laccase from fungi Botrytis aclada to oxidate chlortetracycline and its isomers and it can be considered as an ecological alternative to be used in bioremediation processes such as wastewater.
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Affiliation(s)
- Nadia Gavilán de Fátima
- Laboratorio de Bioquímica y Biología Molecular, Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Ñuñoa, Santiago, Chile
- Unidad de Espectrometría de Masas-CEPEDEQ, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santos Dumont 964, Independencia, Santiago, Chile
| | - Andrés Barriga
- Unidad de Espectrometría de Masas-CEPEDEQ, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santos Dumont 964, Independencia, Santiago, Chile
| | - Juan Carlos Cáceres
- Laboratorio de Bioquímica y Biología Molecular, Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Ñuñoa, Santiago, Chile
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, CA, USA
| | - Ernani Pinto
- Centro de Energia Nuclear na Agricultura, Universidade de São Paulo, Av. Pádua Dias 11, Piracicaba, SP, Brasil
| | - Ricardo Cabrera
- Laboratorio de Bioquímica y Biología Molecular, Departamento de Biología, Facultad de Ciencias, Universidad de Chile, Las Palmeras 3425, Ñuñoa, Santiago, Chile.
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Zhang LB, Qiu TT, Qiu XG, Yang WWJ, Ye XY, Meng C. Transcriptomic and metabolomic analysis unveils a negative effect of glutathione metabolism on laccase activity in Cerrena unicolor 87613. Microbiol Spectr 2024; 12:e0340523. [PMID: 38230929 PMCID: PMC10846260 DOI: 10.1128/spectrum.03405-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2023] [Accepted: 12/08/2023] [Indexed: 01/18/2024] Open
Abstract
The white rot fungus Cerrena unicolor 87613 has been previously shown to be a promising resource in laccase production, an enzyme with significant biotechnological applications. Conventional methods face technical challenges in improving laccase activity. Attempts are still being made to develop novel approaches for further enhancing laccase activity. This study aimed to understand the regulation of laccase activity in C. unicolor 87613 for a better exploration of the novel approach. Transcriptomic and metabolomic analyses were performed to identify key genes and metabolites involved in extracellular laccase activity. The findings indicated a strong correlation between the glutathione metabolism pathway and laccase activity. Subsequently, experimental verifications were conducted by manipulating the pathway using chemical approaches. The additive reduced glutathione (GSH) dose-dependently repressed laccase activity, while the GSH inhibitors (APR-246) and reactive oxygen species (ROS) inducer (H2O2) enhanced laccase activity. Changes in GSH levels could determine the intracellular redox homeostasis in interaction with ROS and partially affect the expression level of laccase genes in C. unicolor 87613 in turn. In addition, GSH synthetase was found to mediate GSH abundance in a feedback loop. This study suggests that laccase activity is negatively influenced by GSH metabolism and provides a theoretical basis for a novel strategy to enhance laccase activity by reprogramming glutathione metabolism at a specific cultivation stage.IMPORTANCEThe production of laccase activity is limited by various conventional approaches, such as heterologous expression, strain screening, and optimization of incubation conditions. There is an urgent need for a new strategy to meet industrial requirements more effectively. In this study, we conducted a comprehensive analysis of the transcriptome and metabolome of Cerrena unicolor 87613. For the first time, we discovered a negative role played by reduced glutathione (GSH) and its metabolic pathway in influencing extracellular laccase activity. Furthermore, we identified a feedback loop involving GSH, GSH synthetase gene, and GSH synthetase within this metabolic pathway. These deductions were confirmed through experimental investigations. These findings not only advanced our understanding of laccase activity regulation in its natural producer but also provide a theoretical foundation for a strategy to enhance laccase activity by reprogramming glutathione metabolism at a specific cultivation stage.
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Affiliation(s)
- Long-Bin Zhang
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fujian, China
- College of Biological Science and Engineering, Fuzhou University, Fujian, China
| | - Ting-Ting Qiu
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fujian, China
- College of Biological Science and Engineering, Fuzhou University, Fujian, China
| | - Xiu-Gen Qiu
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fujian, China
- College of Biological Science and Engineering, Fuzhou University, Fujian, China
| | - Wu-Wei-Jie Yang
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fujian, China
- College of Biological Science and Engineering, Fuzhou University, Fujian, China
| | - Xiu-Yun Ye
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fujian, China
- College of Biological Science and Engineering, Fuzhou University, Fujian, China
| | - Chun Meng
- The Key Laboratory of Marine Enzyme Engineering of Fujian Province, Fuzhou University, Fujian, China
- College of Biological Science and Engineering, Fuzhou University, Fujian, China
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Zheng X, Chen F, Zhu Y, Zhang X, Li Z, Ji J, Wang G, Guan C. Laccase as a useful assistant for maize to accelerate the phenanthrene degradation in soil. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:4848-4863. [PMID: 38105330 DOI: 10.1007/s11356-023-31515-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 12/08/2023] [Indexed: 12/19/2023]
Abstract
Polycyclic aromatic hydrocarbon (PAH) pollution has attracted much attention due to their wide distribution in soil environment and serious harm to human health. In order to establish an efficient and eco-friendly technology for remediation of PAH-contaminated soil, phytoremediation utilizing maize assisted with enzyme remediation was explored in this study. The results showed that the participation of laccase could promote the degradation of phenanthrene (PHE) from soil and significantly reduce the accumulation of PHE in maize. The degradation efficiency of PHE in soil could reach 77.19% under laccase-assisted maize remediation treatment, while the accumulation of PHE in maize roots and leaves decreased by 41.23% and 74.63%, respectively, compared to that without laccase treatment, after 24 days of maize cultivation. Moreover, it was found that laccase addition shifted the soil microbial community structure and promoted the relative abundance of some PAH degrading bacteria, such as Pseudomonas and Sphingomonas. In addition, the activities of some enzymes that were involved in PAH degradation process and soil nutrient cycle increased with the treatment of laccase enzyme. Above all, the addition of laccase could not only improve the removal efficiency of PHE in soil, but also alter the soil environment and reduce the accumulation of PHE in maize. This study provided new perspective for exploring the efficiency of the laccase-assisted maize in the remediation of contaminated soil, evaluating the way for reducing the risk of secondary pollution of plants in the phytoremediation process.
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Affiliation(s)
- Xiaoyan Zheng
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Fenyan Chen
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Yalan Zhu
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Xiaoge Zhang
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Zhiman Li
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Jing Ji
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Gang Wang
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China
| | - Chunfeng Guan
- School of Environmental Science and Engineering, Tianjin University, 92 Weijin Road, Tianjin, 300072, China.
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Takur KR, Kohli M, Pande K, Malik A, Deshmukh A, Kayal A, Kommoju PR, Kulkarni N. In silico studies disclose the underlying link between binding affinity and redox potential in laccase isoforms. J Biomol Struct Dyn 2023; 41:7265-7276. [PMID: 36102280 DOI: 10.1080/07391102.2022.2120540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Accepted: 08/24/2022] [Indexed: 10/14/2022]
Abstract
Laccases are copper-containing enzymes belonging to the family of multicopper oxidases (MCOs). All MCOs use molecular oxygen to oxidize a wide range of organic compounds by radical catalysis. One of the key fundamental properties of laccases is having high or low redox potentials depending on the active site organization. Several experimental studies have been done to rationalize the high and low redox potential laccases (LRPL), however, molecular understanding is still lacking. In this work, we explored the proteomic profile of laccases produced in the fungal cultures, specifically induced with lignocellulosic biomass such as rice straw. This study was undertaken to explain the differences in the high redox and low redox potential values of different laccases using in-silico approaches. Proteomic profiling and structural and sequence analysis revealed a low level of similarity among them. Docking analyses and molecular dynamics simulation analysis revealed that high redox potential laccases (HRPL) are having good binding affinity compared to low or medium redox potential laccases (MRPL). The stability of these complexes was further analyzed based on reactive distances, active site volume comparison and a number of tunnel formations that were observed to be significantly higher for HRPL. Our results indicate that the number of tunnel formations calculated from the simulation's trajectories and available water molecules at the T3 site directly correlates with the laccases' redox potentials. This study will be helpful and provide valuable inputs for the designing of new laccases to improve lignin degradation.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
| | | | | | | | - Apoorva Deshmukh
- Praj Matrix R & D Centre, Division of Praj Industries Ltd, Pune, India
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Chakraborty D, Chatterjee S, Althuri A, Palani SG, Venkata Mohan S. Sustainable enzymatic treatment of organic waste in a framework of circular economy. BIORESOURCE TECHNOLOGY 2023; 370:128487. [PMID: 36528180 DOI: 10.1016/j.biortech.2022.128487] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 12/10/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
Enzymatic treatment of food and vegetable waste (FVW) is an eco-friendly approach for producing industrially relevant value-added products. This review describes the sources, activities and potential applications of crucial enzymes in FVW valorization. The specific roles of amylase, cellulase, xylanase, ligninase, protease, pectinase, tannase, lipase and zymase enzymes were explained. The exhaustive list of value-added products that could be produced from FVW is presented. FVW valorization through enzymatic and whole-cell enzymatic valorization was compared. The note on global firms specialized in enzyme production reiterates the economic importance of enzymatic treatment. This review provides information on choosing an efficient enzymatic FVW treatment strategy, such as nanoenzyme and cross-linked based enzyme immobilization, to make the process viable, sustainable and cheaper. Finally, the importance of life cycle assessment of enzymatic valorization of FVW was impressed to prove this approach is a better option to shift from a linear to a circular economy.
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Affiliation(s)
- Debkumar Chakraborty
- Bioengineering and Environmental Sciences Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India
| | - Sulogna Chatterjee
- Bioengineering and Environmental Sciences Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Avanthi Althuri
- Bioengineering and Environmental Sciences Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India; Department of Biotechnology, Indian Institute of Technology Hyderabad, Kandi, Sangareddy-502284, Telangana, India
| | - Sankar Ganesh Palani
- Environmental Biotechnology Laboratory, Department of Biological Sciences, Birla Institute of Technology and Science, Pilani, Hyderabad Campus 500078, India
| | - S Venkata Mohan
- Bioengineering and Environmental Sciences Lab, Department of Energy and Environmental Engineering, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500007, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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Lee AA, Gervasio ED, Hughes RO, Maalouf AA, Musso SA, Crisalli AM, Woolridge EM. Alginate Encapsulation Stabilizes Xylanase Toward the Laccase Mediator System. Appl Biochem Biotechnol 2022; 195:3311-3326. [PMID: 36585551 DOI: 10.1007/s12010-022-04296-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/16/2022] [Indexed: 01/01/2023]
Abstract
Xylanase, a hydrolytic enzyme, is susceptible to inactivation by the oxidative conditions generated by the laccase mediator system (LMS). Given the impetus to develop a mixed enzyme system for application in biomass processing industries, xylanase was encapsulated with either Cu2+- or Ca2+-alginate and then exposed to the LMS with variations such as mediator type, mediator concentration, and treatment pH. Results demonstrate that alginate-encapsulated xylanase retains substantial activity (> 80%) when exposed to the LMS relative to non-encapsulated xylanase. Cu2+-alginate generally provided better protection than Ca2+-alginate for all mediators, and protection was observed even at a low pH, where the LMS is most potent. Despite encapsulation, xylanase was still capable of hydrolyzing its polymeric substrate xylan, given kcat/Km values within an order of magnitude of that for non-encapsulated xylanase. The alginate matrix does not impede the function of the oxidized mediator, since comparable Vmax values were observed for the conversion of veratryl alcohol to veratraldehyde by free and Cu2+-alginate encapsulated laccase. Overall, these results support development of a mixed enzyme system for biomass delignification and, more broadly, show potential for protecting protein function in an oxidative environment.
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Affiliation(s)
- Annemarie A Lee
- Department of Chemistry, Biochemistry, & Physics, Marist College, Poughkeepsie, NY, 12601, USA
| | - Esabelle D Gervasio
- Department of Chemistry, Biochemistry, & Physics, Marist College, Poughkeepsie, NY, 12601, USA
| | - Riley O Hughes
- Department of Chemistry, Biochemistry, & Physics, Marist College, Poughkeepsie, NY, 12601, USA
| | - Alexandra A Maalouf
- Department of Chemistry, Biochemistry, & Physics, Marist College, Poughkeepsie, NY, 12601, USA
| | - Samantha A Musso
- Department of Chemistry, Biochemistry, & Physics, Marist College, Poughkeepsie, NY, 12601, USA
| | - Alicia M Crisalli
- Department of Chemistry, Biochemistry, & Physics, Marist College, Poughkeepsie, NY, 12601, USA
| | - Elisa M Woolridge
- Department of Chemistry, Biochemistry, & Physics, Marist College, Poughkeepsie, NY, 12601, USA.
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Yuliana T, Putri RA, Hanidah I, Mardawati E, Tjaturina H. Purification and Characterization Laccase from Trametes versicolor (L.) Lloyd in Submerged Fermentation. Pak J Biol Sci 2022; 25:1077-1084. [PMID: 36978275 DOI: 10.3923/pjbs.2022.1077.1084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
<b>Background and Objective:</b> Laccase is classified as an oxidoreductase enzyme that catalyzes oxidation reactions of phenolic groups by using oxygen as its electron acceptor. Laccase isolated from <i>Trametes versicolor</i> (L.) Lloyd has a wide range of applications in the industrial sector. The use of enzymes in the industrial sector requires pure enzyme conditions from impurities so that the enzyme can maximize its ability in converting the substrate. This study aims to obtain enzyme activity and the characteristic of purified laccase enzymes isolated from <i>Trametes versicolor</i> (L.) Lloyd. <b>Materials and Methods:</b> This study was conducted with an experimental method followed by descriptive analysis. The steps of this research consist of a qualitative assay of laccase enzyme, crude laccase extract desalting by Sephadex G-25, laccase purification by Sephadex G-100 and laccase optimum pH characterization. <b>Results:</b> The result of this study showed that purification of laccase from <i>Trametes versicolor </i>(L.) Lloyd with Sephadex G-25 increases laccase enzyme-specific activity which is 10.966 U mg<sup>1</sup> and reaches 2.93-fold purity. The highest laccase enzyme activity was achieved at pH 4 with a value of laccase activity 62.39 U L<sup>1</sup>. <b>Conclusion:</b> Based on current results, purifying laccase from <i>Trametes versicolor </i>(L.) Lloyd with Sephadex G-25 was recommended which resulting higher enzyme specific activity.
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Cardullo N, Muccilli V, Tringali C. Laccase-mediated synthesis of bioactive natural products and their analogues. RSC Chem Biol 2022; 3:614-647. [PMID: 35755186 PMCID: PMC9175115 DOI: 10.1039/d1cb00259g] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2021] [Accepted: 04/14/2022] [Indexed: 11/21/2022] Open
Abstract
Laccases are a class of multicopper oxidases that catalyse the one-electron oxidation of four equivalents of a reducing substrate, with the concomitant four-electron reduction of dioxygen to water. Typically, they catalyse many anabolic reactions, in which mostly phenolic metabolites were subjected to oxidative coupling. Alternatively, laccases catalyse the degradation or modification of biopolymers like lignin in catabolic processes. In recent years, laccases have proved valuable and green biocatalysts for synthesising compounds with therapeutic value, including antitumor, antibiotic, antimicrobial, and antioxidant agents. Further up to date applications include oxidative depolymerisation of lignin to gain new biomaterials and bioremediation processes of industrial waste. This review summarizes selected examples from the last decade's literature about the laccase-mediated synthesis of biologically active natural products and their analogues; these will include lignans and neolignans, dimeric stilbenoids, biflavonoids, biaryls and other compounds of potential interest for the pharmaceutical industry. In addition, a short section about applications of laccases in natural polymer modification has been included.
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Affiliation(s)
- Nunzio Cardullo
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania V.le A. Doria 6 95125-Catania Italy +39-095-580138 +39-095-7385041 +39-095-7385025
| | - Vera Muccilli
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania V.le A. Doria 6 95125-Catania Italy +39-095-580138 +39-095-7385041 +39-095-7385025
| | - Corrado Tringali
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania V.le A. Doria 6 95125-Catania Italy +39-095-580138 +39-095-7385041 +39-095-7385025
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Enzymatically triggered delignification through a novel stable laccase: A mixed in-silico /in-vitro exploration of a complex environmental microbiota. Int J Biol Macromol 2022; 211:328-341. [PMID: 35551951 DOI: 10.1016/j.ijbiomac.2022.05.039] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 04/20/2022] [Accepted: 05/05/2022] [Indexed: 11/23/2022]
Abstract
Laccases have been broadly applied as a multitasking biocatalyst in various industries, but their applications tend to be limited by easy deactivation, lack of adequate stability, and susceptibility under complex conditions. Identifying stable laccase as a green-biocatalyst is crucial for developing cost-effective biorefining processes. In this direction, we attempted in-silico screening a stable metagenome-derived laccase (PersiLac1) from tannery wastewater in a complex environment. The laccase exhibited high thermostability, retaining 53.19% activity after 180 min at 70 °C, and it was stable in a wide range of pH (4.0-9.0). After 33 days of storage at 50°C, pH 6.0, the enzyme retained 71.65% of its activity. Various metal ions, inhibitors, and organic solvents showed that PersiLac1 has a stable structure. The stable PersiLac1 could successfully remove lignin and phenolic from quinoa husk and rice straw. In the separate hydrolysis and fermentation process (SHF) after 72 h, hydrolysis was obtained 100% and 73.4% for quinoa husk and rice straw, and fermentation by the S. cerevisiae was be produced 41.46 g/L and 27.75g/L ethanol, respectively. Results signified that the novel lignin-degrading enzyme was confirmed to have great potential for industrial application as a green-biocatalyst based on enzymatically triggered to delignification and detoxify lignocellulosic biomass.
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Sánchez-Quitian ZA, Quitian-Romero JC, Moreno-Buitrago AT, Montoya Barreto S, Sanjuan T, Ortiz-Rosas JP. Isolation and characterization of wood-decomposing basidiomycetes from the Andean Forest in Boyacá, Colombia. Braz J Microbiol 2022; 53:1425-1437. [PMID: 35446011 PMCID: PMC9433503 DOI: 10.1007/s42770-022-00760-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Accepted: 04/13/2022] [Indexed: 11/02/2022] Open
Abstract
This study explores the biotechnological potential of lignocellulolytic fungi collected in an oak forest. Fungal collections were obtained from natural reserves located in Boyacá-Colombia, ranging from 2700 to 3000 m.a.s.l. Twenty-three strains were isolated on malt agar, molecular characterization was performed, and ligninolytic and cellulolytic enzymatic activities were screened. Several white-rot fungi of biotechnological importance were identified as follows: Trametes sp., Trametes versicolor, Trametes villosa, Pycnoporus sanguineus, Bjerkandera adjusta, Lentinula boryana, Panus conchatus, Antrodia neotropica, Brunneoporus malicola, Laetiporus gilbertsonii, Stereum sp., Ganoderma sp., and Dichomitus sp. The strains T. versicolor 0554 and 0583, T. villosa 0562, and B. adusta 0556 showed the highest response in the qualitative enzymatic assays. These strains were used to determine their ability to decolorate the dyes aniline blue and Congo red, and it was found that T. villosa 0562 reached a level of decolorization close to 90% after 48 h of submerged culture. The fungal strains obtained here could offer alternatives to develop a process to accomplish sustainable development objectives.
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13
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Clark M, Tepper K, Petroll K, Kumar S, Sunna A, Maselko M. Bioremediation of Industrial Pollutants by Insects Expressing a Fungal Laccase. ACS Synth Biol 2022; 11:308-316. [PMID: 34882406 DOI: 10.1021/acssynbio.1c00427] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Inadequate management of household and industrial wastes poses major challenges to human and environmental health. Advances in synthetic biology may help address these challenges by engineering biological systems to perform new functions such as biomanufacturing of high-value compounds from low-value waste streams and bioremediation of industrial pollutants. The current emphasis on microbial systems for biomanufacturing, which often requires highly preprocessed inputs and sophisticated infrastructure, is not feasible for many waste streams. Furthermore, concerns about transgene biocontainment have limited the release of engineered microbes or plants for bioremediation. Engineering of animals may provide opportunities for utilizing various waste streams that are not suitable for microbial biomanufacturing while effective transgene biocontainment options should enable in situ bioremediation. Here, we engineer the model insect Drosophila melanogaster to express a functional laccase from the fungus Trametes trogii. Laccase-expressing flies reduced concentrations of the endocrine disruptor bisphenol A by more than 50% when present in their growth media. A lyophilized powder prepared from engineered adult flies retained substantial enzymatic activity, degrading more than 90% of bisphenol A and the textile dye indigo carmine in aqueous solutions. Our results demonstrate that transgenic animals may be used to bioremediate environmental contaminants in vivo and serve as novel production platforms for industrial enzymes. These results support further development of insects, and possibly other animals, as bioproduction platforms and their potential use in bioremediation.
