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Chang C, Guo Y, Tang K, Hu Y, Xu W, Chen W, McLaughlin N, Wang Z. Straw from Different Crop Species Recruits Different Communities of Lignocellulose-Degrading Microorganisms in Black Soil. Microorganisms 2024; 12:938. [PMID: 38792768 PMCID: PMC11123855 DOI: 10.3390/microorganisms12050938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 04/26/2024] [Accepted: 04/29/2024] [Indexed: 05/26/2024] Open
Abstract
The biological degradation of plant residues in the soil or on the soil surface is an integral part of the natural life cycle of annual plants and does not have adverse effects on the environment. Crop straw is characterized by a complex structure and exhibits stability and resistance to rapid microbial decomposition. In this study, we conducted a microcosm experiment to investigate the dynamic succession of the soil microbial community and the functional characteristics associated with lignocellulose-degrading pathways. Additionally, we aimed to identify lignocellulose-degrading microorganisms from the straw of three crop species prevalent in Northeast China: soybean (Glycine max Merr.), rice (Oryza sativa L.), and maize (Zea mays L.). Our findings revealed that both the type of straw and the degradation time influenced the bacterial and fungal community structure and composition. Metagenome sequencing results demonstrated that during degradation, different straw types assembled carbohydrate-active enzymes (CAZymes) and KEGG pathways in distinct manners, contributing to lignocellulose and hemicellulose degradation. Furthermore, isolation of lignocellulose-degrading microbes yielded 59 bacterial and 14 fungal strains contributing to straw degradation, with fungi generally exhibiting superior lignocellulose-degrading enzyme production compared to bacteria. Experiments were conducted to assess the potential synergistic effects of synthetic microbial communities (SynComs) comprising both fungi and bacteria. These SynComs resulted in a straw weight loss of 42% at 15 days post-inoculation, representing a 22% increase compared to conditions without any SynComs. In summary, our study provides novel ecological insights into crop straw degradation by microbes.
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Affiliation(s)
- Chunling Chang
- College of Life Science and Agroforestry, Qiqihar University, Qiqihar 161006, China; (C.C.); (Y.G.); (K.T.); (Y.H.); (W.X.); (W.C.)
- Heilongjiang Provincial Technology Innovation Center of Agromicrobial Preparation Industrialization, Qiqihar 161006, China
- Heilongjiang Provincial Collaborative Innovation Center of Agrobiological Preparation Industrialization, Qiqihar 161006, China
| | - Yue Guo
- College of Life Science and Agroforestry, Qiqihar University, Qiqihar 161006, China; (C.C.); (Y.G.); (K.T.); (Y.H.); (W.X.); (W.C.)
- Heilongjiang Provincial Technology Innovation Center of Agromicrobial Preparation Industrialization, Qiqihar 161006, China
- Heilongjiang Provincial Collaborative Innovation Center of Agrobiological Preparation Industrialization, Qiqihar 161006, China
| | - Kuanqiang Tang
- College of Life Science and Agroforestry, Qiqihar University, Qiqihar 161006, China; (C.C.); (Y.G.); (K.T.); (Y.H.); (W.X.); (W.C.)
- Heilongjiang Provincial Technology Innovation Center of Agromicrobial Preparation Industrialization, Qiqihar 161006, China
- Heilongjiang Provincial Collaborative Innovation Center of Agrobiological Preparation Industrialization, Qiqihar 161006, China
| | - Yunlong Hu
- College of Life Science and Agroforestry, Qiqihar University, Qiqihar 161006, China; (C.C.); (Y.G.); (K.T.); (Y.H.); (W.X.); (W.C.)
- Heilongjiang Provincial Technology Innovation Center of Agromicrobial Preparation Industrialization, Qiqihar 161006, China
- Heilongjiang Provincial Collaborative Innovation Center of Agrobiological Preparation Industrialization, Qiqihar 161006, China
| | - Weihui Xu
- College of Life Science and Agroforestry, Qiqihar University, Qiqihar 161006, China; (C.C.); (Y.G.); (K.T.); (Y.H.); (W.X.); (W.C.)
- Heilongjiang Provincial Technology Innovation Center of Agromicrobial Preparation Industrialization, Qiqihar 161006, China
- Heilongjiang Provincial Collaborative Innovation Center of Agrobiological Preparation Industrialization, Qiqihar 161006, China
| | - Wenjing Chen
- College of Life Science and Agroforestry, Qiqihar University, Qiqihar 161006, China; (C.C.); (Y.G.); (K.T.); (Y.H.); (W.X.); (W.C.)
- Heilongjiang Provincial Technology Innovation Center of Agromicrobial Preparation Industrialization, Qiqihar 161006, China
- Heilongjiang Provincial Collaborative Innovation Center of Agrobiological Preparation Industrialization, Qiqihar 161006, China
| | - Neil McLaughlin
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON K1A 0C6, Canada;
| | - Zhigang Wang
- College of Life Science and Agroforestry, Qiqihar University, Qiqihar 161006, China; (C.C.); (Y.G.); (K.T.); (Y.H.); (W.X.); (W.C.)
- Heilongjiang Provincial Technology Innovation Center of Agromicrobial Preparation Industrialization, Qiqihar 161006, China
- Heilongjiang Provincial Collaborative Innovation Center of Agrobiological Preparation Industrialization, Qiqihar 161006, China
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Chen R, Gong Y, Xie M, Rao C, Zhou L, Pang Y, Lou H, Yang D, Qiu X. Functionalized Regulation of Metal Defects in ln 2S 3 of p-n Homojunctions. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:5065-5077. [PMID: 36972499 DOI: 10.1021/acs.langmuir.3c00051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
The introduction of metal vacancies into n-type semiconductors could efficiently construct intimate contact interface p-n homojunctions to accelerate the separation of photogenerated carriers. In this work, a cationic surfactant occupancy method was developed to synthesize an indium-vacancy (VIn)-enriched p-n amorphous/crystal homojunction of indium sulfide (A/C-IS) for sodium lignosulfonate (SL) degradation. The amount of VIn in the A/C-IS could be regulated by varying the content of added cetyltrimethylammonium bromide (CTAB). Meanwhile, the steric hindrance of CTAB produced mesopores and macropores, providing transfer channels for SL. The degradation rates of A/C-IS to SL were 8.3 and 20.9 times higher than those of crystalline In2S3 and commercial photocatalyst (P25), respectively. The presence of unsaturated dangling bonds formed by VIn reduced the formation energy of superoxide radicals (•O2-). In addition, the inner electric field between the intimate contact interface p-n A/C-IS promoted the migration of electron-hole pairs. A reasonable degradation pathway of SL by A/C-IS was proposed based on the above mechanism. Moreover, the proposed method could also be applicable for the preparation of p-n homojunctions with metal vacancies from other sulfides.
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Affiliation(s)
- Runlin Chen
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yufeng Gong
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Maoliang Xie
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Cheng Rao
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Lan Zhou
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Yuxia Pang
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Hongming Lou
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Dongjie Yang
- School of Chemistry and Chemical Engineering, Guangdong Provincial Key Lab of Green Chemical Product Technology, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xueqing Qiu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, China
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Ding Z, Ge Y, Sar T, Kumar V, Harirchi S, Binod P, Sirohi R, Sindhu R, Wu P, Lin F, Zhang Z, Taherzadeh MJ, Awasthi MK. Valorization of tropical fruits waste for production of commercial biorefinery products - A review. BIORESOURCE TECHNOLOGY 2023; 374:128793. [PMID: 36842509 DOI: 10.1016/j.biortech.2023.128793] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Revised: 02/20/2023] [Accepted: 02/21/2023] [Indexed: 06/18/2023]
Abstract
Tropical fruit wastes (TFW) are considered as the major source of food and nutrition in the topical countries. In the recent years, modernization of agriculture has increased the tropical fruit production. Higher fruit production led to an increasing abundance in the tropical fruit waste. In general, the tropical fruit waste has no economic value and ends up in landfill. But in recent years it was observed that the tropical fruit waste can be valorized to produce value-added products ranging from compost, phytochemicals, and food products to biofuels. The tropical fruit waste has great potential to produce useful products in tropical areas. This review literature is an endeavor to understand the major tropical fruit wastes and their composition. The review presents a detailed investigation on tropical fruit waste composition, its conversion potential, role of microbes in waste valorization, production of commercially valuable products and future perspectives in waste valorization.
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Affiliation(s)
- Zheli Ding
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, Hainan Province 571101, China
| | - Yu Ge
- School of Tropical Crops, Yunnan Agricultural University, Pu'er, Yunnan 665000, China
| | - Taner Sar
- Swedish Centre for Resource Recovery, University of Borås, Borås 50190, Sweden
| | - Vinay Kumar
- Ecotoxicity and Bioconversion Laboratory, Department of Community Medicine, Saveetha Medical College & Hospital, Saveetha Institute of Medical and Technical Sciences (SIMATS), Saveetha Nagar, Thandalam, Chennai 602105, India
| | - Sharareh Harirchi
- Swedish Centre for Resource Recovery, University of Borås, Borås 50190, Sweden
| | - Parameswaran Binod
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695 019, Kerala, India
| | - Ranjna Sirohi
- School of Health Sciences and Technology, University of Petroleum and Energy Studies, Dehradun 248001, Uttarakhand, India
| | - Raveendran Sindhu
- Department of Food Technology, TKM Institute of Technology, Kollam 691 505, Kerala, India
| | - Peicong Wu
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, Hainan Province 571101, China
| | - Fei Lin
- Haikou Experimental Station, Chinese Academy of Tropical Agricultural Sciences (CATAS), Haikou, Hainan Province 571101, China
| | - Zengqiang Zhang
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China
| | | | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi Province 712100, China.
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Sharma V, Tsai ML, Nargotra P, Chen CW, Sun PP, Singhania RR, Patel AK, Dong CD. Journey of lignin from a roadblock to bridge for lignocellulose biorefineries: A comprehensive review. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 861:160560. [PMID: 36574559 DOI: 10.1016/j.scitotenv.2022.160560] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 11/06/2022] [Accepted: 11/24/2022] [Indexed: 06/17/2023]
Abstract
The grave concerns arisen as a result of environmental pollution and diminishing fossil fuel reserves in the 21st century have shifted the focus on the use of sustainable and environment friendly alternative resources. Lignocellulosic biomass constituted by cellulose, hemicellulose and lignin is an abundantly available natural bioresource. Lignin, a natural biopolymer has over the years gained much importance as a high value material with commercial importance. The present review provides an in-depth knowledge on the journey of lignin from being considered a roadblock to a bridge connecting diverse industries with widescale applications. The successful valorization of lignin for the production of bio-based platform chemicals and fuels has been the subject of intensive investigation. A deeper understanding of lignin characteristics and factors governing the biomass conversion into valuable products can support improved biomass consumption. The components of lignocellulosic biomass might be totally transformed into a variety of value-added products with the improvements in bioprocess techniques that valorize lignin. In this review, the recent advances in the lignin extraction and depolymerization methods that may help in achieving the cost-economics of the bioprocess are summarized and compared. The industrial potential of lignin-derived products such as aromatics, biopolymers, biofuels and agrochemicals are also outlined. Additionally, assessment of the recent research trends in lignin valorization into value-added chemicals has been done and present scenario of technological-industrial applications of lignin with economic perspectives is highlighted.
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Affiliation(s)
- Vishal Sharma
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan; Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Mei-Ling Tsai
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Parushi Nargotra
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Chiu-Wen Chen
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan; Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Pei-Pei Sun
- Department of Seafood Science, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan
| | - Reeta Rani Singhania
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan; Centre for Energy and Environmental Sustainability, Lucknow 226 029, India
| | - Anil Kumar Patel
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan; Centre for Energy and Environmental Sustainability, Lucknow 226 029, India
| | - Cheng-Di Dong
- Department of Marine Environmental Engineering, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan; Institute of Aquatic Science and Technology, National Kaohsiung University of Science and Technology, Kaohsiung City, Taiwan.
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Ding Z, Kumar Awasthi S, Kumar M, Kumar V, Mikhailovich Dregulo A, Yadav V, Sindhu R, Binod P, Sarsaiya S, Pandey A, Taherzadeh MJ, Rathour R, Singh L, Zhang Z, Lian Z, Kumar Awasthi M. A thermo-chemical and biotechnological approaches for bamboo waste recycling and conversion to value added product: Towards a zero-waste biorefinery and circular bioeconomy. FUEL 2023; 333:126469. [DOI: 10.1016/j.fuel.2022.126469] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/20/2023]
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6
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Fungal Assisted Valorisation of Polymeric Lignin: Mechanism, Enzymes and Perspectives. Catalysts 2023. [DOI: 10.3390/catal13010149] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Lignocellulose is considered one of the significant recalcitrant materials and also is difficult to break down because of its complex structure. Different microbes such as bacteria and fungi are responsible for breaking down these complex lignin structures. This article discussed briefly the lignin-degrading bacteria and their critical steps involved in lignin depolymerization. In addition, fungi are regarded as the ideal microorganism for the degradation of lignin because of their highly effective hydrolytic and oxidative enzyme systems for the breakdown of lignocellulosic materials. The white rot fungi, mainly belonging to basidiomycetes, is the main degrader of lignin among various microorganisms. This could be achieved because of the presence of lignolytic enzymes such as laccases, lignin peroxidases, and manganese peroxidases. The significance of the fungi and lignolytic enzyme’s role in lignin depolymerization, along with its mechanism and chemical pathways, are emphasized in this article.
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Bélanger N, Prasher S, Dumont MJ. Tailoring biochar production for use as a reinforcing bio-based filler in rubber composites: a review. POLYM-PLAST TECH MAT 2023. [DOI: 10.1080/25740881.2022.2089584] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Nicole Bélanger
- Bioresource Engineering Department, McGill University, QC, Canada
| | - Shiv Prasher
- Bioresource Engineering Department, McGill University, QC, Canada
| | - Marie-Josée Dumont
- Bioresource Engineering Department, McGill University, QC, Canada
- Chemical Engineering Department, Université Laval, QC, Canada
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Bautista‐Guerrero A, Lara‐Diaz RA, Pihen V, Bandala ER, Sanchez‐Sala JL. Isolation and test of novel yeast strains with lignin usage capability and phenolic compound resistance. Microbiologyopen 2022; 11:e1326. [PMID: 36314751 PMCID: PMC9562823 DOI: 10.1002/mbo3.1326] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Accepted: 10/01/2022] [Indexed: 11/06/2022] Open
Abstract
Five yeast fungi strains (i.e., two Cryptococcus albidus, one Candida guillermondii, and two Candida tropicalis) were isolated from sugarcane and tested for their use of lignin as sole carbon source and their potential to grow in the presence of phenol and phenol derivatives (i.e., pentachlorophenol and p‐nitrophenol). The full set of isolated yeasts showed ligninolytic activity, achieving at least 36% lignin degradation after 25 days. The C. albidus JS‐B1 strain had the highest ligninolytic activity, achieving 27% lignin degradation within 4 days. This increased activity was associated with the production of ligninolytic laccase enzymes. All the tested yeast fungi strains showed growth in the presence of high concentrations of phenolic compounds (i.e., 900 mg/L phenol, 200 mg/L p‐nitrophenol, 50 mg/L pentachlorophenol) and showed significant potential for lignin and lignin by‐product degradation. Each of these five strains has the potential to be used in biological treatment processes for contaminated effluents from paper pulping and bleaching or phenol and phenol‐derivative biodegradation processes for other industrial wastewater effluents.
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Affiliation(s)
- Anaid Bautista‐Guerrero
- Department of Civil and Environmental Engineering, Engineering SchoolUniversidad de las Americas PueblaPueblaMexico
| | - Rene A. Lara‐Diaz
- Department of Chemistry and Food Engineering, Engineering SchoolUniversidad de las Americas PueblaPueblaMexico
| | - Valérie Pihen
- Department of Civil and Environmental Engineering, Engineering SchoolUniversidad de las Americas PueblaPueblaMexico
| | - Erick R. Bandala
- Division of Hydrologic SciencesDesert Research InstituteLas VegasNevadaUSA
| | - Jose Luis Sanchez‐Sala
- Department of Chemistry and Biological Sciences, Sciences SchoolUniversidad de las Americas PueblaPueblaMexico
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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: 18] [Impact Index Per Article: 9.0] [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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Shao Q, Li X, Chen Y, Zhang Z, Cui Y, Fan H, Wei D. Investigations on the Fusants From Wide Cross Between White-Rot Fungi and Saccharomyces cerevisiae Reveal Unknown Lignin Degradation Mechanism. Front Microbiol 2022; 13:935462. [PMID: 35898904 PMCID: PMC9310788 DOI: 10.3389/fmicb.2022.935462] [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: 05/04/2022] [Accepted: 06/07/2022] [Indexed: 11/13/2022] Open
Abstract
The degradation of lignocellulose by fungi, especially white-rot fungi, contributes a lot to carbon cycle, bio-fuel production, and many other bio-based applications. However, the existing enzymatic and non-enzymatic degradation mechanisms cannot be unequivocally supported by in vitro simulation experiment, meaning that additional mechanisms might exist. Right now, it is still very difficult to discover new mechanisms with traditional forward genetic approaches. To disclose novel lignin degradation mechanisms in white-rot fungi, a series of fusants from wide cross by protoplast fusion between Pleurotus ostreatus, a well-known lignin-degrading fungus, and Saccharomyces cerevisiae, a well-known model organism unable to degrade lignocellulose, was investigated regarding their abilities to degrade lignin. By analyzing the activity of traditional lignin-degrading enzyme, the ability to utilize pure lignin compounds and degrade corn stalk, a fusant D1-P was screened out and proved not to contain well-recognized lignin-degrading enzyme genes by whole-genome sequencing. Further investigation with two-dimension nuclear magnetic resonance (NMR) shows that D1-P was found to be able to degrade the main lignin structure β-O-4 linkage, leading to reduced level of this structure like that of the wild-type strain P. ostreatus after a 30-day semi-solid fermentation. It was also found that D1-P shows a degradation preference to β-O-4 linkage in Aβ(S)-threo. Therefore, wide cross between white-rot fungi and S. cerevisiae provides a powerful tool to uncover novel lignocellulose degradation mechanism that will contribute to green utilization of lignocellulose to produce bio-fuel and related bio-based refinery.
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Affiliation(s)
- Qi Shao
- Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, China
| | - Xin Li
- Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, China
| | - Ying Chen
- Institute of Agro-Products Preservation and Processing Technology, Tianjin Academy of Agricultural Sciences, Tianjin, China
| | - Zhijun Zhang
- Institute of Agro-Products Preservation and Processing Technology, Tianjin Academy of Agricultural Sciences, Tianjin, China
| | - Yong Cui
- Tianjin Tianren Century Technology Co., Ltd., Tianjin, China
| | - Huan Fan
- Institute of Animal Husbandry and Veterinary Research, Tianjin Academy of Agricultural Sciences, Tianjin, China
- *Correspondence: Huan Fan,
| | - Dongsheng Wei
- Department of Microbiology, College of Life Sciences, Nankai University, Tianjin, China
- Dongsheng Wei,
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Ćilerdžić J, Galić M, Stajić M. From pomiculture waste to biotechnological raw material: efficient transformation using ligninosomes and cellulosomes from Pleurotus spp. BIORESOUR BIOPROCESS 2022; 9:66. [PMID: 38647551 PMCID: PMC10991930 DOI: 10.1186/s40643-022-00555-x] [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: 02/24/2022] [Accepted: 06/01/2022] [Indexed: 11/10/2022] Open
Abstract
The goal of this study was to determine the capacity of Pleurotus spp. lignocellulosome to transform frequent pomiculture residues (grapevine-, plum-, and raspberry sawdust) into raw materials for biotechnological processes. All three lignocellulosics induced the synthesis of ligninolytic and cellulolytic enzymes in the tested species. Laccase was dominant in the ligninolytic cocktail, with a maximum activity of 40,494.88 U L-1 observed after the cultivation of P. pulmonarius on grapevine sawdust. Grapevine sawdust also proved to be the optimal substrate for the synthesis of versatile peroxidases especially in P. eryngii (1010.10 U L-1), while raspberry sawdust favored the production of Mn-dependent peroxidase in P. pulmonarius (479.17 U L-1). P. pulmonarius was the dominant cellulolytic agent and raspberry sawdust was optimal for the synthesis of xylanases, and endo- and exo-cellulases (15,746.35 U L-1, 9741.56 U L-1, and 836.62 U L-1), while grapevine sawdust mostly induced β-glucosidase activity (166.11 U L-1). The degree of residues delignification was more substrate- than species-dependent, ranging between 6.44 and 23.72% after the fermentation of grapevine and raspberry sawdust with P. pulmonarius. On the other hand, the lowest level of cellulose consumption was also observed on raspberry sawdust after the cultivation of P. eryngii, which together with high delignification also induced the highest selectivity index (1.27). The obtained results show the exceptional lignocellulolytic potential of Pleurotus spp. enzyme cocktails which opens up many possibilities for their application in numerous biotechnological processes.
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Affiliation(s)
- Jasmina Ćilerdžić
- Faculty of Biology, University of Belgrade, Takovska 43, 11000, Belgrade, Serbia.
| | - Milica Galić
- Faculty of Biology, University of Belgrade, Takovska 43, 11000, Belgrade, Serbia
| | - Mirjana Stajić
- Faculty of Biology, University of Belgrade, Takovska 43, 11000, Belgrade, Serbia
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Omoni VT, Ibeto CN, Lag-Brotons AJ, Bankole PO, Semple KT. Impact of lignocellulosic waste-immobilised white-rot fungi on enhancing the development of 14C-phenanthrene catabolism in soil. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 811:152243. [PMID: 34921880 DOI: 10.1016/j.scitotenv.2021.152243] [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: 07/02/2021] [Revised: 11/30/2021] [Accepted: 12/04/2021] [Indexed: 06/14/2023]
Abstract
In this study, an investigation was carried out to explore the the impact of white-rot fungi (WRF) on enhancing the development of phenanthrene catabolism in soil over time (1, 25, 50, 75 and 100 d). The WRF were immobilised on spent brewery grains (SBG) prior to inoculation to the soil. The results showed that SBG-immobilised WRF-amended soils reduced the lag phases and increased the extents of 14C-phenanthrene mineralisation. Greater reductions in the lag phases and increases in the rates of mineralisation were observed in immobilised Trametes versicolor-amended soil compared to the other WRF-amendments. However, the presence of Pleurotus ostreatus and Phanerochaete chrysosporium influenced biodegradation more strongly than the other fungal species. In addition, fungal enzyme activities increased in the amended soils and positively correlated with the extents of 14C-phenanthrene mineralisation in all soil amendments. Maximum ligninolytic enzyme activities were observed in P. ostreatus-amended soil. Microbial populations increased in all amended soils while PAH-degrading fungal numbers increased with increased soil-PAH contact time and strongly positively correlated with fastest rates of mineralisation. The findings presented in this study demonstrate that inoculating the soil with these immobilised WRFs generally enhanced the mineralisation of the 14C-phenanthrene in soil. This has the potential to be used to stimulate or enhance PAH catabolism in field-contaminated soils.
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Affiliation(s)
- Victor T Omoni
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK; Department of Microbiology, Federal University of Agriculture, Makurdi P.M.B 2373, Nigeria
| | - Cynthia N Ibeto
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK; Department of Pure and Industrial Chemistry, University of Nigeria, Nsukka, Nigeria
| | | | - Paul O Bankole
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK; Department of Pure and Applied Botany, Federal University of Agriculture, Abeokuta, Nigeria
| | - Kirk T Semple
- Lancaster Environment Centre, Lancaster University, Lancaster LA1 4YQ, UK.
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Wang S, Li W, Liu L, Qi H, You H. Biodegradation of decabromodiphenyl ethane (DBDPE) by white-rot fungus Pleurotus ostreatus: Characteristics, mechanisms, and toxicological response. JOURNAL OF HAZARDOUS MATERIALS 2022; 424:127716. [PMID: 34799166 DOI: 10.1016/j.jhazmat.2021.127716] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/29/2021] [Accepted: 11/03/2021] [Indexed: 06/13/2023]
Abstract
Decabromodiphenyl ethane (DBDPE) can pose a potential toxic threat to human beings and the environment. P. ostreatus, as one of the typical white-rot fungi, can effectively degrade various refractory pollutants. The biodegradable characteristics of DBDPE by P. ostreatus, as well as the mechanisms, and toxicological response were investigated in this study. The removal rate reached 47.73% and 43.20%, respectively, for 5 and 20 mg/L DBDPE after 120-h degradation by P. ostreatus. As a coexisting substance, Pb could inhibit the biodegradation. It is found that both the intracellular enzyme (P450) and extracellular enzymes (manganese peroxidase (MnP), lignin peroxidase (LiP), and laccase (Lac)) played a very important role in the biodegradation of DBDPE, of which Lac dominated the degradation. The toxic response was monitored during the degradation. The activities of SOD and CAT were enhanced to eliminate excess ROS in P. ostreatus triggered by DBDPE. In addition, debromination, hydroxylation, and oxidation were inferred as the main degradation pathways preliminarily. The findings provide a theoretical basis for the application of microbial degradation of DBDPE contamination.
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Affiliation(s)
- Shutao Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Wanlun Li
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; Harbin Institute of Technology, 73, Huanghe Rd, Nangang Dist, Harbin 150090, China.
| | - Lu Liu
- Department of Pharmacy, The First Affiliated Hospital of Harbin Medical University, Harbin 150001, China; Department of Pharmacy, The First Affiliated Hospital of Harbin Medical University, 23, Youzheng St., Nangang Dist, Harbin 150001, China.
| | - Hong Qi
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; Harbin Institute of Technology, 73, Huanghe Rd, Nangang Dist, Harbin 150090, China.
| | - Hong You
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China; Harbin Institute of Technology, 73, Huanghe Rd, Nangang Dist, Harbin 150090, China.
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15
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Reshmy R, Athiyaman Balakumaran P, Divakar K, Philip E, Madhavan A, Pugazhendhi A, Sirohi R, Binod P, Kumar Awasthi M, Sindhu R. Microbial valorization of lignin: Prospects and challenges. BIORESOURCE TECHNOLOGY 2022; 344:126240. [PMID: 34737164 DOI: 10.1016/j.biortech.2021.126240] [Citation(s) in RCA: 35] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Revised: 10/22/2021] [Accepted: 10/23/2021] [Indexed: 06/13/2023]
Abstract
Lignin is the world's second most prevalent biomaterial, but its effective value-added product valorization methods are still being developed. The most common preparation processes for converting lignin to platform chemicals and biofuels are fragmentation and depolymerization. Due to its structural diversity, fragmentation generally produces a variety of products, necessitating tedious separation and purifying methods to isolate the desired products. Bacterial-based techniques are commonly utilized for lignin fragmentation due to their high metabolitic activity. Recent advancements in lignin valorization utilizing bacteria, such as lignin decomposing microbes and major pathways involved that can breakdown lignin into various valuable products namely lipids, furfural, vanillin, polyhydroxybutyrate, poly lactic acid blends were discussed in this review. This review also covers the genetic and fermentation methodologies to enhance lignin decomposition, challenges and future trends of microbe based lignin valorization.
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Affiliation(s)
- R Reshmy
- Post Graduate and Research Department of Chemistry, Bishop Moore College, Mavelikara 690 110, Kerala, India
| | - Palanisamy Athiyaman Balakumaran
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695 019, Kerala, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - K Divakar
- Department of Biotechnology, Sri Venkateswara College of Engineering, Sriperumbudur 602 117, Tamil Nadu, India
| | - Eapen Philip
- Post Graduate and Research Department of Chemistry, Bishop Moore College, Mavelikara 690 110, Kerala, India
| | - Aravind Madhavan
- Rajiv Gandhi Centre for Biotechnology, Jagathy, Thiruvananthapuram 695 014, Kerala, India
| | - Arivalagan Pugazhendhi
- School of Renewable Energy, Maejo University, Chiang Mai 50290, Thailand; College of Medical and Health Science, Asia University, Taichung, Taiwan
| | - Ranjna Sirohi
- Department of Chemical & Biological Engineering, Korea University, Seoul 136713, Republic of Korea; Centre for Energy and Environmental Sustainability, Lucknow 226 029, Uttar Pradesh, India
| | - Parameswaran Binod
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695 019, Kerala, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh 201002, India
| | - Mukesh Kumar Awasthi
- College of Natural Resources and Environment, Northwest A & F University, Yangling, Shaanxi 712 100, China
| | - Raveendran Sindhu
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Trivandrum 695 019, Kerala, India.
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Niu J, Li X, Qi X, Ren Y. Pathway analysis of the biodegradation of lignin by Brevibacillus thermoruber. BIORESOURCE TECHNOLOGY 2021; 341:125875. [PMID: 34523569 DOI: 10.1016/j.biortech.2021.125875] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 08/29/2021] [Accepted: 08/30/2021] [Indexed: 06/13/2023]
Abstract
With increased interest in the biodegradation of lignin, there is a pressing need to evaluate the feasibility of using microorganisms for lignin degradation. A novel Bacillus strain was separated from compost and identified as Brevibacillus thermoruber. B. thermoruber showed excellent performance in lignin degradation and degraded 81.97% of lignin after 7 d, which was similar to the lignin degradation rate of fungi. The biodegradation of lignin G and H monomers mainly proceeded via the β-ketoadipate pathway at 37 °C. At 55 °C, the degradation product of lignin S monomer was mainly a benzoic acid substance, indicating that the lignin was degraded via the benzoic acid pathway. The degradation products of lignin are important precursors for humus formation in compost. The results of this study provide new insights into the biodegradation pathway of lignin in different stages of composting.
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Affiliation(s)
- Jiayu Niu
- Laboratory of Environmental Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, PR China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi 214122, PR China; Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, Suzhou 215009, PR China
| | - Xiufen Li
- Laboratory of Environmental Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, PR China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi 214122, PR China; Jiangsu Cooperative Innovation Center of Technology and Material of Water Treatment, Suzhou 215009, PR China.
| | - Xiguang Qi
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, PR China
| | - Yueping Ren
- Laboratory of Environmental Biotechnology, School of Environmental and Civil Engineering, Jiangnan University, Wuxi, Jiangsu 214122, PR China; Jiangsu Key Laboratory of Anaerobic Biotechnology, Wuxi 214122, PR China; Jiangsu Engineering Laboratory for Biomass Energy and Carbon Reduction Technology, PR China
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Mendes IV, Garcia MB, Bitencourt ACA, Santana RH, Lins PDC, Silveira R, Simmons BA, Gladden JM, Kruger RH, Quirino BF. Bacterial diversity dynamics in microbial consortia selected for lignin utilization. PLoS One 2021; 16:e0255083. [PMID: 34516585 PMCID: PMC8437272 DOI: 10.1371/journal.pone.0255083] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Accepted: 07/10/2021] [Indexed: 01/23/2023] Open
Abstract
Lignin is nature's largest source of phenolic compounds. Its recalcitrance to enzymatic conversion is still a limiting step to increase the value of lignin. Although bacteria are able to degrade lignin in nature, most studies have focused on lignin degradation by fungi. To understand which bacteria are able to use lignin as the sole carbon source, natural selection over time was used to obtain enriched microbial consortia over a 12-week period. The source of microorganisms to establish these microbial consortia were commercial and backyard compost soils. Cultivation occurred at two different temperatures, 30°C and 37°C, in defined culture media containing either Kraft lignin or alkaline-extracted lignin as carbon source. iTag DNA sequencing of bacterial 16S rDNA gene was performed for each of the consortia at six timepoints (passages). The initial bacterial richness and diversity of backyard compost soil consortia was greater than that of commercial soil consortia, and both parameters decreased after the enrichment protocol, corroborating that selection was occurring. Bacterial consortia composition tended to stabilize from the fourth passage on. After the enrichment protocol, Firmicutes phylum bacteria were predominant when lignin extracted by alkaline method was used as a carbon source, whereas Proteobacteria were predominant when Kraft lignin was used. Bray-Curtis dissimilarity calculations at genus level, visualized using NMDS plots, showed that the type of lignin used as a carbon source contributed more to differentiate the bacterial consortia than the variable temperature. The main known bacterial genera selected to use lignin as a carbon source were Altererythrobacter, Aminobacter, Bacillus, Burkholderia, Lysinibacillus, Microvirga, Mycobacterium, Ochrobactrum, Paenibacillus, Pseudomonas, Pseudoxanthomonas, Rhizobiales and Sphingobium. These selected bacterial genera can be of particular interest for studying lignin degradation and utilization, as well as for lignin-related biotechnology applications.
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Affiliation(s)
- Isis Viana Mendes
- Embrapa Agroenergia, Parque Estação Biológica (PqEB), PqEB s/n, Brasília, DF, Brazil
- Universidade de Brasília, Brasília, DF, Brazil
| | - Mariana Botelho Garcia
- Embrapa Agroenergia, Parque Estação Biológica (PqEB), PqEB s/n, Brasília, DF, Brazil
- Universidade Católica de Brasília, Brasília, DF, Brazil
| | - Ana Carolina Araújo Bitencourt
- Embrapa Agroenergia, Parque Estação Biológica (PqEB), PqEB s/n, Brasília, DF, Brazil
- Universidade de Brasília, Brasília, DF, Brazil
| | | | - Philippe de Castro Lins
- Embrapa Agroenergia, Parque Estação Biológica (PqEB), PqEB s/n, Brasília, DF, Brazil
- Universidade de Brasília, Brasília, DF, Brazil
| | | | - Blake A. Simmons
- Deconstruction Division, Joint BioEnergy Institute, Emeryville, California, United States of America
| | - John M. Gladden
- Deconstruction Division, Joint BioEnergy Institute, Emeryville, California, United States of America
- Department of Biomass Science and Conversion Technology, Sandia National Laboratories, Livermore, California, United States of America
| | | | - Betania Ferraz Quirino
- Embrapa Agroenergia, Parque Estação Biológica (PqEB), PqEB s/n, Brasília, DF, Brazil
- Universidade de Brasília, Brasília, DF, Brazil
- Universidade Católica de Brasília, Brasília, DF, Brazil
- * E-mail: ,
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Li H, He Z, Jiang Y, