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Gong W, Zeng Y, Li X, Zhao Z, Shen N, Zhou Y, Bian Y, Xiao Y. Molecular Profiling of Rice Straw Degradability Discrepancy in Stropharia rugosoannulata Core Germplasm. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:25379-25390. [PMID: 39480020 DOI: 10.1021/acs.jafc.4c05965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/02/2024]
Abstract
The rice-S. rugosoannulata pattern is a rapidly growing agricultural practice for straw disposal and mushroom production in China. However, different S. rugosoannulata strains show a large variation in rice straw degradability. Here, we constructed a core collection of S. rugosoannulata containing 14 strains with rich genetic diversity. The molecular profiling of the lignocellulose degradability discrepancy of S. rugosoannulata strains was then explored using enzyme activity assays and transcriptome analysis. The results indicated that mycelial growth rate, lignocellulolytic enzyme activities, and rice straw degradability differed widely among the S. rugosoannulata core strains. The genes encoding lignin modifying and degrading auxiliary enzymes, oxidases, glycoside hydrolases, and detoxification proteins were differentially expressed between two representative S. rugosoannulata strains, resulting in differences in their lignocellulolytic enzyme activities and further causing differences in lignocellulose degradability. This study is useful to improve the production efficiency of S. rugosoannulata and promote the recycling of rice straw.
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Affiliation(s)
- Wenbing Gong
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Institute of Applied Mycology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha, Hunan 410205, China
- College of Horticulture, Hunan Agricultural University, Changsha, Hunan 410128, China
| | - Yuyu Zeng
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Institute of Applied Mycology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Xinru Li
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Institute of Applied Mycology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Zhidong Zhao
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Institute of Applied Mycology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Nan Shen
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Institute of Applied Mycology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Yan Zhou
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Institute of Applied Mycology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Yinbing Bian
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Institute of Applied Mycology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
| | - Yang Xiao
- State Key Laboratory of Agricultural Microbiology, Hubei Hongshan Laboratory, Institute of Applied Mycology, Huazhong Agricultural University, Wuhan, Hubei 430070, China
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Chen J, Hong K, Ma L, Hao X. Effect of time series on the degradation of lignin by Trametes gibbosa: Products and pathways. Int J Biol Macromol 2024; 281:136236. [PMID: 39366598 DOI: 10.1016/j.ijbiomac.2024.136236] [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: 12/01/2023] [Revised: 08/27/2024] [Accepted: 09/30/2024] [Indexed: 10/06/2024]
Abstract
Lignin is the third most abundant organic resource in nature. The utilization of white-rot fungi for wood degradation effectively circumvents environmental pollution associated with chemical treatments, facilitating the benign decomposition of lignin. Trametes gibbosa is a typical white-rot fungus with rapid growth and strong wood decomposition ability. The lignin content decreased from 23.62 mg/mL to 17.05 mg/mL, which decreased by 27 % in 30 days. The activity of manganese peroxidase increased steadily by 9.44 times. The activities of laccase and lignin peroxidase had the same trend of change and reached peaks of 49.88 U/L and 10.43 U/L on the 25th day, respectively. The change in H2O2 content in vivo was opposite to its trend. For FTIR and GC-MS analysis, the fungi attacked the side chain structure of lignin phenyl propane polymer and benzene ring to crack into low molecular weight aromatic compounds. The side chains of low molecular weight aromatic compounds are oxidized, and long-chain carboxylic acids are formed. Additionally, the absorption peak in the vibration region of the benzene ring skeleton became complex, and the structure of the benzene rings changed. In the beginning, fungal growth was inhibited. Fungal autophagy was aggravated. The metal cation binding proteins of fungi were active, and the genes related to detoxification metabolism were upregulated. The newly produced compounds are related to xenobiotic metabolism. The degradation peak focused on the redox process, and the biological function was enriched in the regulation of macromolecular metabolism, lignin metabolism, and oxidoreductase activity acting on diphenols and related substances as donors. Notably, genes encoding key degradation enzymes, including lcc3, lcc4, phenol-2-monooxygenase, 3-hydroxybenzoate-6-hydroxylase, oxalate decarboxylase, and acetyl-CoA oxidase were significantly upregulated. On the 30th day, the N-glycan biosynthesis pathway was significantly enriched in glycan biosynthesis and metabolism. Weighted correlation network analysis was performed. A total of 1452 genes were clustered in the coral1 module, which were most related to lignin degradation. The genes were significantly enriched in oxidoreductase activity, peptidase activity, cell response to stimulation, signal transduction, lignin metabolism, and phenylpropane metabolism, while the rest were concentrated in glucose metabolism. In this study, the lignin degradation process and products were revealed by T. gibbosa. The molecular mechanism of lignin degradation in different stages was explored. The selection of an efficient utilization time of lignin will help to increase the degradation rate of lignin. This study provides a theoretical basis for the biofuel and biochemical production of lignin. SYNOPSIS: Trametes gibbosa degrades lignin in a pollution-free way, improving the utilization of carbon resources in an environmentally friendly spontaneous cycle. The products are the new way towards sustainable development and low-carbon technology.
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Affiliation(s)
- Jie Chen
- The Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, College of Forestry, Southwest Forestry University, Kunming 650224, China
| | - Kai Hong
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China
| | - Ling Ma
- College of Forestry, Northeast Forestry University, Harbin 150040, China.
| | - Xin Hao
- The Key Laboratory of Forest Disaster Warning and Control of Yunnan Province, College of Forestry, Southwest Forestry University, Kunming 650224, China.
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Adıgüzel AO, Yabalak E, Cilmeli S, Durgun RT, Kaya NG. Robust peroxidase from Bacillus mojavensis TH309: Immobilization on walnut shell hydrochar and evaluation of its potential in dye decolorization. Int J Biol Macromol 2024; 277:134525. [PMID: 39111491 DOI: 10.1016/j.ijbiomac.2024.134525] [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: 04/07/2024] [Revised: 08/02/2024] [Accepted: 08/04/2024] [Indexed: 09/06/2024]
Abstract
Peroxidases have received considerable attention as a cost-effective and environmentally friendly catalyst for bioremediation. Their rapid activity loss under harsh environmental conditions and inability to be used repetitively limit their exploitation in real-world wastewater treatment. First, a peroxidase was produced extracellularly by Bacillus mojavensis TH309 and purified 8.12-fold with a final yield of 47.10 % using Sephadex G-100 superfine resin. The pure peroxidase (BmPer) possessed a relatively low molecular weight of ∼21 kDa and was active against L-DOPA on acrylamide gel after electrophoresis. BmPer was immobilized by adsorption functionalized walnut shell hydrochar (WsH) with 61.99 ± 1.34 % efficiency and 37.07 ± 4.16 % activity loss. BmPer and its immobilized form (WsH-BmPer) exhibited maximum activity at 50 °C and pH 9. WsH-BmPer exhibited 3.23-, 2.37-, 1.65-, and 2.25-fold longer half-life than BmPer at 50, 60, 70, and 80 °C, respectively. Immobilization significantly enhanced the stability of the enzyme under acidic conditions. BmPer and WsH-BmPer showed maximal activity in the presence of 1 % salt and retained more than 85 % of their activity even after pre-incubation with 2.5 M salt for 60 min at 50 °C. Their catalytic efficiency was significantly stimulated by pre-incubation with Triton X-100 (1 mM), Tween20 (1 mM), and Mg2+ (1 and 10 mM). Immobilization strongly reduced the loss of activity caused by inhibitors including Ba2+, Hg2+, and Cu2+. Moreover, both forms of the enzyme were compatible with solvents. The Michaelis constant (Km) values of BmPer and WsH-BmPer were 0.88 and 2.66 mM for 2,4 DCP, respectively. WsH-BmPer peroxidase maintained about 82 % and 85 % of its activity when stored at 4 °C for 30 days and reused for up to 10 cycles, respectively. Furthermore, it decolorized Cibacron red (CR), Poly R-478 (PR), Remazol Brilliant Blue R (RBBR), and Methyl red (MR) dyes by 60.13 %, 91.34 %, 86.41 %, and 50.51 % within 60 min, respectively.
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Affiliation(s)
- Ali Osman Adıgüzel
- Ondokuz Mayıs University, Science Faculty, Department of Molecular Biology and Genetics, Samsun, Turkey.
| | - Erdal Yabalak
- Mersin University, Department of Nanotechnology and Advanced Materials, Mersin, Turkey; Department of Chemistry and Chemical Processing Technologies, Technical Science Vocational School, Mersin University, 33343 Mersin, Turkey.
| | - Sümeyye Cilmeli
- Ondokuz Mayıs University, Science Faculty, Department of Molecular Biology and Genetics, Samsun, Turkey
| | - Recep Tayyip Durgun
- Ondokuz Mayıs University, Science Faculty, Department of Molecular Biology and Genetics, Samsun, Turkey
| | - Nisa Gül Kaya
- Ondokuz Mayıs University, Science Faculty, Department of Molecular Biology and Genetics, Samsun, Turkey
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Ji T, Liaqat F, Khazi MI, Liaqat N, Nawaz MZ, Zhu D. Lignin biotransformation: Advances in enzymatic valorization and bioproduction strategies. INDUSTRIAL CROPS AND PRODUCTS 2024; 216:118759. [DOI: 10.1016/j.indcrop.2024.118759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
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Sus B, Baltaci MO, Nadaroglu H, Adiguzel A. From agro-food waste to nanoparticles: green synthesis of copper nanoparticles with lignin peroxidase enzyme produced by Anoxybacillus rupiensis using peanut shells. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:52049-52059. [PMID: 39138728 DOI: 10.1007/s11356-024-34489-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Accepted: 07/22/2024] [Indexed: 08/15/2024]
Abstract
This study presents a novel approach for the eco-friendly green synthesis of copper nanoparticles (Cu NPs) using enzymatic mediation which is an environmentally benign alternative to conventional methods, offering control over particle size and shape. Anoxybacillus rupiensis BS1 thermophilic bacterium was isolated from Erzurum's Pasinler hot spring and lignin peroxidase enzyme production conditions (incubation time 96 h, 40 g/L shell amount, pH 8.5, 150 rpm, and 60 °C temperature) were used in the production of peroxidase enzyme using peanut waste which has been optimized. The characterization of the synthesized Cu NPs was performed using various analytical techniques, including UV-vis spectroscopy, Fourier-transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and scanning electron microscopy (SEM), confirming the successful production of stable and well-defined nanoparticles. Furthermore, the biological activities of the synthesized Cu NPs were explored, revealing their potential for antimicrobial applications. The antibacterial efficacy of the Cu NPs against some pathogens such as Escherichia coli, Klebsiella pneumoniae, Staphylococcus aureus, Streptococcus pyogenes, and Bacillus cereus was examined. It was determined that Cu NPs were effective on all pathogens and had the highest effectiveness against the S. pyogenes pathogen (19.0 mm). This study not only presents an innovative and sustainable approach for the synthesis of Cu NPs but also highlights the multifaceted biological activities of these nanoparticles, opening avenues for diverse applications in the fields of medicine, agriculture, and environmental remediation. The utilization of peanut shell wastes as a substrate for enzyme production adds value to agricultural by-products, contributing to the development of a circular and sustainable economy.
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Affiliation(s)
- Bircan Sus
- Department of Molecular Biology and Genetic, Faculty of Science, Ataturk University, 25240, Erzurum, Turkey
| | - Mustafa Ozkan Baltaci
- Department of Molecular Biology and Genetic, Faculty of Science, Ataturk University, 25240, Erzurum, Turkey.
| | - Hayrunnisa Nadaroglu
- Department of Nanoscience and Nanoengineering, Graduate School of Natural and Applied Science, Atatürk University, 25240, Erzurum, Turkey
- Department of Food Technology, Technical Vocational School, Atatürk University, 25240, Erzurum, Turkey
| | - Ahmet Adiguzel
- Department of Molecular Biology and Genetic, Faculty of Science, Ataturk University, 25240, Erzurum, Turkey
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Wang J, Zhang W, Wu C, Hong Y, Shen G, Wang W, Tang H, Mochidzuki K, Cui Z, Khan A, Wang W. Synergistic analysis of lignin degrading bacterial consortium and its application in rice straw fiber film. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:172386. [PMID: 38604360 DOI: 10.1016/j.scitotenv.2024.172386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 04/08/2024] [Accepted: 04/08/2024] [Indexed: 04/13/2024]
Abstract
Fiber film have received widespread attention due to its green friendliness. We can use microorganisms to degrade lignin in straw to obtain cellulose and make fiber films. Herein, a group of high-temperature (50 °C) lignin degrading bacterial consortium (LDH) was enriched and culture conditions for lignin degradation were optimized. Combined with high-throughput sequencing technology, the synergistic effect of LDH-composited bacteria was analyzed. Then LDH was used to treat rice straw for the bio-pulping experiment. The results showed that the lignin of rice straw was degraded 32.4 % by LDH at 50 °C for 10 d, and after the optimization of culture conditions, lignin degradation rate increased by 9.05 % (P < 0.001). The bacteria that compose in LDH can synergistically degrade lignin. Paenibacillus can encode all lignin-degrading enzymes present in the LDH. Preliminary tests of LDH in the pulping industry have been completed. This study is the first to use high temperature lignin degrading bacteria to fabricate fiber film.
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Affiliation(s)
- Jinghong Wang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, PR China; Key Laboratory of Low-Carbon Green Agriculture in Northeast China, Ministry of Agriculture and Rural Affairs, College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China; College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Wei Zhang
- Key Laboratory of Low-Carbon Green Agriculture in Northeast China, Ministry of Agriculture and Rural Affairs, College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Chenying Wu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Yanhua Hong
- Key Laboratory of Low-Carbon Green Agriculture in Northeast China, Ministry of Agriculture and Rural Affairs, College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Guinan Shen
- College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China
| | - Weiwei Wang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Hongzhi Tang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - Kazuhiro Mochidzuki
- A-ESG Science and Technology Research Center, Hiroshima University, Hiroshima 7398527, Japan
| | - Zongjun Cui
- College of Agronomy, China Agricultural University, Beijing 100094, PR China
| | - Aman Khan
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, PR China
| | - Weidong Wang
- Key Laboratory of Saline-alkali Vegetation Ecology Restoration, Ministry of Education, College of Life Sciences, Northeast Forestry University, Harbin 150040, PR China; Key Laboratory of Low-Carbon Green Agriculture in Northeast China, Ministry of Agriculture and Rural Affairs, College of Agronomy, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China; College of Life Science and Biotechnology, Heilongjiang Bayi Agricultural University, Daqing 163319, PR China.
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Maucourt F, Doumèche B, Nazaret S, Fraissinet-Tachet L. Under explored roles of microbial ligninolytic enzymes in aerobic polychlorinated biphenyl transformation. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:19071-19084. [PMID: 38372925 DOI: 10.1007/s11356-024-32291-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Accepted: 01/28/2024] [Indexed: 02/20/2024]
Abstract
Polychlorinated biphenyls (PCBs) are persistent organic pollutants in the environment that are responsible for many adverse health effects. Bioremediation appears to be a healthy and cost-effective alternative for remediating PCB-contaminated environments. While some microbial species have been observed to be capable of transforming PCBs, only two different microbial pathways (rdh and bph pathways) have been described to be involved in PCB transformations. Ligninolytic enzymes have been observed or are under suspicion in some microbial PCB transformations. However, the role of these promising PCB-transforming enzymes, which are produced by fungi and some aerobic bacteria, is still unclear. The present review describes their role by identifying microbial PCB-transforming species and their reported ligninolytic enzymes whether proven or suspected to be involved in PCB transformations. There are several lines of evidence that ligninolytic enzymes are responsible for PCB transformations such as (1) the ability of purified laccases from Myceliophthora thermophila, Pycnoporus cinnabarinus, Trametes versicolor, Cladosporium sp, and Coprinus cumatus to transform hydroxy-PCBs; (2) the increased production of laccases and peroxidases by many fungi in the presence of PCBs; and (3) the enhanced PCB transformation by Pseudomonas stutzeri and Sinorhizobium meliloti NM after the addition of ligninolytic enzyme enhancers. However, if the involvement of ligninolytic enzymes in PCB transformation is clearly demonstrated in some fungal species, it does not seem to be implicated in all microbial species suggesting other still unknown metabolic pathways involved in PCB transformation and different from the bph and rdh pathways. Therefore, PCB transformation may involve several metabolic pathways, some involving ligninolytic enzymes, bph or rdh genes, and some still unknown, depending on the microbial species. In addition, current knowledge does not fully clarify the role of ligninolytic enzymes in PCB oxidation and dechlorination. Therefore, further studies focusing on purified ligninolytic enzymes are needed to clearly elucidate their role in PCB transformation.
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Affiliation(s)
- Flavien Maucourt
- Université Claude Bernard Lyon 1, CNRS, INRAE, VetAgro Sup, UMR Ecologie Microbienne, F-7 69622, Villeurbanne, France
- ENVISOL, 2-4 rue Hector Berlioz, F-38110, La Tour du Pin, France
| | - Bastien Doumèche
- Université de Lyon, Université Claude Bernard Lyon 1, CNRS 5246 ICBMS, F-7 69622, Villeurbanne, France
| | - Sylvie Nazaret
- Université Claude Bernard Lyon 1, CNRS, INRAE, VetAgro Sup, UMR Ecologie Microbienne, F-7 69622, Villeurbanne, France
| | - Laurence Fraissinet-Tachet
- Université Claude Bernard Lyon 1, CNRS, INRAE, VetAgro Sup, UMR Ecologie Microbienne, F-7 69622, Villeurbanne, France.
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Sharma N, Agarwal A, Bijoy A, Pandit S, Sharma RK. Lignocellulolytic extremozymes and their biotechnological applications. Extremophiles 2023; 28:2. [PMID: 37950773 DOI: 10.1007/s00792-023-01314-2] [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: 01/02/2023] [Accepted: 09/26/2023] [Indexed: 11/13/2023]
Abstract
Lignocellulolytic enzymes are used in different industrial and environmental processes. The rigorous operating circumstances of these industries, however, might prevent these enzymes from performing as intended. On the other side, extremozymes are enzymes produced by extremophiles that can function in extremely acidic or basic; hot or cold; under high or low salinity conditions. These severe conditions might denature the normal enzymes that are produced by mesophilic microorganisms. The increased stability of these enzymes has been contributed to a number of conformational modifications in their structures. These modifications may result from a few amino acid substitutions, an improved hydrophobic core, the existence of extra ion pairs and salt bridges, an increase in compactness, or an increase in positively charged amino acids. These enzymes are the best option for industrial and bioremediation activities that must be carried out under difficult conditions due to their improved stability. The review, therefore, discusses lignocellulolytic extremozymes, their structure and mechanisms along with industrial and biotechnological applications.
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Affiliation(s)
- Nikita Sharma
- Department of Biosciences, Manipal University Jaipur, Jaipur, 303007, Rajasthan, India
| | - Aditi Agarwal
- Department of Biosciences, Manipal University Jaipur, Jaipur, 303007, Rajasthan, India
| | - Ananya Bijoy
- Department of Biosciences, Manipal University Jaipur, Jaipur, 303007, Rajasthan, India
| | - Sunidhi Pandit
- Department of Biosciences, Manipal University Jaipur, Jaipur, 303007, Rajasthan, India
| | - Rakesh Kumar Sharma
- Department of Life Sciences, Chhatrapati Shahu Ji Maharaj University, Kanpur, India.
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De Filippis F, Bonelli M, Bruno D, Sequino G, Montali A, Reguzzoni M, Pasolli E, Savy D, Cangemi S, Cozzolino V, Tettamanti G, Ercolini D, Casartelli M, Caccia S. Plastics shape the black soldier fly larvae gut microbiome and select for biodegrading functions. MICROBIOME 2023; 11:205. [PMID: 37705113 PMCID: PMC10500907 DOI: 10.1186/s40168-023-01649-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 07/16/2023] [Indexed: 09/15/2023]
Abstract
BACKGROUND In the last few years, considerable attention has been focused on the plastic-degrading capability of insects and their gut microbiota in order to develop novel, effective, and green strategies for plastic waste management. Although many analyses based on 16S rRNA gene sequencing are available, an in-depth analysis of the insect gut microbiome to identify genes with plastic-degrading potential is still lacking. RESULTS In the present work, we aim to fill this gap using Black Soldier Fly (BSF) as insect model. BSF larvae have proven capability to efficiently bioconvert a wide variety of organic wastes but, surprisingly, have never been considered for plastic degradation. BSF larvae were reared on two widely used plastic polymers and shotgun metagenomics was exploited to evaluate if and how plastic-containing diets affect composition and functions of the gut microbial community. The high-definition picture of the BSF gut microbiome gave access for the first time to the genomes of culturable and unculturable microorganisms in the gut of insects reared on plastics and revealed that (i) plastics significantly shaped bacterial composition at species and strain level, and (ii) functions that trigger the degradation of the polymer chains, i.e., DyP-type peroxidases, multicopper oxidases, and alkane monooxygenases, were highly enriched in the metagenomes upon exposure to plastics, consistently with the evidences obtained by scanning electron microscopy and 1H nuclear magnetic resonance analyses on plastics. CONCLUSIONS In addition to highlighting that the astonishing plasticity of the microbiota composition of BSF larvae is associated with functional shifts in the insect microbiome, the present work sets the stage for exploiting BSF larvae as "bioincubators" to isolate microbial strains and enzymes for the development of innovative plastic biodegradation strategies. However, most importantly, the larvae constitute a source of enzymes to be evolved and valorized by pioneering synthetic biology approaches. Video Abstract.
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Affiliation(s)
- Francesca De Filippis
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
- Task Force on Microbiome Studies, University of Naples Federico II, Naples, Italy
| | - Marco Bonelli
- Department of Biosciences, University of Milan, Milan, Italy
| | - Daniele Bruno
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Giuseppina Sequino
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
| | - Aurora Montali
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
| | - Marcella Reguzzoni
- Department of Medicine and Surgery, University of Insubria, Varese, Italy
| | - Edoardo Pasolli
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
- Task Force on Microbiome Studies, University of Naples Federico II, Naples, Italy
| | - Davide Savy
- Interdepartmental Research Centre of Nuclear Magnetic Resonance for the Environment, Agri-Food and New Materials (CERMANU), University of Naples Federico II, Portici, Italy
| | - Silvana Cangemi
- Interdepartmental Research Centre of Nuclear Magnetic Resonance for the Environment, Agri-Food and New Materials (CERMANU), University of Naples Federico II, Portici, Italy
| | - Vincenza Cozzolino
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy
- Interdepartmental Research Centre of Nuclear Magnetic Resonance for the Environment, Agri-Food and New Materials (CERMANU), University of Naples Federico II, Portici, Italy
| | - Gianluca Tettamanti
- Department of Biotechnology and Life Sciences, University of Insubria, Varese, Italy
- Interuniversity Center for Studies on Bioinspired Agro-Environmental Technology (BAT Center), University of Naples Federico II, Portici, Italy
| | - Danilo Ercolini
- Department of Agricultural Sciences, University of Naples Federico II, Portici, Italy.
- Task Force on Microbiome Studies, University of Naples Federico II, Naples, Italy.
| | - Morena Casartelli
- Department of Biosciences, University of Milan, Milan, Italy.
- Interuniversity Center for Studies on Bioinspired Agro-Environmental Technology (BAT Center), University of Naples Federico II, Portici, Italy.
| | - Silvia Caccia
- Task Force on Microbiome Studies, University of Naples Federico II, Naples, Italy.
- Department of Biosciences, University of Milan, Milan, Italy.
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Kumar N, He J, Rusling JF. Electrochemical transformations catalyzed by cytochrome P450s and peroxidases. Chem Soc Rev 2023; 52:5135-5171. [PMID: 37458261 DOI: 10.1039/d3cs00461a] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/01/2023]
Abstract
Cytochrome P450s (Cyt P450s) and peroxidases are enzymes featuring iron heme cofactors that have wide applicability as biocatalysts in chemical syntheses. Cyt P450s are a family of monooxygenases that oxidize fatty acids, steroids, and xenobiotics, synthesize hormones, and convert drugs and other chemicals to metabolites. Peroxidases are involved in breaking down hydrogen peroxide and can oxidize organic compounds during this process. Both heme-containing enzymes utilize active FeIVO intermediates to oxidize reactants. By incorporating these enzymes in stable thin films on electrodes, Cyt P450s and peroxidases can accept electrons from an electrode, albeit by different mechanisms, and catalyze organic transformations in a feasible and cost-effective way. This is an advantageous approach, often called bioelectrocatalysis, compared to their biological pathways in solution that require expensive biochemical reductants such as NADPH or additional enzymes to recycle NADPH for Cyt P450s. Bioelectrocatalysis also serves as an ex situ platform to investigate metabolism of drugs and bio-relevant chemicals. In this paper we review biocatalytic electrochemical reactions using Cyt P450s including C-H activation, S-oxidation, epoxidation, N-hydroxylation, and oxidative N-, and O-dealkylation; as well as reactions catalyzed by peroxidases including synthetically important oxidations of organic compounds. Design aspects of these bioelectrocatalytic reactions are presented and discussed, including enzyme film formation on electrodes, temperature, pH, solvents, and activation of the enzymes. Finally, we discuss challenges and future perspective of these two important bioelectrocatalytic systems.
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Affiliation(s)
- Neeraj Kumar
- Department of Chemistry, University of Connecticut, Storrs, CT 06269-3136, USA.
| | - Jie He
- Department of Chemistry, University of Connecticut, Storrs, CT 06269-3136, USA.
- Institute of Materials Science, University of Connecticut, Storrs, CT 06269-3136, USA
| | - James F Rusling
- Department of Chemistry, University of Connecticut, Storrs, CT 06269-3136, USA.
- Institute of Materials Science, University of Connecticut, Storrs, CT 06269-3136, USA
- Department of Surgery and Neag Cancer Center, Uconn Health, Farmington, CT 06030, USA
- School of Chemistry, National University of Ireland at Galway, Galway, Ireland
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11
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Singh AK, Iqbal HMN, Cardullo N, Muccilli V, Fern'andez-Lucas J, Schmidt JE, Jesionowski T, Bilal M. Structural insights, biocatalytic characteristics, and application prospects of lignin-modifying enzymes for sustainable biotechnology-A review. Int J Biol Macromol 2023:124968. [PMID: 37217044 DOI: 10.1016/j.ijbiomac.2023.124968] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2023] [Revised: 04/22/2023] [Accepted: 05/17/2023] [Indexed: 05/24/2023]
Abstract
Lignin modifying enzymes (LMEs) have gained widespread recognition in depolymerization of lignin polymers by oxidative cleavage. LMEs are a robust class of biocatalysts that include lignin peroxidase (LiP), manganese peroxidase (MnP), versatile peroxidase (VP), laccase (LAC), and dye-decolorizing peroxidase (DyP). Members of the LMEs family act on phenolic, non-phenolic substrates and have been widely researched for valorization of lignin, oxidative cleavage of xenobiotics and phenolics. LMEs implementation in the biotechnological and industrial sectors has sparked significant attention, although its potential future applications remain underexploited. To understand the mechanism of LMEs in sustainable pollution mitigation, several studies have been undertaken to assess the feasibility of LMEs in correlating to diverse pollutants for binding and intermolecular interactions at the molecular level. However, further investigation is required to fully comprehend the underlying mechanism. In this review we presented the key structural and functional features of LMEs, including the computational aspects, as well as the advanced applications in biotechnology and industrial research. Furthermore, concluding remarks and a look ahead, the use of LMEs coupled with computational frameworks, built upon artificial intelligence (AI) and machine learning (ML), has been emphasized as a recent milestone in environmental research.
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Affiliation(s)
- Anil Kumar Singh
- Environmental Microbiology Laboratory, Environmental Toxicology Group CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico
| | - Nunzio Cardullo
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, V.le A. Doria 6, 95125 Catania, Italy
| | - Vera Muccilli
- Dipartimento di Scienze Chimiche, Università degli Studi di Catania, V.le A. Doria 6, 95125 Catania, Italy
| | - Jesús Fern'andez-Lucas
- Applied Biotechnology Group, Universidad Europea de Madrid, Urbanizaci'on El Bosque, 28670 Villaviciosa de Od'on, Spain; Grupo de Investigaci'on en Ciencias Naturales y Exactas, GICNEX, Universidad de la Costa, CUC, Calle 58 # 55-66, 080002 Barranquilla, Colombia
| | - Jens Ejbye Schmidt
- Department of Chemical Engineering, Biotechnology and Environmental Technology, University of Southern Denmark, Odense, Denmark
| | - Teofil Jesionowski
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, PL-60965 Poznan, Poland
| | - Muhammad Bilal
- Institute of Chemical Technology and Engineering, Faculty of Chemical Technology, Poznan University of Technology, Berdychowo 4, PL-60965 Poznan, Poland.
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12
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Chen J, Hao X, Chi Y, Ma L. Metabolic regulation mechanism of Trametes gibbosa CB_1 on lignin. Int J Biol Macromol 2023; 240:124189. [PMID: 36990410 DOI: 10.1016/j.ijbiomac.2023.124189] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2023] [Revised: 03/07/2023] [Accepted: 03/22/2023] [Indexed: 03/29/2023]
Abstract
White rot fungi can degrade lignin and play a significant role in the recycling of carbon resources for environmental protection. Trametes gibbosa is the main white rot fungus in Northeast China. The main acids produced by T. gibbosa degradation, include long-chain fatty acids, lactic acid, succinic acid, and some small molecular compounds for example benzaldehyde. A variety of proteins respond to lignin stress and play an important role in xenobiotics metabolism, metal ion transport, and redox. Coordinated regulation and detoxification activation of H2O2 produced in oxidative stress by peroxidase coenzyme system and Fenton reaction. The Dioxygenase cleavage pathway and β-ketoadipic acid pathway are the main oxidation pathways of lignin degradation, which mediate the entry of "COA" into the TCA cycle. In the joint action of hydrolase and coenzyme, cellulose, hemicellulose, and other polysaccharides are degraded and finally converted to glucose to participate in energy metabolism. The expression of the laccase (Lcc_1) protein was verified by E. coli. Also, the Lcc_1 overexpression mutant was established. The morphology of mycelium was dense and the lignin degradation rate was improved. We completed the first non-directional mutation of in T. gibbosa. It also improved the mechanism of T. gibbosa in response to lignin stress.
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13
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Biko OD, Viljoen-Bloom M, van Zyl WH. Medium optimization for enhanced production of recombinant lignin peroxidase in Pichia pastoris. Biotechnol Lett 2023; 45:105-113. [PMID: 36400875 DOI: 10.1007/s10529-022-03321-3] [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: 09/16/2022] [Revised: 10/24/2022] [Accepted: 10/28/2022] [Indexed: 11/21/2022]
Abstract
OBJECTIVES Different cultivation conditions and parameters were evaluated to improve the production and secretion of a recombinant Phanerochaete chrysosporium lipH8 gene in Komagataella phaffii (Pichia pastoris). RESULTS The recombinant lipH8 gene with its native secretion signal was successfully cloned and expressed in Komagataella phaffii (Pichia pastoris) under the control of the alcohol oxidase 1 promoter (PAOX1). The results revealed that co-feeding with sorbitol and methanol increased rLiP secretion by 5.9-fold compared to the control conditions. The addition of 1 mM FeSO4 increased LiP activity a further 6.0-fold during the induction phase. Moreover, the combination of several optimal conditions and parameters yielded an extracellular rLiP activity of 20.05 U l-1, which is more than ten-fold higher relative to standard growth conditions (BMM10 medium, pH 6 and 30 °C). CONCLUSION Extracellular activity of a recombinant LiP expressed in P. pastoris increased more than ten-fold when co-feeding sorbitol and methanol as carbon sources, together with urea as nitrogen source, FeSO4 supplementation, lower pH and lower cultivation temperature.
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Affiliation(s)
- Odwa D Biko
- Department of Microbiology, Stellenbosch University, Private Bag X1, Stellenbosch, 7602, South Africa
| | - Marinda Viljoen-Bloom
- Department of Microbiology, Stellenbosch University, Private Bag X1, Stellenbosch, 7602, South Africa
| | - Willem H van Zyl
- Department of Microbiology, Stellenbosch University, Private Bag X1, Stellenbosch, 7602, South Africa.
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14
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Wan Z, Zhang H, Guo Y, Li H. Advances in Catalytic Depolymerization of Lignin. ChemistrySelect 2022. [DOI: 10.1002/slct.202202582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Zhouyuanye Wan
- Zhouyuanye Wan Prof. Dr. Yanzhu Guo Prof. Dr. Haiming Li Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery School of Light Industry and Chemical Engineering Dalian Polytechnic University No.1 Qinggongyuan, Ganjingzi District Dalian 116034 China
| | - Hongjie Zhang
- China National Pulp and Paper Research Institute Co. Ltd. Beijing 100102 China
| | - Yanzhu Guo
- Zhouyuanye Wan Prof. Dr. Yanzhu Guo Prof. Dr. Haiming Li Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery School of Light Industry and Chemical Engineering Dalian Polytechnic University No.1 Qinggongyuan, Ganjingzi District Dalian 116034 China
| | - Haiming Li
- Zhouyuanye Wan Prof. Dr. Yanzhu Guo Prof. Dr. Haiming Li Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery School of Light Industry and Chemical Engineering Dalian Polytechnic University No.1 Qinggongyuan, Ganjingzi District Dalian 116034 China
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15
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Heng S, Sutheeworapong S, Champreda V, Uke A, Kosugi A, Pason P, Waeonukul R, Ceballos RM, Ratanakhanokchai K, Tachaapaikoon C. Genomics and cellulolytic, hemicellulolytic, and amylolytic potential of Iocasia fonsfrigidae strain SP3-1 for polysaccharide degradation. PeerJ 2022; 10:e14211. [PMID: 36281362 PMCID: PMC9587714 DOI: 10.7717/peerj.14211] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 09/19/2022] [Indexed: 01/24/2023] Open
Abstract
Background Cellulolytic, hemicellulolytic, and amylolytic (CHA) enzyme-producing halophiles are understudied. The recently defined taxon Iocasia fonsfrigidae consists of one well-described anaerobic bacterial strain: NS-1T. Prior to characterization of strain NS-1T, an isolate designated Halocella sp. SP3-1 was isolated and its genome was published. Based on physiological and genetic comparisons, it was suggested that Halocella sp. SP3-1 may be another isolate of I. fronsfrigidae. Despite being geographic variants of the same species, data indicate that strain SP3-1 exhibits genetic, genomic, and physiological characteristics that distinguish it from strain NS-1T. In this study, we examine the halophilic and alkaliphilic nature of strain SP3-1 and the genetic substrates underlying phenotypic differences between strains SP3-1 and NS-1T with focus on sugar metabolism and CHA enzyme expression. Methods Standard methods in anaerobic cell culture were used to grow strains SP3-1 as well as other comparator species. Morphological characterization was done via electron microscopy and Schaeffer-Fulton staining. Data for sequence comparisons (e.g., 16S rRNA) were retrieved via BLAST and EzBioCloud. Alignments and phylogenetic trees were generated via CLUTAL_X and neighbor joining functions in MEGA (version 11). Genomes were assembled/annotated via the Prokka annotation pipeline. Clusters of Orthologous Groups (COGs) were defined by eegNOG 4.5. DNA-DNA hybridization calculations were performed by the ANI Calculator web service. Results Cells of strain SP3-1 are rods. SP3-1 cells grow at NaCl concentrations of 5-30% (w/v). Optimal growth occurs at 37 °C, pH 8.0, and 20% NaCl (w/v). Although phylogenetic analysis based on 16S rRNA gene indicates that strain SP3-1 belongs to the genus Iocasia with 99.58% average nucleotide sequence identity to Iocasia fonsfrigida NS-1T, strain SP3-1 is uniquely an extreme haloalkaliphile. Moreover, strain SP3-1 ferments D-glucose to acetate, butyrate, carbon dioxide, hydrogen, ethanol, and butanol and will grow on L-arabinose, D-fructose, D-galactose, D-glucose, D-mannose, D-raffinose, D-xylose, cellobiose, lactose, maltose, sucrose, starch, xylan and phosphoric acid swollen cellulose (PASC). D-rhamnose, alginate, and lignin do not serve as suitable culture substrates for strain SP3-1. Thus, the carbon utilization profile of strain SP3-1 differs from that of I. fronsfrigidae strain NS-1T. Differences between these two strains are also noted in their lipid composition. Genomic data reveal key differences between the genetic profiles of strain SP3-1 and NS-1T that likely account for differences in morphology, sugar metabolism, and CHA-enzyme potential. Important to this study, I. fonsfrigidae SP3-1 produces and extracellularly secretes CHA enzymes at different levels and composition than type strain NS-1T. The high salt tolerance and pH range of SP3-1 makes it an ideal candidate for salt and pH tolerant enzyme discovery.
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Affiliation(s)
- Sobroney Heng
- School of Bioresources and Technology, King Mongkut’s Institute of Technology Thonburi, Bangkok, Thailand
| | - Sawannee Sutheeworapong
- Pilot Plant Development and Training Institute, King Mongkut’s Institute of Technology Thonburi, Bangkok, Thailand
| | - Verawat Champreda
- National Center for Genetic Engineering and Biotechnology, Thailand Science Park, Klong Luang, Pathumthani, Thailand
| | - Ayaka Uke
- Biological Resources and Post-harvest Division, Japan International Research Center for Agricultural Sciences, Ibaraki, Japan
| | - Akihiko Kosugi
- Biological Resources and Post-harvest Division, Japan International Research Center for Agricultural Sciences, Ibaraki, Japan
| | - Patthra Pason
- School of Bioresources and Technology, King Mongkut’s Institute of Technology Thonburi, Bangkok, Thailand,Excellent Center of Enzyme Technology and Microbial Utilization, Pilot Plant Development and Training Institute, King Mongkut’s Institute of Technology Thonburi, Bangkok, Thailand
| | - Rattiya Waeonukul
- School of Bioresources and Technology, King Mongkut’s Institute of Technology Thonburi, Bangkok, Thailand,Excellent Center of Enzyme Technology and Microbial Utilization, Pilot Plant Development and Training Institute, King Mongkut’s Institute of Technology Thonburi, Bangkok, Thailand
| | - Ruben Michael Ceballos
- Department of Biological Sciences, University of Arkansas, Fayetteville, AR, United States of America,Arkansas Center for Space & Planetary Sciences, University of Arkansas, Fayetteville, AR, United States of America
| | - Khanok Ratanakhanokchai
- School of Bioresources and Technology, King Mongkut’s Institute of Technology Thonburi, Bangkok, Thailand,Excellent Center of Enzyme Technology and Microbial Utilization, Pilot Plant Development and Training Institute, King Mongkut’s Institute of Technology Thonburi, Bangkok, Thailand
| | - Chakrit Tachaapaikoon
- School of Bioresources and Technology, King Mongkut’s Institute of Technology Thonburi, Bangkok, Thailand,Excellent Center of Enzyme Technology and Microbial Utilization, Pilot Plant Development and Training Institute, King Mongkut’s Institute of Technology Thonburi, Bangkok, Thailand
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16
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Valorization of Lignin and Its Derivatives Using Yeast. Processes (Basel) 2022. [DOI: 10.3390/pr10102004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
As the third most plentiful biopolymer after other lignocellulosic derivates such as cellulose and hemicellulose, lignin carries abundant potential as a substitute for petroleum-based products. However, the efficient, practical, value-added product valorization of lignin remains quite challenging. Although several studies have reviewed the valorization of lignin by microorganisms, this present review covers recent studies on the valorization of lignin by employing yeast to obtain products such as single-cell oils (SCOs), enzymes, and other chemical compounds. The use of yeasts has been found to be suitable for the biological conversion of lignin and might provide new insights for future research to develop a yeast strain for lignin to produce other valuable chemical compounds.
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17
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Zhang S, Dong Z, Shi J, Yang C, Fang Y, Chen G, Chen H, Tian C. Enzymatic hydrolysis of corn stover lignin by laccase, lignin peroxidase, and manganese peroxidase. BIORESOURCE TECHNOLOGY 2022; 361:127699. [PMID: 35905874 DOI: 10.1016/j.biortech.2022.127699] [Citation(s) in RCA: 29] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 07/21/2022] [Accepted: 07/22/2022] [Indexed: 06/15/2023]
Abstract
Lignin of high purity and structural integrity was isolated from the enzymatic residue of corn stover. Degradation of the lignin by laccase, lignin peroxidase, and manganese peroxidase was investigated. Structural changes in the lignin after degradation were characterized by scanning electron microscopy, nitrogen adsorption and Fourier transform infrared spectroscopy, and the enzymatic products were systematically analyzed by gas chromatography mass spectrometry. The highest percentage of lignin degradation was obtained with a mixture of three enzymes (25.79%): laccase (Lac), the starting enzyme of the mixed enzyme reaction, worked with lignin peroxidase (LiP), and manganese peroxidase (MnP) to further degrade lignin. This degradation destroyed the macromolecular structure of lignin, broke its key chemical bonds, and opened benzene rings, thus producing more acidic compounds. This study elucidated the concept of degrading lignin from corn stover using the Lac, LiP and MnP enzymes synergistically, thus providing a theoretical basis for the biodegradation of lignin.
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Affiliation(s)
- Sitong Zhang
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; Key Laboratory of Straw Comprehensive Utilization and Black Soil Conservation, Ministry of Education, Changchun 130012, China
| | - Zijian Dong
- College of Life Science, Jilin Agricultural University, Changchun 130118, China
| | - Jia Shi
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; Key Laboratory of Straw Comprehensive Utilization and Black Soil Conservation, Ministry of Education, Changchun 130012, China
| | - Chengrui Yang
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; Key Laboratory of Straw Comprehensive Utilization and Black Soil Conservation, Ministry of Education, Changchun 130012, China
| | - Yi Fang
- Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China
| | - Guang Chen
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; Key Laboratory of Straw Comprehensive Utilization and Black Soil Conservation, Ministry of Education, Changchun 130012, China
| | - Huan Chen
- College of Life Science, Jilin Agricultural University, Changchun 130118, China; Key Laboratory of Straw Comprehensive Utilization and Black Soil Conservation, Ministry of Education, Changchun 130012, China
| | - Chunjie Tian
- Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China.
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18
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Agrawal N, Kumar V, Shahi SK. Biodegradation and detoxification of phenanthrene in in vitro and in vivo conditions by a newly isolated ligninolytic fungus Coriolopsis byrsina strain APC5 and characterization of their metabolites for environmental safety. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:61767-61782. [PMID: 34231140 DOI: 10.1007/s11356-021-15271-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Accepted: 06/28/2021] [Indexed: 06/13/2023]
Abstract
Polycyclic aromatic hydrocarbons (PAHs) are recalcitrant organic pollutants generated from agricultural, industrial, and municipal sources, and their strong carcinogenic and teratogenic properties pose a harmful threat to human beings. The present study deals with the bioremediation of phenanthrene by a ligninolytic fungus, Coriolopsis byrsina (Mont.) Ryvarden strain APC5 (GenBank; KY418163.1), isolated from the fruiting body of decayed wood surface. During the experiment, Coriolopsis byrsina strain APC5 was found as a promising organism for the degradation and detoxification of phenanthrene (PHE) in in vitro and in vivo conditions. Further, HPLC analysis showed that the C. byrsina strain degraded 99.90% of 20 mg/L PHE in in vitro condition, whereas 77.48% degradation of 50 mg/L PHE was reported in in vivo condition. The maximum degradation of PHE was noted 25 °C temperature under shaking flask conditions at pH 6.0. Further, GC-MS analysis of fungal treated samples showed detection of 9,10-Dihydroxy phenanthrene, 2,2-Diphenic acid, phthalic acid, 4-heptyloxy phenol, benzene octyl, and acetic acid anhydride as the metabolic products of degraded PHE. Furthermore, the phytotoxicity evaluation of degraded PHE was observed through the seed germination method using Vigna radiata and Cicer arietinum seeds. The phytotoxicity results showed that the seed germination index and vegetative growth parameters of tested plants were increased in the degraded PHE soil. As results, C. byrsina strain APC5 was found to be a potential and promising organism to degrade and detoxify PHE without showing any adverse effect of their metabolites.
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Affiliation(s)
- Nikki Agrawal
- Bio-Resource Tech Laboratory, Department of Botany, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh, 495009, India
| | - Vineet Kumar
- Bio-Resource Tech Laboratory, Department of Botany, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh, 495009, India
| | - Sushil Kumar Shahi
- Bio-Resource Tech Laboratory, Department of Botany, Guru Ghasidas Vishwavidyalaya, Bilaspur, Chhattisgarh, 495009, India.
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19
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Sriwong C, Sukyai P. Simulated elephant colon for cellulose extraction from sugarcane bagasse: An effective pretreatment to reduce chemical use. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 835:155281. [PMID: 35439514 DOI: 10.1016/j.scitotenv.2022.155281] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 04/09/2022] [Accepted: 04/10/2022] [Indexed: 06/14/2023]
Abstract
Sugarcane bagasse (SCB) is an abundant by-product from sugar production and promising biomass for cellulose extraction. Simulated elephant colon pretreatment (SEP) to reduce chemical use in cellulose extraction from SCB was investigated using elephant dung as fermentation inoculum. The 16S rRNA gene sequences showed microorganisms in elephant dung that corresponded to metabolites during pretreatment. Organic acid accumulation in the fermentation broth was confirmed by the presence of lactic, acetic, propionic and butyric acids. Lignin peroxidase, manganese peroxidase and xylanase detected during the pretreatment enhanced lignin removal. The SEP fiber showed increased cellulose content, while lignin content decreased with reduced bleaching time from 7 to 5 h and high whiteness and crystallinity indices. Lignin removal was also confirmed by Fourier transform infrared spectroscopy. Scanning electron microscopy revealed increasing internal surface area through opening up the fiber structure. SEP offered an efficient and promising approach for cellulose fiber extraction with reduced use of chemicals for the bleaching process.
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Affiliation(s)
- Chotiwit Sriwong
- Cellulose for Future Materials and Technologies Special Research Unit, Department of Biotechnology, Faculty of Agro-Industry, Kasetsart University, 50 Ngamwongwan Road Chatuchak, Bangkok 10900, Thailand
| | - Prakit Sukyai
- Cellulose for Future Materials and Technologies Special Research Unit, Department of Biotechnology, Faculty of Agro-Industry, Kasetsart University, 50 Ngamwongwan Road Chatuchak, Bangkok 10900, Thailand; Center for Advanced Studies for Agriculture and Food, Kasetsart University Institute for Advanced Studies, Kasetsart University, Bangkok 10900, Thailand.
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20
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Fermenting and Lignin Degradability of a White-Rot Fungus Coriolopsis trogii Using Industrial Lignin as Substrate. Appl Biochem Biotechnol 2022; 194:5220-5235. [PMID: 35723831 DOI: 10.1007/s12010-022-04004-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/27/2022] [Indexed: 11/02/2022]
Abstract
Bio-depolymerized the lignin macromolecules into low molecular lignin-derived aromatic compounds satisfies the requirement for carbon dioxide peaking and is also one of the important ways to realize lignin valorization. Coriolopsis trogii is a kind of less reported lignin-degrading white-rot fungus. The degradability of a self-isolated C. trogii TS01 on industrial lignins, including enzymatic hydrolysis lignin (EHL) and Kraft lignin (KL), was investigated in this paper. The results indicated that EHL could be used as an efficient carbon source to promote the cell growth and ligninolytic enzyme secretion of C. trogii TS01. Compared with using 2% glucose as carbon source, 1% EHL plus 1% glucose would increase the maximum cell dry weight, laccase activity, and manganese-dependent peroxidase activity of C. trogii TS01 by 24.8%, 164.1%, and 200%, respectively. However, the cell growth and ligninolytic enzyme secretion would be significantly inhibited in the case of 1% KL plus 1% glucose used as carbon source. As a result, at the 12th day of fermentation, the degradation rates of EHL and KL were 50.6% and 5.7%, respectively. The UV and FTIR analysis indicated that after been fermented by C. trogii TS01, S-unit content in EHL was decreased by 12.5% but G-unit content was increased by 53.7%. In conclusion, the research of this paper will provide a promising solution for the valorization of enzymatic hydrolysis lignin since the high biodegradation rate of lignin and high activity of ligninolytic enzymes could be achieved simultaneously.
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21
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Qin Y, Wang N, Ma Z, Li J, Wang Y, Zang L. A mechanistic study on electro-Fenton system cooperating with phangerochate chrysosporium to degrade lignin. RSC Adv 2022; 12:17285-17293. [PMID: 35765444 PMCID: PMC9186436 DOI: 10.1039/d2ra01763f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 06/06/2022] [Indexed: 11/21/2022] Open
Abstract
The combined catalytic system of Electro-Fenton (E-Fenton) and Phanerochaete chrysosporium (P. chrysosporium) was constructed in liquid medium with additional potential to overcome the limitations of lignin degradation by white rot fungi alone. To further understand the mechanism of synergistic catalysis, we optimized the optimum potential for lignin catalysis by P. chrysosporium and built synergistic versus separate catalyses. After 48 h of incubation, the optimum growth environment and the highest lignin degradation rate (43.8%) of P. chrysosporium were achieved when 4 V was applied. After 96 h, the lignin degradation rate of the cocatalytic system was 62% (E-Fenton catalysis alone 22% and P. chrysosporium catalysis alone 19%), the pH of the growth maintenance system of P. chrysosporium was approximately 3.5, and the lignin peroxidase (LiP) and manganese-dependent peroxidase (MnP) enzyme activities, were significantly better than those of the control. The qPCR results indicated that the expression of both MnP and LiP genes was higher in the cocatalytic system. Meanwhile, FTIR and 2D-HSQC NMR confirmed that the synergistic catalysis was effective in breaking the aromatic functional groups and the side chains of the aliphatic region of lignin. This study showed that the synergistic catalytic process of electro-Fenton and P. chrysosporium was highly efficient in the degradation of lignin. In addition, the synergetic system is simple to operate, economical and green, and has good prospects for industrial application.
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Affiliation(s)
- Yingjian Qin
- College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Science) Jinan 250353 Shandong P.R. China +86 13325127799
| | - Na Wang
- College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Science) Jinan 250353 Shandong P.R. China +86 13325127799
| | - Zhongmin Ma
- College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Science) Jinan 250353 Shandong P.R. China +86 13325127799
| | - Jinsheng Li
- Weifang Ensign Industry Co., Ltd Changle 262499 Shandong P.R. China
| | - Yaozong Wang
- Weifang Ensign Industry Co., Ltd Changle 262499 Shandong P.R. China
| | - Lihua Zang
- College of Environmental Science and Engineering, Qilu University of Technology (Shandong Academy of Science) Jinan 250353 Shandong P.R. China +86 13325127799
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22
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Jian T, Zhou Y, Wang P, Yang W, Mu P, Zhang X, Zhang X, Chen CL. Highly stable and tunable peptoid/hemin enzymatic mimetics with natural peroxidase-like activities. Nat Commun 2022; 13:3025. [PMID: 35641490 PMCID: PMC9156750 DOI: 10.1038/s41467-022-30285-9] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 04/25/2022] [Indexed: 02/05/2023] Open
Abstract
Developing tunable and stable peroxidase mimetics with high catalytic efficiency provides a promising opportunity to improve and expand enzymatic catalysis in lignin depolymerization. A class of peptoid-based peroxidase mimetics with tunable catalytic activity and high stability is developed by constructing peptoids and hemins into self-assembled crystalline nanomaterials. By varying peptoid side chain chemistry to tailor the microenvironment of active sites, these self-assembled peptoid/hemin nanomaterials (Pep/hemin) exhibit highly modulable catalytic activities toward two lignin model substrates 2,2-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) and 3,3’,5,5’-tetramethylbenzidine. Among them, a Pep/hemin complex containing the pyridyl side chain showed the best catalytic efficiency (Vmax/Km = 5.81 × 10−3 s−1). These Pep/hemin catalysts are highly stable; kinetics studies suggest that they follow a peroxidase-like mechanism. Moreover, they exhibit a high efficacy on depolymerization of a biorefinery lignin. Because Pep/hemin catalysts are highly robust and tunable, we expect that they offer tremendous opportunities for lignin valorization to high value products. Peroxidase mimics are currently being investigated as catalysts for lignin depolymerisation. In this article, the authors investigate a class of self-assembled and highly stable peptoid/hemin nanomaterials as peroxidase mimics that are highly stable and tuneable for the depolymerisation of a biorefinery lignin.
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Affiliation(s)
- Tengyue Jian
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Yicheng Zhou
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA.,The Voiland School of Chemical Engineering and Bioengineering, Washington State University, Richland, WA, 99354, USA
| | - Peipei Wang
- The Voiland School of Chemical Engineering and Bioengineering, Washington State University, Richland, WA, 99354, USA
| | - Wenchao Yang
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA.,School of Chemical Engineering and Technology, State Key Laboratory of Chemical Engineering, Tianjin University, Tianjin, 300072, People's Republic of China
| | - Peng Mu
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA.,Department of Mechanical Engineering and Materials Science and Engineering Program, State University of New York, Binghamton, NY, 13902, USA
| | - Xin Zhang
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA
| | - Xiao Zhang
- The Voiland School of Chemical Engineering and Bioengineering, Washington State University, Richland, WA, 99354, USA.
| | - Chun-Long Chen
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, WA, 99352, USA. .,Department of Chemical Engineering, University of Washington, Seattle, WA, 98195, USA.
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23
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Raghav D, Jyoti A, Siddiqui AJ, Saxena J. Plant associated endophytic fungi as potential bio-factories for extracellular enzymes: Progress, Challenges and Strain improvement with precision approaches. J Appl Microbiol 2022; 133:287-310. [PMID: 35396804 DOI: 10.1111/jam.15574] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 03/04/2022] [Accepted: 04/04/2022] [Indexed: 11/29/2022]
Abstract
There is an intricate network of relations between endophytic fungi and their hosts that affects the production of various bioactive compounds. Plant-associated endophytic contain industrially important enzymes and have the potential to fulfill their rapid demand in the international market to boost business in technology. Being safe and metabolically active, they have replaced the usage of toxic and harmful chemicals and hold a credible application in biotransformation, bioremediation, and industrial processes. Despite these, there are limited reports on fungal endophytes that can directly cater to the demand and supply of industrially stable enzymes. The underlying reasons include low endogenous production and secretion of enzymes from fungal endophytes which have raised concern for widely accepted applications. Hence it is imperative to augment the biosynthetic and secretory potential of fungal endophytes. Modern state-of-the-art biotechnological technologies aiming at strain improvement using cell factory engineering as well as precise gene editing like Clustered Regularly Interspaced Palindromic Repeats (CRISPR) and its Associated proteins (Cas) systems which can provide a boost in fungal endophyte enzyme production. Additionally, it is vital to characterize optimum conditions to grow one strain with multiple enzymes (OSME). The present review encompasses various plants-derived endophytic fungal enzymes and their applications in various sectors. Further, we postulate the feasibility of new precision approaches with an aim for strain improvement and enhanced enzyme production.
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Affiliation(s)
- Divyangi Raghav
- Faculty of Applied Sciences and Biotechnology, Shoolini University of Biotechnology and Management Sciences, Solan, Himachal Pradesh, India
| | - Anupam Jyoti
- Faculty of Applied Sciences and Biotechnology, Shoolini University of Biotechnology and Management Sciences, Solan, Himachal Pradesh, India.,Department of Biotechnology, University Institute of Biotechnology, Chandigarh University, SAS, Nagar, Punjab
| | - Arif Jamal Siddiqui
- Department of Biology, College of Science, University of Ha'il, Ha'il, P O Box, Saudi Arabia
| | - Juhi Saxena
- Faculty of Applied Sciences and Biotechnology, Shoolini University of Biotechnology and Management Sciences, Solan, Himachal Pradesh, India.,Department of Biotechnology, University Institute of Biotechnology, Chandigarh University, SAS, Nagar, Punjab
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24
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Improved Foods Using Enzymes from Basidiomycetes. Processes (Basel) 2022. [DOI: 10.3390/pr10040726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/10/2022] Open
Abstract
Within the kingdom of fungi, the division Basidiomycota represents more than 30,000 species, some with huge genomes indicating great metabolic potential. The fruiting bodies of many basidiomycetes are appreciated as food (“mushrooms”). Solid-state and submerged cultivation processes have been established for many species. Specifically, xylophilic fungi secrete numerous enzymes but also form smaller metabolites along unique pathways; both groups of compounds may be of interest to the food processing industry. To stimulate further research and not aim at comprehensiveness in the broad field, this review describes some recent progress in fermentation processes and the knowledge of fungal genetics. Processes with potential for food applications based on lipases, esterases, glycosidases, peptidases and oxidoreductases are presented. The formation and degradation of colourants, the degradation of harmful food components, the formation of food ingredients and particularly of volatile and non-volatile flavours serve as examples. In summary, edible basidiomycetes are foods—and catalysts—for food applications and rich donors of genes to construct heterologous cell factories for fermentation processes. Options arise to support the worldwide trend toward greener, more eco-friendly and sustainable processes.
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25
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Lopez Camas K, Ullah A. Depolymerization of lignin into high-value products. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102306] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
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26
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Wang J, Li L, Xu H, Zhang Y, Liu Y, Zhang F, Shen G, Yan L, Wang W, Tang H, Qiu H, Gu JD, Wang W. Construction of a fungal consortium for effective degradation of rice straw lignin and potential application in bio-pulping. BIORESOURCE TECHNOLOGY 2022; 344:126168. [PMID: 34737050 DOI: 10.1016/j.biortech.2021.126168] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Revised: 10/14/2021] [Accepted: 10/16/2021] [Indexed: 06/13/2023]
Abstract
To improve the lignin degradation efficiency, we established a co-culture consortium (LDFC) consisting of Trametes hirsuta BYL-3, Trametes versicolor BYL-7 and Trametes hirsuta BYL-8. The testing results showed that the constructed consortium showed improved the lignin degradation rate by fungi. The optimal cultivation conditions were mixture at 1:1:1 vol ratio of each fungus, 7% (w/v) of inoculum amount, culture temperature at 26 °C, pH was 6.9 and 10 days of culturing time. Under these conditions, the degradation rate of lignin was 39.7%, which was 9.3% higher than those before optimization (30.4%). Using rice straw for treatment by LDFC to papermaking, the paper tensile strength was 8 N, and the ring pressure index was 2.46 N·m/g, which meets the standards for the production of corrugated paper for packaging. These results indicate that LDFC has potential application value to convert rice straw resources for bio-pulping to make papers.
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Affiliation(s)
- Jinghong Wang
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, People's Republic of China; Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing 163319, People's Republic of China
| | - Lingling Li
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, People's Republic of China; Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing 163319, People's Republic of China
| | - Hongmin Xu
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, People's Republic of China; Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing 163319, People's Republic of China
| | - Yali Zhang
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, People's Republic of China; Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing 163319, People's Republic of China
| | - Yuxin Liu
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, People's Republic of China; Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing 163319, People's Republic of China
| | - Fangzheng Zhang
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, People's Republic of China; Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing 163319, People's Republic of China
| | - Guinan Shen
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, People's Republic of China; Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing 163319, People's Republic of China
| | - Lei Yan
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, People's Republic of China; Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing 163319, People's Republic of China
| | - Weiwei Wang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Hongzhi Tang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences & Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, People's Republic of China
| | - Huajiao Qiu
- Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, People's Republic of China
| | - Ji-Dong Gu
- Environmental Science and Technology Research Group, Guangdong Technion - Israel Institute of Technology, 241 Daxue Road, Shantou, Guangdong 515063, People's Republic of China
| | - Weidong Wang
- Heilongjiang Provincial Key Laboratory of Environmental Microbiology and Recycling of Argo-Waste in Cold Region, College of Life Science and Technology, Heilongjiang Bayi Agricultural University, Daqing 163319, People's Republic of China; Engineering Research Center of Processing and Utilization of Grain By-products, Ministry of Education, Daqing 163319, People's Republic of China; Institute of Bast Fiber Crops, Chinese Academy of Agricultural Sciences, Changsha 410205, People's Republic of China.
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27
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Vuong TV, Singh R, Eltis LD, Master ER. The Comparative Abilities of a Small Laccase and a Dye-Decoloring Peroxidase From the Same Bacterium to Transform Natural and Technical Lignins. Front Microbiol 2021; 12:723524. [PMID: 34733245 PMCID: PMC8559727 DOI: 10.3389/fmicb.2021.723524] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 09/23/2021] [Indexed: 11/29/2022] Open
Abstract
The relative ability of the small laccase (sLac) and dye-decoloring peroxidase (DyP2) from Amycolatopsis sp. 75iv2 to transform a variety of lignins was investigated using time-of-flight secondary ion mass spectrometry (ToF-SIMS). The enzymes modified organosolv hardwood lignin to different extents even in the absence of an added mediator. More particularly, sLac decreased the lignin modification metric S (S-lignin)/Ar (total aromatics) by 58% over 16h, while DyP2 lowered this ratio by 31% in the absence of exogenous H2O2. When used on their own, both sLac and DyP2 also modified native lignin present in aspen wood powder, albeit to lesser extents than in the organosolv lignin. The addition of ABTS for sLac and Mn2+ as well as H2O2 for DyP2 led to increased lignin modification in aspen wood powder as reflected by a decrease in the G/Ar metric by up to a further 13%. This highlights the importance of exogenous mediators for transforming lignin within its native matrix. Furthermore, the addition of ABTS reduced the selectivity of sLac for S-lignin over G-lignin, indicating that the mediator also altered the product profiles. Finally, when sLac was included in reactions containing DyP2, in part to generate H2O2in situ, the relative abundance of lignin products differed from individual enzymatic treatments. Overall, these results identify possible routes to tuning lignin modification or delignification through choice of enzyme and mediator. Moreover, the current study expands the application of ToF-SIMS to evaluating enzyme action on technical lignins, which can accelerate the discovery and engineering of industrially relevant enzymes for lignin valorization.
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Affiliation(s)
- Thu V Vuong
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON, Canada
| | - Rahul Singh
- Department of Microbiology and Immunology, BioProducts Institute, The University of British Columbia, Vancouver, BC, Canada.,Genome British Columbia, Vancouver, BC, Canada
| | - Lindsay D Eltis
- Department of Microbiology and Immunology, BioProducts Institute, The University of British Columbia, Vancouver, BC, Canada
| | - Emma R Master
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, Toronto, ON, Canada.,Department of Bioproducts and Biosystems, Aalto University, Espoo, Finland
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28
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Mushroom Ligninolytic Enzymes―Features and Application of Potential Enzymes for Conversion of Lignin into Bio-Based Chemicals and Materials. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11136161] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Mushroom ligninolytic enzymes are attractive biocatalysts that can degrade lignin through oxido-reduction. Laccase, lignin peroxidase, manganese peroxidase, and versatile peroxidase are the main enzymes that depolymerize highly complex lignin structures containing aromatic or aliphatic moieties and oxidize the subunits of monolignol associated with oxidizing agents. Among these enzymes, mushroom laccases are secreted glycoproteins, belonging to a polyphenol oxidase family, which have a powerful oxidizing capability that catalyzes the modification of lignin using synthetic or natural mediators by radical mechanisms via lignin bond cleavage. The high redox potential laccase within mediators can catalyze the oxidation of a wide range of substrates and the polymerization of lignin derivatives for value-added chemicals and materials. The chemoenzymatic process using mushroom laccases has been applied effectively for lignin utilization and the degradation of recalcitrant chemicals as an eco-friendly technology. Laccase-mediated grafting has also been employed to modify lignin and other polymers to obtain novel functional groups able to conjugate small and macro-biomolecules. In this review, the biochemical features of mushroom ligninolytic enzymes and their potential applications in catalytic reactions involving lignin and its derivatives to obtain value-added chemicals and novel materials in lignin valorization are discussed.
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29
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Singh AK, Bilal M, Iqbal HMN, Raj A. Lignin peroxidase in focus for catalytic elimination of contaminants - A critical review on recent progress and perspectives. Int J Biol Macromol 2021; 177:58-82. [PMID: 33577817 DOI: 10.1016/j.ijbiomac.2021.02.032] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 02/02/2021] [Accepted: 02/04/2021] [Indexed: 02/05/2023]
Abstract
Lignin peroxidase (LiP) seems to be a catalyst for cleaving high-redox potential non-phenolic compounds with an oxidative cleavage of CC and COC bonds. LiP has been picked to seek a practical and cost-effective alternative to the sustainable mitigation of diverse environmental contaminants. LiP has been an outstanding tool for catalytic cleaning and efficient mitigation of environmental pollutants, including lignin, lignin derivatives, dyes, endocrine-disrupting compounds (EDCs), and persistent organic pollutants (POPs) for the past couple of decades. The extended deployment of LiP has proved to be a promising method for catalyzing these environmentally related hazardous pollutants of supreme interest. The advantageous potential and capabilities to act at different pH and thermostability offer its working tendencies in extended environmental engineering applications. Such advantages led to the emerging demand for LiP and increasing requirements in industrial and biotechnological sectors. The multitude of the ability attributed to LiP is triggered by its stability in xenobiotic and non-phenolic compound degradation. However, over the decades, the catalytic activity of LiP has been continuing in focus enormously towards catalytic functionalities over the available physiochemical, conventional, catalyst mediated technology for catalyzing such molecules. To cover this literature gap, this became much more evident to consider the catalytic attributes of LiP. In this review, the existing capabilities of LiP and other competencies have been described with recent updates. Furthermore, numerous recently emerged applications, such as textile effluent treatment, dye decolorization, catalytic elimination of pharmaceutical and EDCs compounds, have been discussed with suitable examples.
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Affiliation(s)
- Anil Kumar Singh
- Environmental Microbiology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Muhammad Bilal
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huaian 223003, China
| | - Hafiz M N Iqbal
- Tecnologico de Monterrey, School of Engineering and Sciences, Monterrey 64849, Mexico.
| | - Abhay Raj
- Environmental Microbiology Laboratory, Environmental Toxicology Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
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30
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de Eugenio LI, Peces-Pérez R, Linde D, Prieto A, Barriuso J, Ruiz-Dueñas FJ, Martínez MJ. Characterization of a Dye-Decolorizing Peroxidase from Irpex lacteus Expressed in Escherichia coli: An Enzyme with Wide Substrate Specificity Able to Transform Lignosulfonates. J Fungi (Basel) 2021; 7:325. [PMID: 33922393 PMCID: PMC8145141 DOI: 10.3390/jof7050325] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 04/18/2021] [Accepted: 04/19/2021] [Indexed: 11/17/2022] Open
Abstract
A dye-decolorizing peroxidase (DyP) from Irpex lacteus was cloned and heterologously expressed as inclusion bodies in Escherichia coli. The protein was purified in one chromatographic step after its in vitro activation. It was active on ABTS, 2,6-dimethoxyphenol (DMP), and anthraquinoid and azo dyes as reported for other fungal DyPs, but it was also able to oxidize Mn2+ (as manganese peroxidases and versatile peroxidases) and veratryl alcohol (VA) (as lignin peroxidases and versatile peroxidases). This corroborated that I. lacteus DyPs are the only enzymes able to oxidize high redox potential dyes, VA and Mn+2. Phylogenetic analysis grouped this enzyme with other type D-DyPs from basidiomycetes. In addition to its interest for dye decolorization, the results of the transformation of softwood and hardwood lignosulfonates suggest a putative biological role of this enzyme in the degradation of phenolic lignin.
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Affiliation(s)
| | | | | | | | | | | | - María Jesús Martínez
- Centro de Investigaciones Biológicas Margarita Salas (CIB), Consejo Superior de Investigaciones Científicas (CSIC), Ramiro de Maeztu 9, 28040 Madrid, Spain; (L.I.d.E.); (R.P.-P.); (D.L.); (A.P.); (J.B.); (F.J.R.-D.)
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