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Affiliation(s)
- Michael Clark
- Applied BioSciences, Macquarie University, Sydney, NSW 2109, Australia
| | - Kate Tepper
- Applied BioSciences, Macquarie University, Sydney, NSW 2109, Australia
| | - Kerstin Petroll
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia
| | - Sheemal Kumar
- Applied BioSciences, Macquarie University, Sydney, NSW 2109, Australia
| | - Anwar Sunna
- Department of Molecular Sciences, Macquarie University, Sydney, NSW 2109, Australia
- Biomolecular Discovery Research Centre, Macquarie University, Sydney, NSW 2109, Australia
| | - Maciej Maselko
- Applied BioSciences, Macquarie University, Sydney, NSW 2109, Australia
- Biomolecular Discovery Research Centre, Macquarie University, Sydney, NSW 2109, Australia
- CSIRO Synthetic Biology Future Science Platform, Brisbane 4001 QLD, Australia
- CSIRO Health and Biosecurity, Geelong, VIC 3219, Australia
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14
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Eminent Industrial and Biotechnological Applications of Laccases from Bacterial Source: a Current Overview. Appl Biochem Biotechnol 2022; 194:2336-2356. [DOI: 10.1007/s12010-021-03781-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/30/2021] [Indexed: 12/15/2022]
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15
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Espina G, Muñoz-Ibacache SA, Cáceres-Moreno P, Amenabar MJ, Blamey JM. From the Discovery of Extremozymes to an Enzymatic Product: Roadmap Based on Their Applications. Front Bioeng Biotechnol 2022; 9:752281. [PMID: 35096788 PMCID: PMC8790482 DOI: 10.3389/fbioe.2021.752281] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 11/22/2021] [Indexed: 11/20/2022] Open
Abstract
With the advent of the industrial revolution, the use of toxic compounds has grown exponentially, leading to a considerable pollution of the environment. Consequently, the development of more environmentally conscious technologies is an urgent need. Industrial biocatalysis appears as one potential solution, where a higher demand for more robust enzymes aims to replace toxic chemical catalysts. To date, most of the commercially available enzymes are of mesophilic origin, displaying optimal activity in narrow ranges of temperature and pH (i.e., between 20°C and 45°C, neutral pH), limiting their actual application under industrial reaction settings, where they usually underperform, requiring larger quantities to compensate loss of activity. In order to obtain novel biocatalysts better suited for industrial conditions, an efficient solution is to take advantage of nature by searching and discovering enzymes from extremophiles. These microorganisms and their macromolecules have already adapted to thrive in environments that present extreme physicochemical conditions. Hence, extremophilic enzymes stand out for showing higher activity, stability, and robustness than their mesophilic counterparts, being able to carry out reactions at nonstandard conditions. In this brief research report we describe three examples to illustrate a stepwise strategy for the development and production of commercial extremozymes, including a catalase from an Antarctic psychrotolerant microorganism, a laccase from a thermoalkaliphilic bacterium isolated from a hot spring and an amine-transaminase from a thermophilic bacterium isolated from a geothermal site in Antarctica. We will also explore some of their interesting biotechnological applications and comparisons with commercial enzymes.
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Affiliation(s)
- Giannina Espina
- Fundación Biociencia, Santiago, Chile
- *Correspondence: Giannina Espina, ; Jenny M. Blamey,
| | | | | | | | - Jenny M. Blamey
- Fundación Biociencia, Santiago, Chile
- Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
- *Correspondence: Giannina Espina, ; Jenny M. Blamey,
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16
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Conversion of lignin-derived 3-methoxycatechol to the natural product purpurogallin using bacterial P450 GcoAB and laccase CueO. Appl Microbiol Biotechnol 2021; 106:593-603. [PMID: 34971410 DOI: 10.1007/s00253-021-11738-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2021] [Revised: 12/02/2021] [Accepted: 12/11/2021] [Indexed: 01/02/2023]
Abstract
Purpurogallin is a natural benzotropolone extracted from Quercus spp, which has antioxidant, anticancer, and anti-inflammatory properties. Purpurogallin is typically synthesized from pyrogallol using enzymatic or metal catalysts, neither economically feasible nor environmentally friendly. 3-Methoxycatechol (3-MC) is a lignin-derived renewable chemical with the potential to be a substrate for the biosynthesis of purpurogallin. In this study, we designed a pathway to produce purpurogallin from 3-MC. We first characterized four bacterial laccases and identified the laccase CueO from Escherichia coli, which converts pyrogallol to purpurogallin. Then, we used CueO and the P450 GcoAB reported to convert 3-MC to pyrogallol, to construct a method for producing purpurogallin directly from 3-MC. A total of 0.21 ± 0.05 mM purpurogallin was produced from 5 mM 3-MC by whole-cell conversion. This study provides a new method to enable efficient and sustainable synthesis of purpurogallin and offers new insights into lignin valorization. KEY POINTS: • Screening four bacterial laccases for converting pyrogallol to purpurogallin. • Laccase CueO from Escherichia coli presenting the activity for purpurogallin yield. • A novel pathway for converting lignin-derived 3-methoxycatechol to purpurogallin.
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17
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Differential proteomic analysis under pesticides stress and normal conditions in Bacillus cereus 2D. PLoS One 2021; 16:e0253106. [PMID: 34388169 PMCID: PMC8362991 DOI: 10.1371/journal.pone.0253106] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 07/25/2021] [Indexed: 11/21/2022] Open
Abstract
A potential pesticide degrading bacterial isolate (2D), showing maximum tolerance (450 mg∙L-1) for cypermethrin, fipronil, imidacloprid and sulfosulfuron was recovered from a pesticide contaminated agricultural field. The isolate degraded cypermethrin, imidacloprid, fipronil and sulfosulfuron in minimal salt medium with 94, 91, 89 and 86% respectively as revealed by high performance liquid chromatography (HPLC) and gas chromatography (GC) analysis after 15 days of incubation. Presence of cyclobutane, pyrrolidine, chloroacetic acid, formic acid and decyl ester as major intermediate metabolites of cypermethrin biodegradation was observed in gas chromatography mass spectrometry (GC-MS) analysis. Results based on 16S rDNA sequencing, and phylogenetic analysis showed maximum similarity of 2D with Bacillus cereus (Accession ID: MH341691). Stress responsive and catabolic/pesticide degrading proteins were over expressed in the presence of cypermethrin in bacteria. Enzymatic kinetics of laccase was deduced in the test isolate under normal and pesticide stress conditions which suggested that the production of enzyme was induced significantly in pesticide stress (163 μg.μL-1) as compare to normal conditions(29 μg.μL-1) while the Km value was decreased in pesticides stress condition (Km = 10.57 mM) and increases in normal condition (Km = 14.33 mM).Amplification of laccase gene showed a major band of 1200bp. The present study highlights on the potential of 2D bacterial strain i.e., high tolerance level of pesticide, effective biodegradation rate, and presence of laccase gene in bacterial strain 2D, could become a potential biological agent for large-scale treatment of mixture of pesticide (cypermethrin, fipronil, imidacloprid and sulfosulfuron) in natural environment (soil and water).
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18
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Liu S, Liu H, Shen C, Fang W, Xiao Y, Fang Z. Comparison of performances of different fungal laccases in delignification and detoxification of alkali-pretreated corncob for bioethanol production. J Ind Microbiol Biotechnol 2021; 48:6132310. [PMID: 33693714 PMCID: PMC9113415 DOI: 10.1093/jimb/kuab013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2020] [Accepted: 02/08/2021] [Indexed: 11/13/2022]
Abstract
The performance of the alkaline fungal laccase PIE5 (pH 8.5) in the
delignification and detoxification of alkali-pretreated corncob to produce
bioethanol was evaluated and compared with that of the neutral counterpart
(rLcc9, 6.5), with the acidic laccase rLacA (4.0) was used as an independent
control. Treatment with the three laccases facilitated bioethanol production
compared with their respective controls. The lignin contents of
alkali-pretreated corncob reduced from 4.06%, 5.06%, and
7.80% to 3.44%, 3.95%, and 5.03%, after PIE5, rLcc9,
and rLacA treatment, respectively. However, the performances of the laccases
were in the order rLacA > rLcc9 > PIE5
in terms of decreasing total phenol concentration (0.18, 0.36, and
0.67 g/l), boosting ethanol concentration (8.02, 7.51, and
7.31 g/l), and volumetric ethanol productivity (1.34, 0.94, and
0.91 g/l hr), and shortening overall fermentation time. Our
results would inform future attempts to improve laccases for ethanol production.
Furthermore, based on our data and the fact that additional procedures, such as
pH adjustment, are needed during neutral/alkaline fungal laccase treatment, we
suggest acidic fungal laccases may be a better choice than neutral/alkaline
fungal laccases in bioethanol production.
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Affiliation(s)
- Shenglong Liu
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China.,Anhui Key Laboratory of Modern Biomanufacturing, Hefei, Anhui 230601, China.,Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China
| | - Huan Liu
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China.,Anhui Key Laboratory of Modern Biomanufacturing, Hefei, Anhui 230601, China.,Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China
| | - Chen Shen
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China.,Anhui Key Laboratory of Modern Biomanufacturing, Hefei, Anhui 230601, China.,Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China
| | - Wei Fang
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China.,Anhui Key Laboratory of Modern Biomanufacturing, Hefei, Anhui 230601, China.,Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China
| | - Yazhong Xiao
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China.,Anhui Key Laboratory of Modern Biomanufacturing, Hefei, Anhui 230601, China.,Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China
| | - Zemin Fang
- School of Life Sciences, Anhui University, Hefei, Anhui 230601, China.,Anhui Key Laboratory of Modern Biomanufacturing, Hefei, Anhui 230601, China.,Anhui Provincial Engineering Technology Research Center of Microorganisms and Biocatalysis, Hefei, Anhui 230601, China.,Institute of Physical Science and Information Technology, Anhui University, Hefei, Anhui 230601, China
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19
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Tailor-made novel electrospun polystyrene/poly(d,l-lactide-co-glycolide) for oxidoreductases immobilization: Improvement of catalytic properties under extreme reaction conditions. Bioorg Chem 2021; 114:105036. [PMID: 34120021 DOI: 10.1016/j.bioorg.2021.105036] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2021] [Revised: 05/15/2021] [Accepted: 05/28/2021] [Indexed: 11/24/2022]
Abstract
Immobilized enzymes find applications in many areas such as pharmacy, medicine, food production and environmental protection. However, protecting these biocatalysts against harsh reaction conditions and retaining their enzymatic activity even after several biocatalytic cycles are major challenges. Properly selected supports and type of surface modifier therefore seem to be crucial for achieving high retention of catalytic activity of immobilized biomolecules. Here we propose production of novel composite electrospun fibers from polystyrene/poly(d,l-lactide-co-glycolide) (PS/PDLG) and its application as a support for immobilization of oxidoreductases such as alcohol dehydrogenase (ADH) and laccase (LAC). Two strategies of covalent binding, (i) (3-aminopropyl)triethoxysilane (APTES) with glutaraldehyde (GA) and (ii) polydopamine (PDA), were applied to attach oxidoreductases to PS/PDLG. The average fiber diameter was shown to increase from 1.252 µm to even 3.367 µm after enzyme immobilization. Effective production of PS/PDLG fibers and biomolecule attachment were confirmed by Fourier transform infrared spectroscopy analysis. The highest substrate conversion efficiency was observed at pH 6.5 and 5 for ADH and LAC, respectively, and at 25 °C for enzymes attached using the APTES + GA approach. Improvement of enzyme stabilization at high temperatures was confirmed in that relative activities of enzymes immobilized onto PS/PDLG fibers were over 20% higher than those of the free biomolecules, and enzyme leaching from the support using acetate and MES buffers was below 10 mg/g.
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20
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Zhuang M, Ren D, Guo H, Wang Z, Zhang S, Zhang X, Gong X. Degradation of 2,4-dichlorophenol contaminated soil by ultrasound-enhanced laccase. ENVIRONMENTAL TECHNOLOGY 2021; 42:1428-1437. [PMID: 31530251 DOI: 10.1080/09593330.2019.1669723] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Accepted: 09/13/2019] [Indexed: 06/10/2023]
Abstract
In this paper, ultrasound was used to enhance the degradation effect of laccase for 2,4-dichlorophenol (2,4-DCP) in soil. The degradation effect and mechanism of the ultrasound-enhanced laccase were investigated. From the results, the degradation rate of 2,4-DCP can reach as high as 51.7% under the following conditions: reaction period was 21 h, pH = 5.5, ultrasound power was 240 W, duty cycle was 50%, and moisture content was 50%. Using the ultrasound-enhanced laccase, the degradation rate of 2,4-DCP was significantly higher than that using only laccase or only ultrasound. In addition, when ultrasound was used, the optimum pH for the degradation of 2,4-DCP using laccase was increased, making the degradation technology more practical. The analysis results from high-performance liquid chromatography (HPLC) and gas chromatography-mass spectrometry (GC-MS) revealed the degradation pathway of 2,4-DCP in soil: first, 2,4-DCP gradually became phenol through dechlorination, then the small molecular organic matter was generated from the hydroxyl radical or laccase reaction.
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Affiliation(s)
- Mengjuan Zhuang
- College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Hubei, People's Republic of China
- Hubei Key Laboratory for Efficient Utilization and Agglomeration of metallurgic Mineral Resources, Hubei, People's Republic of China
| | - Dajun Ren
- College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Hubei, People's Republic of China
- Hubei Key Laboratory for Efficient Utilization and Agglomeration of metallurgic Mineral Resources, Hubei, People's Republic of China
| | - Huiwen Guo
- College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Hubei, People's Republic of China
- Hubei Key Laboratory for Efficient Utilization and Agglomeration of metallurgic Mineral Resources, Hubei, People's Republic of China
| | - Zhaobo Wang
- College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Hubei, People's Republic of China
- Hubei Key Laboratory for Efficient Utilization and Agglomeration of metallurgic Mineral Resources, Hubei, People's Republic of China
| | - Shuqin Zhang
- College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Hubei, People's Republic of China
- Hubei Key Laboratory for Efficient Utilization and Agglomeration of metallurgic Mineral Resources, Hubei, People's Republic of China
| | - Xiaoqing Zhang
- College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Hubei, People's Republic of China
- Hubei Key Laboratory for Efficient Utilization and Agglomeration of metallurgic Mineral Resources, Hubei, People's Republic of China
| | - Xiangyi Gong
- College of Resources and Environmental Engineering, Wuhan University of Science and Technology, Hubei, People's Republic of China
- Hubei Key Laboratory for Efficient Utilization and Agglomeration of metallurgic Mineral Resources, Hubei, People's Republic of China
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21
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Tingley JP, Low KE, Xing X, Abbott DW. Combined whole cell wall analysis and streamlined in silico carbohydrate-active enzyme discovery to improve biocatalytic conversion of agricultural crop residues. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:16. [PMID: 33422151 PMCID: PMC7797155 DOI: 10.1186/s13068-020-01869-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 12/24/2020] [Indexed: 05/08/2023]
Abstract
The production of biofuels as an efficient source of renewable energy has received considerable attention due to increasing energy demands and regulatory incentives to reduce greenhouse gas emissions. Second-generation biofuel feedstocks, including agricultural crop residues generated on-farm during annual harvests, are abundant, inexpensive, and sustainable. Unlike first-generation feedstocks, which are enriched in easily fermentable carbohydrates, crop residue cell walls are highly resistant to saccharification, fermentation, and valorization. Crop residues contain recalcitrant polysaccharides, including cellulose, hemicelluloses, pectins, and lignin and lignin-carbohydrate complexes. In addition, their cell walls can vary in linkage structure and monosaccharide composition between plant sources. Characterization of total cell wall structure, including high-resolution analyses of saccharide composition, linkage, and complex structures using chromatography-based methods, nuclear magnetic resonance, -omics, and antibody glycome profiling, provides critical insight into the fine chemistry of feedstock cell walls. Furthermore, improving both the catalytic potential of microbial communities that populate biodigester reactors and the efficiency of pre-treatments used in bioethanol production may improve bioconversion rates and yields. Toward this end, knowledge and characterization of carbohydrate-active enzymes (CAZymes) involved in dynamic biomass deconstruction is pivotal. Here we overview the use of common "-omics"-based methods for the study of lignocellulose-metabolizing communities and microorganisms, as well as methods for annotation and discovery of CAZymes, and accurate prediction of CAZyme function. Emerging approaches for analysis of large datasets, including metagenome-assembled genomes, are also discussed. Using complementary glycomic and meta-omic methods to characterize agricultural residues and the microbial communities that digest them provides promising streams of research to maximize value and energy extraction from crop waste streams.
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Affiliation(s)
- Jeffrey P Tingley
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, 5403-1st Avenue South, Lethbridge, AB, T1J 4B1, Canada
- Department of Biochemistry, University of Lethbridge, Lethbridge, AB, T1K 6T5, Canada
| | - Kristin E Low
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, 5403-1st Avenue South, Lethbridge, AB, T1J 4B1, Canada
| | - Xiaohui Xing
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, 5403-1st Avenue South, Lethbridge, AB, T1J 4B1, Canada
| | - D Wade Abbott
- Lethbridge Research and Development Centre, Agriculture and Agri-Food Canada, 5403-1st Avenue South, Lethbridge, AB, T1J 4B1, Canada.
- Department of Biochemistry, University of Lethbridge, Lethbridge, AB, T1K 6T5, Canada.
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22
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Espina G, Cáceres-Moreno P, Mejías-Navarrete G, Ji M, Sun J, Blamey JM. A novel and highly active recombinant spore-coat bacterial laccase, able to rapidly biodecolorize azo, triarylmethane and anthraquinonic dyestuffs. Int J Biol Macromol 2020; 170:298-306. [PMID: 33347931 DOI: 10.1016/j.ijbiomac.2020.12.123] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 12/01/2020] [Accepted: 12/16/2020] [Indexed: 01/18/2023]
Abstract
Laccases are enzymes able to catalyze the oxidation of a wide array of phenolic and non-phenolic compounds using oxygen as co-substrate and releasing water as by-product. They are well known to have wide substrate specificity and in recent years, have gained great biotechnological importance. To date, most well studied laccases are from fungal and mesophilic origin, however, enzymes from extremophiles possess an even greater potential to withstand the extreme conditions present in many industrial processes. This research work presents the heterologous production and characterization of a novel laccase from a thermoalkaliphilic bacterium isolated from a hot spring in a geothermal site. This recombinant enzyme exhibits remarkably high specific activity (>450,000 U/mg) at 70 °C, pH 6.0, using syringaldazine substrate, it is active in a wide range of temperature (20-90 °C) and maintains over 60% of its activity after 2 h at 60 °C. Furthermore, this novel spore-coat laccase is able to biodecolorize eight structurally different recalcitrant synthetic dyes (Congo red, methyl orange, methyl red, Coomassie brilliant blue R250, bromophenol blue, malachite green, crystal violet and Remazol brilliant blue R), in just 30 min at 40 °C in the presence of the natural redox mediator acetosyringone.
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Affiliation(s)
- Giannina Espina
- Fundación Biociencia, José Domingo Cañas 2280, Ñuñoa, Santiago, Chile.
| | | | | | - Minghua Ji
- Green Chemical Engineering Technology R&D Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Haike Road 99, Pudong, Shanghai 201210, China
| | - Junsong Sun
- Green Chemical Engineering Technology R&D Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Haike Road 99, Pudong, Shanghai 201210, China
| | - Jenny M Blamey
- Fundación Biociencia, José Domingo Cañas 2280, Ñuñoa, Santiago, Chile; Facultad de Química y Biología, Universidad de Santiago de Chile, Alameda 3363, Estación Central, Santiago, Chile.
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23
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Enzymatic characterization, molecular dynamics simulation, and application of a novel Bacillus licheniformis laccase. Int J Biol Macromol 2020; 167:1393-1405. [PMID: 33202275 DOI: 10.1016/j.ijbiomac.2020.11.093] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 10/20/2020] [Accepted: 11/12/2020] [Indexed: 02/01/2023]
Abstract
A new laccase gene from newly isolated Bacillus licheniformis TCCC 111219 was actively expressed in Escherichia coli. This recombinant laccase (rLAC) exhibited a high stability towards a wide pH range and high temperatures. 170% of the initial activity was detected at pH 10.0 after 10-d incubation, and 60% of the initial activity was even kept after 2-h incubation at 70 °C. It indicated that only single type of extreme environment, such as strong alkaline environment (300 K, pH 12) or high temperature (370 K, pH 7), did not show obvious impact on the structural stability of rLAC during molecular dynamics simulation process. But the four loop regions of rLAC where the active site is situated were seriously destroyed when strong alkaline and high temperature environment existed simultaneously (370 K, pH 12) because of the damage of hydrogen bonds and salt bridges. Moreover, this thermo- and alkaline-stable enzyme could efficiently decolorize the structurally differing azo, triphenylmethane, and anthraquinone dyes with appropriate mediator at pH 3.0, 7.0, and 9.0 at 60 °C. These rare characteristics suggested its high potential in industrial applications to decolorize textile dyeing effluent.
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24
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Amaly N, El-Moghazy AY, Si Y, Sun G. Functionalized nanofibrous nylon 6 membranes for efficient reusable and selective separation of laccase enzyme. Colloids Surf B Biointerfaces 2020; 194:111190. [DOI: 10.1016/j.colsurfb.2020.111190] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 06/02/2020] [Accepted: 06/08/2020] [Indexed: 12/20/2022]
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25
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Jiang Y, Chen Y, Tian D, Shen F, Wan X, Xu L, Chen Y, Zhang H, Hu J, Shen F. Fabrication and characterization of lignin-xylan hybrid nanospheres as pesticide carriers with enzyme-mediated release property. SOFT MATTER 2020; 16:9083-9093. [PMID: 32909581 DOI: 10.1039/d0sm01402h] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
Abstract
Lignin nanospheres (LNPs) are an emerging high-value material platform to realize lignin valorization. The modification or introduction of new functions to LNPs is of great significance to expand its downstream applications. This work evaluated the technical feasibility of preparing lignin-xylan hybrid nanospheres (LXNPs) through a simple solution-based self-assembly process, with the goal of achieving the application as pesticide carriers for enzyme-mediated controlled release. Hybrid LXNPs with various weigh ratios (lignin to xylan, 3 : 1, 1 : 1, 1 : 3) were obtained using deep eutectic solvent-extracted condensed lignin and water-insoluble xylan fragments, which exhibited a nanosphere size of about 166-210 nm with considerable stability in the pH range of 4-10. LXNPs with lignin to xylan ratios of 3 : 1 and 1 : 1 showed well-defined core-shell structures with enriched hydroxyl groups on the surface. It was proposed that lignin could anchor xylan fragments through van der Waals force and hydrophobic interactions between lignin phenylpropanes and xylan molecular backbones, thus facilitating the self-assembly process for the formation of this specific spherical structure. The resulting hydrophobic LXNPs core enabled the facile encapsulation of the biological pesticide avermectin (AVM) with 57.9-67.0% efficiency using one-pot synthesis. When these AVM-encapsulated LXNPs were subjected to enzymatic hydrolysis using xylanase, considerable AVM release of 44.8-55.1% was achieved after 16 h, in comparison to the 4.1% release only for those without xylanase. This work showed the high promise of fabricating hybrid LXNPs through the self-assembly process and also provided a universal nanosphere carrier for drug encapsulation and subsequent enzyme-mediated controlled release.
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Affiliation(s)
- Yuehan Jiang
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, P. R. China.
| | - Yiyi Chen
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, P. R. China.
| | - Dong Tian
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, P. R. China.
| | - Feiyue Shen
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, P. R. China.
| | - Xue Wan
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, P. R. China.
| | - Lu Xu
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, P. R. China.
| | - Yichu Chen
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, P. R. China.
| | - Haozhe Zhang
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, P. R. China.
| | - Jinguang Hu
- Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Dr NW, Calgary, AB T2N 1N4, Canada
| | - Fei Shen
- Institute of Ecological and Environmental Sciences, Sichuan Agricultural University, Chengdu, Sichuan 611130, P. R. China.
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Microorganisms and Enzymes Used in the Biological Pretreatment of the Substrate to Enhance Biogas Production: A Review. SUSTAINABILITY 2020. [DOI: 10.3390/su12177205] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The pretreatment of lignocellulosic biomass (LC biomass) prior to the anaerobic digestion (AD) process is a mandatory step to improve feedstock biodegradability and biogas production. An important potential is provided by lignocellulosic materials since lignocellulose represents a major source for biogas production, thus contributing to the environmental sustainability. The main limitation of LC biomass for use is its resistant structure. Lately, biological pretreatment (BP) gained popularity because they are eco-friendly methods that do not require chemical or energy input. A large number of bacteria and fungi possess great ability to convert high molecular weight compounds from the substrate into lower mass compounds due to the synthesis of microbial extracellular enzymes. Microbial strains isolated from various sources are used singly or in combination to break down the recalcitrant polymeric structures and thus increase biogasgeneration. Enzymatic treatment of LC biomass depends mainly on enzymes like hemicellulases and cellulases generated by microorganisms. The articles main purpose is to provide an overview regarding the enzymatic/biological pretreatment as one of the most potent techniques for enhancing biogas production.
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27
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Wang J, Chang F, Tang X, Li W, Yin Q, Yang Y, Hu Y. Bacterial laccase of Anoxybacillus ayderensis SK3-4 from hot springs showing potential for industrial dye decolorization. ANN MICROBIOL 2020. [DOI: 10.1186/s13213-020-01593-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Introduction
Laccases are green biocatalysts that possess attractive for the treatment of resistant environmental pollutants and dye effluents.
Purpose
To exploit the laccase of Anoxybacillus ayderensis SK3-4 that possesses dye decolorization ability at room and higher temperature, we characterized the enzyme in considerable detail and investigated its ability to decolorize different dyes.
Results
A bacterial laccase gene designed as LacAn from Anoxybacillus ayderensis SK3-4 of hot springs was cloned and expressed in Escherichia coli. LacAn is a monomeric protein with a molecular weight of 29.8 kDa. The optimum pH and temperature for syringaldazine oxidation were 7.0 and 75 °C, respectively. LacAn was stable at pH values ranging from 6.5 to 8.5 above 65 °C. The enzyme activity was significantly enhanced by Cu2+ and Mg2+ but inhibited by Zn2+ and Fe2+. Furthermore, LacAn showed high decolorization capability toward five dyes (direct blue 6, acid black 1, direct green 6, direct black 19, and acid blue 93) in the absence of redox mediators. It also demonstrated a wide temperature range, and it can retain its high decolorization ability even at high temperatures.
Conclusions
These properties including better enzymatic properties and efficiency to decolorize dyes demonstrate that the bacterial laccase LacAn has potentials for further industrial applications.
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Durán-Aranguren D, Chiriví-Salomón J, Anaya L, Durán-Sequeda D, Cruz L, Serrano J, Sarmiento L, Restrepo S, Sanjuan T, Sierra R. Effect of bioactive compounds extracted from Cordyceps nidus ANDES-F1080 on laccase activity of Pleurotus ostreatus ANDES-F515. BIOTECHNOLOGY REPORTS (AMSTERDAM, NETHERLANDS) 2020; 26:e00466. [PMID: 32617265 PMCID: PMC7322798 DOI: 10.1016/j.btre.2020.e00466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/12/2019] [Revised: 04/21/2020] [Accepted: 05/04/2020] [Indexed: 06/11/2023]
Abstract
Laccases are ligninolytic enzymes produced by different microorganisms, especially by fungi such as the white-rot fungus Pleurotus ostreatus. Chemical inductors have been used to promote laccase secretion due to the application of these enzymes in lignocellulosic biomass pretreatment. Cordyceps nidus ANDES-F1080 was previously described as a source of bioactive compounds that could influence the enzymatic production system of other fungi. For that reason, this study evaluates the effect of C. nidus' ANDES-F1080 extracts on the laccase activity of P. ostreatus ANDES-F515. To achieve this objective, C. nidus ANDES-F1080 was grown in four different substrates: two artificial-based and two natural-based culture media. Metabolites were extracted from C. nidus ANDES-F1080 using water and methanol as solvents. Biochemical characterization of these extracts was performed to complement the analysis of their effect on laccase activity. Our results revealed an enhancement on the laccase activity of P. ostreatus ANDES-F515 grown in natural-based cultures when C. nidus' ANDES-F1080 extracts were supplemented. The best laccase activities registered values around 10,575 ± 813 U·L-1.
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Affiliation(s)
- D. Durán-Aranguren
- Product and Processes Design Group, Department of Chemical Engineering, Universidad de Los Andes, Bogotá, Colombia
| | - J.S. Chiriví-Salomón
- Product and Processes Design Group, Department of Chemical Engineering, Universidad de Los Andes, Bogotá, Colombia
- Conservación, Bioprospección y Desarrollo Sostenible, Escuela de Ciencias Agrícolas, Pecuarias y del Medio Ambiente, Universidad Nacional Abierta y a Distancia, Bogotá, Colombia
| | - L. Anaya
- Product and Processes Design Group, Department of Chemical Engineering, Universidad de Los Andes, Bogotá, Colombia
| | - D. Durán-Sequeda
- Product and Processes Design Group, Department of Chemical Engineering, Universidad de Los Andes, Bogotá, Colombia
| | - L.J. Cruz
- Product and Processes Design Group, Department of Chemical Engineering, Universidad de Los Andes, Bogotá, Colombia
| | - J.D. Serrano
- Product and Processes Design Group, Department of Chemical Engineering, Universidad de Los Andes, Bogotá, Colombia
| | - L. Sarmiento
- Product and Processes Design Group, Department of Chemical Engineering, Universidad de Los Andes, Bogotá, Colombia
| | - S. Restrepo
- Laboratory of Mycology and Plant Diseases, Department of Biological Sciences, Universidad de Los Andes, Bogotá, Colombia
| | - T. Sanjuan
- Product and Processes Design Group, Department of Chemical Engineering, Universidad de Los Andes, Bogotá, Colombia
| | - R. Sierra
- Product and Processes Design Group, Department of Chemical Engineering, Universidad de Los Andes, Bogotá, Colombia
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Cruz YWG, Vieira YA, Vilar DS, Torres NH, Aguiar MM, Cavalcanti EB, Américo-Pinheiro JHP, Soriano RN, Bharagava RN, Lima ÁS, Ferreira LFR. Pulp wash: a new source for production of ligninolytic enzymes and biomass and its toxicological evaluation after biological treatment. ENVIRONMENTAL TECHNOLOGY 2020; 41:1837-1847. [PMID: 30457937 DOI: 10.1080/09593330.2018.1551428] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2018] [Accepted: 11/15/2018] [Indexed: 06/09/2023]
Abstract
Pulp wash was used as substrate for the activity of ligninolytic enzymes of the fungus Pleurotus sajor-caju. Activity of laccase (Lac) and manganese peroxidase (MnP) as well as fungal biomass occurred under four conditions: different pulp wash concentrations, pH variation at the optimal pulp wash concentration, different glucose concentrations, and different concentrations of ammonium nitrate. The best enzyme activity and biomass production were obtained with in natura pulp wash and pH corrected to 5.0 (4884 IU/L Lac; 82 IU/L MnP; 25 g/100 mL biomass). However, the addition of glucose and ammonium nitrate to the pulp wash was not necessary for increasing the enzyme activity and biomass production. Efficient removal of pulp wash chemical oxygen demand (99.66%) and biochemical oxygen demand (83.27%) occurred after the mycoremediation with P. sajor-caju in the optimized conditions. Lactuca sativa L. seeds germination bioassay showed a four-fold reduction in the residue toxicity (EC50 28.72%) after the treatment with the fungus. Our findings are consistent with the notion that pulp wash is an excellent substrate for inducing the activity of ligninolytic enzymes and producing fungal biomass, and that the biological treatment is efficient to reduce effluent toxicity.
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Affiliation(s)
- Ytallo W G Cruz
- Post-Graduation Program in Process Engineering, Tiradentes University, Aracaju, Brazil
| | - Yago A Vieira
- Post-Graduation Program in Process Engineering, Tiradentes University, Aracaju, Brazil
| | - Débora S Vilar
- Post-Graduation Program in Process Engineering, Tiradentes University, Aracaju, Brazil
| | | | - Mario M Aguiar
- Division of Molecular Biology, Innsbruck Medical University, Innsbruck, Austria
| | - Eliane B Cavalcanti
- Post-Graduation Program in Process Engineering, Tiradentes University, Aracaju, Brazil
- Institute of Technology and Research, Aracaju, Brazil
| | | | - Renato N Soriano
- Division of Physiology and Biophysics, Department of Basic Life Sciences, Federal University of Juiz de Fora, Governador Valadares, Brazil
| | - Ram N Bharagava
- Laboratory for Bioremediation and Metagenomics Research (LBMR), Department of Microbiology (DM), Babasaheb Bhimrao Ambedkar University (A Central University), Lucknow, India
| | - Álvaro S Lima
- Post-Graduation Program in Process Engineering, Tiradentes University, Aracaju, Brazil
- Institute of Technology and Research, Aracaju, Brazil
| | - Luiz F R Ferreira
- Post-Graduation Program in Process Engineering, Tiradentes University, Aracaju, Brazil
- Institute of Technology and Research, Aracaju, Brazil
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30
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Laccase Immobilized Fe3O4-Graphene Oxide Nanobiocatalyst Improves Stability and Immobilization Efficiency in the Green Preparation of Sulfa Drugs. Catalysts 2020. [DOI: 10.3390/catal10040459] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
This paper, reports on the novel and green synthesis procedure for sulfonamides that involved the immobilization of Trametes Versicolor laccase onto the Fe3O4–graphene nanocomposite via glutaraldehyde (GA) crosslinking (Lac/Fe3O4/GO). Various parameters, mainly, activation time, GA, and laccase concentration were investigated and optimized. The results showed that the optimal contact time was 4 h, GA concentration was 5% while laccase concentration was 5 mg·mL−1, at which a high enzyme activity recovery was achieved (86%). In terms of the stability of immobilized laccase to temperature and storage conditions, the performance of the nanobiocatalyst was found to significantly exceed that of free laccase. The results have indicated that nearly 70% of relative activity for immobilized laccase remained after the incubation period of 2 h at 55 °C, but only 48% of free laccase remained within the same time period. Moreover, the immobilized laccase retained 88% of its initial activity after storage for 20 days. In case of the free laccase, the activity retained within the same time period was 32%. In addition, the nanobiocatalyst possessed better recycling performance as evidenced from the observation that after eight cycles of repeated use, it retained 85% of its original activity.
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31
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Abraham A, Mathew AK, Park H, Choi O, Sindhu R, Parameswaran B, Pandey A, Park JH, Sang BI. Pretreatment strategies for enhanced biogas production from lignocellulosic biomass. BIORESOURCE TECHNOLOGY 2020; 301:122725. [PMID: 31958690 DOI: 10.1016/j.biortech.2019.122725] [Citation(s) in RCA: 143] [Impact Index Per Article: 35.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2019] [Revised: 12/24/2019] [Accepted: 12/30/2019] [Indexed: 05/24/2023]
Abstract
The inclusion of a pretreatment step in anaerobic digestion processes increases the digestibility of lignocellulosic biomass and enhances biogas yields by promoting lignin removal and the destruction of complex biomass structures. The increase in surface area enables the efficient interaction of microbes or enzymes, and a reduction in cellulose crystallinity improves the digestion process under anaerobic conditions. The pretreatment methods may vary based on the type of the lignocellulosic biomass, the nature of the subsequent process and the overall economics of the process. An improved biogas production by 1200% had been reported when ionic liquid used as pretreatment strategy for anaerobic digestion. The different pretreatment techniques used for lignocellulosic biomasses are generally grouped into physical, chemical, physicochemical, and biological methods. These four modes of pretreatment on lignocellulosic biomass and their impact on biogas production process is the major focus of this review article.
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Affiliation(s)
- Amith Abraham
- Department of Chemical Engineering, Hanyang University, 222Wangshimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Anil K Mathew
- Department of Chemical Engineering, Hanyang University, 222Wangshimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Hyojung Park
- Department of Chemical Engineering, Hanyang University, 222Wangshimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Okkyoung Choi
- Department of Chemical Engineering, Hanyang University, 222Wangshimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea
| | - Raveendran Sindhu
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695 019, India
| | - Binod Parameswaran
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695 019, India
| | - Ashok Pandey
- Center for Innovation and Translational Research, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), 31 MG Marg, Lucknow 226 001, India
| | - Jung Han Park
- Science&Technology Policy Coordination Division, Ministry of Science, ICT and Future Planning, 47 Gwanmun-ro, Gwacheon-si, Gyeonggi-do 13809, Republic of Korea
| | - Byoung-In Sang
- Department of Chemical Engineering, Hanyang University, 222Wangshimni-ro, Seongdong-gu, Seoul 04763, Republic of Korea.
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Demkiv OM, Gayda GZ, Broda D, Gonchar MV. Extracellular laccase from Monilinia fructicola: isolation, primary characterization and application. Cell Biol Int 2020; 45:536-548. [PMID: 32052524 DOI: 10.1002/cbin.11316] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 02/02/2020] [Indexed: 01/16/2023]
Abstract
Laccases are enzymes belonging to the family of blue copper oxidases. Due to their broad substrate specificity, they are widely used in many industrial processes and environmental bioremediations for removal of a large number of pollutants. During last decades, laccases attracted scientific interest also as highly promising enzymes to be used in bioanalytics. The aim of this study is to obtain a highly purified laccase from an efficient fungal producer and to demonstrate the applicability of this enzyme for analytics and bioremediation. To select the best microbial source of laccase, a screening of fungal strains was carried out and the fungus Monilinia fructicola was chosen as a producer of an extracellular enzyme. Optimal cultivation conditions for the highest yield of laccase were established; the enzyme was purified by a column chromatography and partially characterized. Molecular mass of the laccase subunit was determined to be near 35 kDa; the optimal pH ranges for the highest activity and stability are 4.5-5.0 and 3.0-5.0, respectively; the optimal temperature for laccase activity is 30°C. Laccase preparation was successfully used as a biocatalyst in the amperometric biosensor for bisphenol A assay and in the bioreactor for bioremediation of some xenobiotics.
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Affiliation(s)
- Olga M Demkiv
- Institute of Cell Biology, National Academy of Sciences of Ukraine, 14/16 Drahomanov Str., 79005, Lviv, Ukraine
| | - Galina Z Gayda
- Institute of Cell Biology, National Academy of Sciences of Ukraine, 14/16 Drahomanov Str., 79005, Lviv, Ukraine
| | - Daniel Broda
- Faculty of Biotechnology, University of Rzeszów, 1 Pigonia Str., 35-310, Rzeszów, Poland
| | - Mykhailo V Gonchar
- Institute of Cell Biology, National Academy of Sciences of Ukraine, 14/16 Drahomanov Str., 79005, Lviv, Ukraine.,Drohobych Ivan Franko State Pedagogical University, 24 Ivan Franko Str., 82100, Drohobych, Ukraine
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Mohit E, Tabarzad M, Faramarzi MA. Biomedical and Pharmaceutical-Related Applications of Laccases. Curr Protein Pept Sci 2020; 21:78-98. [DOI: 10.2174/1389203720666191011105624] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 08/17/2019] [Accepted: 08/21/2019] [Indexed: 12/07/2022]
Abstract
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-mediated
mechanisms for endowing antimicrobial properties were divided into laccase-mediated bio-grafting of
phenolic compounds on lignocellulosic fiber, chitosan and catheters, and laccase-catalyzed iodination.
Accordingly, a special emphasis was placed on laccase-mediated functionalization for creating antimicrobials,
particularly chitosan-based wound dressings. Additionally, oxidative bio-grafting and oxidative
polymerization were described as the two main laccase-catalyzed reactions for imparting antioxidant
properties. Recent laccase-related studies were also summarized regarding the synthesis of antibacterial
and antiproliferative agents and the degradation of pharmaceuticals and personal care products.
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Affiliation(s)
- Elham Mohit
- Department of Pharmaceutical Biotechnology, School of Pharmacy, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Maryam Tabarzad
- Protein Technology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad Ali Faramarzi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran 1417614411, Iran
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Li Z, Jiang S, Xie Y, Fang Z, Xiao Y, Fang W, Zhang X. Mechanism of the salt activation of laccase Lac15. Biochem Biophys Res Commun 2020; 521:997-1002. [DOI: 10.1016/j.bbrc.2019.11.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 11/03/2019] [Indexed: 01/08/2023]
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Saberi S, Zhiani R, Mehrzad J, Motavalizadehkakhky A. Synthesis and characterization of a novel TEMPO@FeNi 3/DFNS–laccase magnetic nanocomposite for the reduction of nitro compounds. RSC Adv 2020; 10:27297-27304. [PMID: 35516956 PMCID: PMC9055517 DOI: 10.1039/d0ra03989f] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Accepted: 07/14/2020] [Indexed: 11/21/2022] Open
Abstract
Water is an essential substance for life on earth and for all living things. Plants and animals need almost pure water to live; if it is contaminated with harmful chemicals and micro organisms, it will be impossible for them to survive. This study has tried to investigate the performance of catalyst to reduce nitro-aromatic combinations in the attendance of NaBH4 solution duo to the hydrogen source. TEMPO@FeNi3/DFNS–laccase MNPs was prepared, and its features were reviewed using SEM, TEM, XRD, TGA, VSM, AFM, and FTIR. Then, its strength as a nanocatalyst for removal of nitro-aromatic combinations was tested in contact time, initial concentration, the effects of pH and nanocatalyst amount was study. The results of this research proved that TEMPO@FeNi3/DFNS–laccase MNPs has a good return in removal of nitro-aromatic combinations, as its easy synthesis and reliable recovery. Water is an essential substance for life on earth and for all living things.![]()
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Affiliation(s)
- Shima Saberi
- Department of Biochemistry
- Faculty of Science
- Islamic Azad University
- Neyshabur
- Iran
| | - Rahele Zhiani
- Department of Chemistry
- Faculty of science
- Islamic Azad University
- Neyshabur
- Iran
| | - Jamshid Mehrzad
- Department of Biochemistry
- Faculty of Science
- Islamic Azad University
- Neyshabur
- Iran
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Haque RU, Paradisi F, Allers T. Haloferax volcanii for biotechnology applications: challenges, current state and perspectives. Appl Microbiol Biotechnol 2019; 104:1371-1382. [PMID: 31863144 PMCID: PMC6985049 DOI: 10.1007/s00253-019-10314-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Revised: 12/05/2019] [Accepted: 12/10/2019] [Indexed: 01/08/2023]
Abstract
Haloferax volcanii is an obligate halophilic archaeon with its origin in the Dead Sea. Simple laboratory culture conditions and a wide range of genetic tools have made it a model organism for studying haloarchaeal cell biology. Halophilic enzymes of potential interest to biotechnology have opened up the application of this organism in biocatalysis, bioremediation, nanobiotechnology, bioplastics and the biofuel industry. Functionally active halophilic proteins can be easily expressed in a halophilic environment, and an extensive genetic toolkit with options for regulated protein overexpression has allowed the purification of biotechnologically important enzymes from different halophiles in H. volcanii. However, corrosion mediated damage caused to stainless-steel bioreactors by high salt concentrations and a tendency to form biofilms when cultured in high volume are some of the challenges of applying H. volcanii in biotechnology. The ability to employ expressed active proteins in immobilized cells within a porous biocompatible matrix offers new avenues for exploiting H. volcanii in biotechnology. This review critically evaluates the various application potentials, challenges and toolkits available for using this extreme halophilic organism in biotechnology.
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Affiliation(s)
- R U Haque
- School of Life Sciences, Queens Medical Centre, University of Nottingham, Nottingham, NG7 2UH, UK.,School of Chemistry, University Park, University of Nottingham, Nottingham, NG7 2RD, UK.,Warwick Integrative Synthetic Biology Centre, School of Life Sciences, Gibbet Hill Campus, University of Warwick, Coventry, CV4 7AL, UK
| | - F Paradisi
- School of Chemistry, University Park, University of Nottingham, Nottingham, NG7 2RD, UK.,Department of Chemistry and Biochemistry, University of Bern, Freiestrasse 3, 3012, Bern, Switzerland
| | - T Allers
- School of Life Sciences, Queens Medical Centre, University of Nottingham, Nottingham, NG7 2UH, UK.
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37
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Stanzione I, Pezzella C, Giardina P, Sannia G, Piscitelli A. Beyond natural laccases: extension of their potential applications by protein engineering. Appl Microbiol Biotechnol 2019; 104:915-924. [DOI: 10.1007/s00253-019-10147-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/06/2019] [Accepted: 09/17/2019] [Indexed: 11/28/2022]
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38
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Nawaz A, Mukhtar H, ul Haq I, Mazhar Z, Mumtaz MW. Laccase: An Environmental Benign Pretreatment Agent for Efficient Bioconversion of Lignocellulosic Residues to Bioethanol. CURR ORG CHEM 2019. [DOI: 10.2174/1385272823666190722163046] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abrupt urbanization and industrialization around the world resulted in elevated environmental pollution and depletion of natural energy resources. An eco-friendly and economical alternative for energy production is the need of an hour. This can be achieved by converting the waste material into energy. One such waste is lignocellulosic agricultural residues, produced in billions of tons every year all around the world, which can be converted into bioethanol. The main challenge in this bioconversion is the recalcitrant nature of lignocellulosic material. The removal of cementing material is lignin and to overcome the potential inhibitors produced during the disintegration of lignin is the challenging task for biotechnologist. This task can be achieved by a number of different methods but laccase is the most effective and eco-friendly method that can be used for effective removal of lignin along with the increase the accessibility of cellulose and bioethanol yield.
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Affiliation(s)
- Ali Nawaz
- Institute of Industrial Biotechnology, GC University, Lahore, Pakistan
| | - Hamid Mukhtar
- Institute of Industrial Biotechnology, GC University, Lahore, Pakistan
| | - Ikram ul Haq
- Institute of Industrial Biotechnology, GC University, Lahore, Pakistan
| | - Zainab Mazhar
- Institute of Industrial Biotechnology, GC University, Lahore, Pakistan
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Xu N, Liu S, Xin F, Zhou J, Jia H, Xu J, Jiang M, Dong W. Biomethane Production From Lignocellulose: Biomass Recalcitrance and Its Impacts on Anaerobic Digestion. Front Bioeng Biotechnol 2019; 7:191. [PMID: 31440504 PMCID: PMC6694284 DOI: 10.3389/fbioe.2019.00191] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2019] [Accepted: 07/24/2019] [Indexed: 11/29/2022] Open
Abstract
Anaerobic digestion using lignocellulosic material as the substrate is a cost-effective strategy for biomethane production, which provides great potential to convert biomass into renewable energy. However, the recalcitrance of native lignocellulosic biomass makes it resistant to microbial hydrolysis, which reduces the bioconversion efficiency of organic matter into biogas. Therefore, it is necessary to critically investigate the correlation between lignocellulose characteristics and bioconversion efficiency. Accordingly, this review comprehensively summarizes the anaerobic digestion process and rate-limiting step, structural and compositional properties of lignocellulosic biomass, recalcitrance and inhibitors of lignocellulose and their major effects on anaerobic digestion for biomethane production. Moreover, various type of pretreatment strategies applied to lignocellulosic biomass was discussed in detail, which would contribution to cell wall degradation and improvement of biomethane yields. In the view of current knowledge, high energy input and cost requirements are the main limitations of these pretreatment methods. In addition to optimization of fermentation process, further studies should focus much more on key structural influence factors of biomass recalcitrance and anaerobic digestion efficiency, which will contribute to improvement of biomethane production from lignocellulose.
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Affiliation(s)
- Ning Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.,Jiangsu Key Laboratory for Biomass-Based Energy and Enzyme Technology, Huaiyin Normal University, Huai'an, China
| | - Shixun Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Fengxue Xin
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Jie Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Honghua Jia
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China
| | - Jiming Xu
- Jiangsu Key Laboratory for Biomass-Based Energy and Enzyme Technology, Huaiyin Normal University, Huai'an, China
| | - Min Jiang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.,Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, China
| | - Weiliang Dong
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, Nanjing, China.,Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing, China
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Co-immobilization of Laccase and TEMPO onto Glycidyloxypropyl Functionalized Fibrous Phosphosilicate Nanoparticles for Fixing CO2 into β-Oxopropylcarbamatesin. Catal Letters 2019. [DOI: 10.1007/s10562-019-02894-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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41
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Biochemical Characteristics of Microbial Enzymes and Their Significance from Industrial Perspectives. Mol Biotechnol 2019; 61:579-601. [DOI: 10.1007/s12033-019-00187-1] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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42
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Sondhi S, Saini K. Response surface based optimization of laccase production from Bacillus sp. MSK-01 using fruit juice waste as an effective substrate. Heliyon 2019; 5:e01718. [PMID: 31193314 PMCID: PMC6525328 DOI: 10.1016/j.heliyon.2019.e01718] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 04/18/2019] [Accepted: 05/09/2019] [Indexed: 11/05/2022] Open
Abstract
Laccases are multicopper oxidases containing four copper atoms per monomer distributed in three redox sites. Because of its tremendous applications in different areas, isolation of new laccases with wide range of industrial implementation. The present study focuses on the optimization of laccase production from Bacillus sp. MSK-01 under solid state fermentation conditions using fruit juice waste as the substrate. MSKLAC was produced extracellularly by the bacteria. This laccase was able to oxidize ABTS and syringaldazine. Various nutritional and environmental factors were utilized for increasing the enzyme yield. Plackett Burman was used to study the influence of input parameters on laccase yield. Tween-80, initial moisture ratio and magnesium sulphate were the major influencing factor affecting laccase yield. Central composite design of RSM was used for the modelling of experiment. Desirability approach was used to optimize laccase yield. Maximum laccase yield of 1645 IUg−1 was obtained when 0.55% of tween -80, 1:2.34 initial moisture ratio and 300μM magnesium sulphate was used. A 470 fold increase in the yield of laccase from unoptimized condition was obtained.
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Affiliation(s)
- Sonica Sondhi
- Department of Biotechnology, Chandigarh College of Technology, CGC Landran, 140307, District-Mohali, Punjab, India
| | - Kiranjot Saini
- Department of Biotechnology, Chandigarh College of Technology, CGC Landran, 140307, District-Mohali, Punjab, India
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Novoa C, Dhoke GV, Mate DM, Martínez R, Haarmann T, Schreiter M, Eidner J, Schwerdtfeger R, Lorenz P, Davari MD, Jakob F, Schwaneberg U. KnowVolution of a Fungal Laccase toward Alkaline pH. Chembiochem 2019; 20:1458-1466. [DOI: 10.1002/cbic.201800807] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Catalina Novoa
- DWI Leibniz Institute for Interactive Materials Forckenbeckstrasse 50 52056 Aachen Germany
| | - Gaurao V. Dhoke
- Institute of BiotechnologyRWTH Aachen University Worringerweg 3 52074 Aachen Germany
| | - Diana M. Mate
- DWI Leibniz Institute for Interactive Materials Forckenbeckstrasse 50 52056 Aachen Germany
- Present address: Center of Molecular Biology “Severo Ochoa”Universidad Autónoma de Madrid Nicolás Cabrera 1 28049 Madrid Spain
| | - Ronny Martínez
- Institute of BiotechnologyRWTH Aachen University Worringerweg 3 52074 Aachen Germany
- Present address: Departamento de Ingeniería en AlimentosInstituto de Investigación Multidisciplinario en Ciencia y TecnologíaUniversidad de La Serena Raúl Bitrán 1305 1720010 La Serena Chile
| | | | | | - Jasmin Eidner
- IAB Enzymes GmbH Feldbergstrasse 78 64293 Darmstadt Germany
| | | | - Patrick Lorenz
- IAB Enzymes GmbH Feldbergstrasse 78 64293 Darmstadt Germany
| | - Mehdi D. Davari
- Institute of BiotechnologyRWTH Aachen University Worringerweg 3 52074 Aachen Germany
| | - Felix Jakob
- DWI Leibniz Institute for Interactive Materials Forckenbeckstrasse 50 52056 Aachen Germany
- Institute of BiotechnologyRWTH Aachen University Worringerweg 3 52074 Aachen Germany
| | - Ulrich Schwaneberg
- DWI Leibniz Institute for Interactive Materials Forckenbeckstrasse 50 52056 Aachen Germany
- Institute of BiotechnologyRWTH Aachen University Worringerweg 3 52074 Aachen Germany
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Rodríguez-Couto S. Fungal Laccase: A Versatile Enzyme for Biotechnological Applications. ACTA ACUST UNITED AC 2019. [DOI: 10.1007/978-3-030-10480-1_13] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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45
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Process optimization, purification and characterization of alkaline stable white laccase from Myrothecium verrucaria ITCC-8447 and its application in delignification of agroresidues. Int J Biol Macromol 2019; 125:1042-1055. [DOI: 10.1016/j.ijbiomac.2018.12.108] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Revised: 12/12/2018] [Accepted: 12/13/2018] [Indexed: 11/20/2022]
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Deng Z, Xia A, Liao Q, Zhu X, Huang Y, Fu Q. Laccase pretreatment of wheat straw: effects of the physicochemical characteristics and the kinetics of enzymatic hydrolysis. BIOTECHNOLOGY FOR BIOFUELS 2019; 12:159. [PMID: 31249622 PMCID: PMC6589886 DOI: 10.1186/s13068-019-1499-3] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 06/14/2019] [Indexed: 05/15/2023]
Abstract
BACKGROUND Wheat straw, the most abundant lignocellulosic biomass in China, is rich in cellulose that can be hydrolyzed and then converted into biofuels, such as bioethanol and biohydrogen. However, the accessibility of cellulose and the enzyme activity are greatly reduced in the presence of lignin. This significantly increases the enzyme cost in the saccharification, which hampers industrial production of lignocellulosic biofuels. In this study, a laccase treatment system mediated by 1-hydroxybenzotriazole was employed to modify and degrade lignin to enhance subsequent enzymatic saccharification of wheat straw. A kinetic model considering enzyme adsorption on lignin was proposed to estimate the saccharification performance. RESULTS Fourier transform infrared spectroscopy (FTIR) analyses showed that the peak intensity of lignin structure characteristics significantly changed after laccase-mediated system (LMS) treatment. 2D-nuclear magnetic resonance (NMR) analyses indicated that the aromatic ether bonds were cleaved and that guaiacyl (G) was oxidized after LMS treatment. X-ray diffraction (XRD) analyses suggested that the crystallinity of lignocellulose increased due to the partial degradation of lignin. As a result, the nonproductive adsorption of the enzyme on lignin was reduced by 28%, while the reducing sugar yield increased by 26%. A semi-empirical kinetic model was used to estimate the reducing sugar yield, the initial hydrolysis rate (K M ) and deactivation rate coefficient (α) of LMS-pretreated wheat straw were 0.157 (h-1) and 0.214 (h-1), respectively. The model showed high accuracy (predicting error < 10%) for describing the behavior of laccase-treated wheat straw hydrolysis when the solid loading is < 5%. CONCLUSIONS The adsorption ability of the enzyme to lignin was reduced after LMS pretreatment. Physicochemical analyses showed that the chemical groups of lignin and lignocellulose were changed, with the crystallinity of the lignocellulose increasing after LMS treatment. A semi-empirical kinetic model was proposed to estimate the reducing sugar yield, which showed high accuracy for predicting the hydrolysis performance of laccase-treated wheat straw.
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Affiliation(s)
- Zhichao Deng
- Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, Chongqing, 400044 China
- Institute of Engineering Thermophysics, Chongqing University, Chongqing, 400044 China
| | - Ao Xia
- Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, Chongqing, 400044 China
- Institute of Engineering Thermophysics, Chongqing University, Chongqing, 400044 China
| | - Qiang Liao
- Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, Chongqing, 400044 China
- Institute of Engineering Thermophysics, Chongqing University, Chongqing, 400044 China
| | - Xianqing Zhu
- Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, Chongqing, 400044 China
- Institute of Engineering Thermophysics, Chongqing University, Chongqing, 400044 China
| | - Yun Huang
- Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, Chongqing, 400044 China
- Institute of Engineering Thermophysics, Chongqing University, Chongqing, 400044 China
| | - Qian Fu
- Key Laboratory of Low-grade Energy Utilization Technologies and Systems, Chongqing University, Ministry of Education, Chongqing, 400044 China
- Institute of Engineering Thermophysics, Chongqing University, Chongqing, 400044 China
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Piccinino D, Capecchi E, Botta L, Bollella P, Antiochia R, Crucianelli M, Saladino R. Layer by layer supported laccase on lignin nanoparticles catalyzes the selective oxidation of alcohols to aldehydes. Catal Sci Technol 2019. [DOI: 10.1039/c9cy00962k] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Lignin nanoparticles support laccase from Trametes versicolor in the selective oxidation of alcohols to aldehydes, in the presence of redox mediators.
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Affiliation(s)
- Davide Piccinino
- Department of Biological and Ecological Sciences
- University of Tuscia
- 01100 Viterbo
- Italy
| | - Eliana Capecchi
- Department of Biological and Ecological Sciences
- University of Tuscia
- 01100 Viterbo
- Italy
| | - Lorenzo Botta
- Department of Biological and Ecological Sciences
- University of Tuscia
- 01100 Viterbo
- Italy
| | - Paolo Bollella
- Department of Chemistry and Drug Technologies
- Sapienza University of Rome
- 00185 Rome
- Italy
| | - Riccarda Antiochia
- Department of Chemistry and Drug Technologies
- Sapienza University of Rome
- 00185 Rome
- Italy
| | - Marcello Crucianelli
- Department of Physical and Chemical Sciences
- University of Aquila
- 67100 Aquila
- Italy
| | - Raffaele Saladino
- Department of Biological and Ecological Sciences
- University of Tuscia
- 01100 Viterbo
- Italy
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Olajuyigbe FM, Adetuyi OY, Fatokun CO. Characterization of free and immobilized laccase from Cyberlindnera fabianii and application in degradation of bisphenol A. Int J Biol Macromol 2018; 125:856-864. [PMID: 30557644 DOI: 10.1016/j.ijbiomac.2018.12.106] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 12/10/2018] [Accepted: 12/12/2018] [Indexed: 01/15/2023]
Abstract
Recovery difficulty and inactivation of laccases are major challenges that hamper their application in biotechnology. In this study, laccase was purified from Cyberlindnera fabianii using ion-exchange and gel filtration chromatography with homogeneity confirmed by sodium dodecyl sulphate polyacrylamide gel electrophoresis. Purified laccase of 52 kDa was immobilized on calcium and copper alginate beads by entrapment method. Free and immobilized enzymes were characterized, and efficiency of bisphenol A (BPA) degradation was determined. pH optima for free and immobilized laccases were 5.0 and 6.0, respectively. Ca and Cu alginate immobilized laccase (Ca-AIL and Cu-AIL) had optimum activity at 60 °C and 50 °C, respectively while free laccase (FL) was at 40 °C. Km and Vmax of FL, Ca-AIL and Cu-AIL were 0.032 mM and 15 mM/min, 0.078 mM and 6.98 mM/min, and 0.091 mM and 5.61 mM/min, respectively. Remarkably, immobilized laccases had higher operational stability than FL over 21 d at 4°C. Reusability of immobilized laccase was effective for 3 cycles with residual activity above 70%. Notably, Ca-AIL and Cu-AIL exhibited 71% and 65.5% BPA degradation efficiency on 14 d. Results reveal good kinetic parameters, improved thermal stability and enhanced reusability of immobilized laccase from C. fabianii with potentials for various industrial applications and bioremediation.
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Affiliation(s)
- Folasade M Olajuyigbe
- Enzyme Biotechnology and Environmental Health Unit, Department of Biochemistry, Federal University of Technology, Akure 340252, Ondo State, Nigeria.
| | - Oluwafijimi Y Adetuyi
- Enzyme Biotechnology and Environmental Health Unit, Department of Biochemistry, Federal University of Technology, Akure 340252, Ondo State, Nigeria
| | - Cornelius O Fatokun
- Enzyme Biotechnology and Environmental Health Unit, Department of Biochemistry, Federal University of Technology, Akure 340252, Ondo State, Nigeria
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Bissaro B, Várnai A, Røhr ÅK, Eijsink VGH. Oxidoreductases and Reactive Oxygen Species in Conversion of Lignocellulosic Biomass. Microbiol Mol Biol Rev 2018; 82:e00029-18. [PMID: 30257993 PMCID: PMC6298611 DOI: 10.1128/mmbr.00029-18] [Citation(s) in RCA: 154] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Biomass constitutes an appealing alternative to fossil resources for the production of materials and energy. The abundance and attractiveness of vegetal biomass come along with challenges pertaining to the intricacy of its structure, evolved during billions of years to face and resist abiotic and biotic attacks. To achieve the daunting goal of plant cell wall decomposition, microorganisms have developed many (enzymatic) strategies, from which we seek inspiration to develop biotechnological processes. A major breakthrough in the field has been the discovery of enzymes today known as lytic polysaccharide monooxygenases (LPMOs), which, by catalyzing the oxidative cleavage of recalcitrant polysaccharides, allow canonical hydrolytic enzymes to depolymerize the biomass more efficiently. Very recently, it has been shown that LPMOs are not classical monooxygenases in that they can also use hydrogen peroxide (H2O2) as an oxidant. This discovery calls for a revision of our understanding of how lignocellulolytic enzymes are connected since H2O2 is produced and used by several of them. The first part of this review is dedicated to the LPMO paradigm, describing knowns, unknowns, and uncertainties. We then present different lignocellulolytic redox systems, enzymatic or not, that depend on fluxes of reactive oxygen species (ROS). Based on an assessment of these putatively interconnected systems, we suggest that fine-tuning of H2O2 levels and proximity between sites of H2O2 production and consumption are important for fungal biomass conversion. In the last part of this review, we discuss how our evolving understanding of redox processes involved in biomass depolymerization may translate into industrial applications.
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Affiliation(s)
- Bastien Bissaro
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Aas, Norway
| | - Anikó Várnai
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Aas, Norway
| | - Åsmund K Røhr
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Aas, Norway
| | - Vincent G H Eijsink
- Faculty of Chemistry, Biotechnology and Food Science, Norwegian University of Life Sciences, Aas, Norway
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50
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Guan ZB, Luo Q, Wang HR, Chen Y, Liao XR. Bacterial laccases: promising biological green tools for industrial applications. Cell Mol Life Sci 2018; 75:3569-3592. [PMID: 30046841 PMCID: PMC11105425 DOI: 10.1007/s00018-018-2883-z] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2018] [Revised: 06/30/2018] [Accepted: 07/19/2018] [Indexed: 11/26/2022]
Abstract
Multicopper oxidases (MCOs) are a pervasive family of enzymes that oxidize a wide range of phenolic and nonphenolic aromatic substrates, concomitantly with the reduction of dioxygen to water. MCOs are usually divided into two functional classes: metalloxidases and laccases. Given their broad substrate specificity and eco-friendliness (molecular oxygen from air as is used as the final electron acceptor and they only release water as byproduct), laccases are regarded as promising biological green tools for an array of applications. Among these laccases, those of bacterial origin have attracted research attention because of their notable advantages, including broad substrate spectrum, wide pH range, high thermostability, and tolerance to alkaline environments. This review aims to summarize the significant research efforts on the properties, mechanisms and structures, laccase-mediator systems, genetic engineering, immobilization, and biotechnological applications of the bacteria-source laccases and laccase-like enzymes, which principally include Bacillus laccases, actinomycetic laccases and some other species of bacterial laccases. In addition, these enzymes may offer tremendous potential for environmental and industrial applications.
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Affiliation(s)
- Zheng-Bing Guan
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China.
| | - Quan Luo
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Hao-Ran Wang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Yu Chen
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Xiang-Ru Liao
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, 214122, People's Republic of China
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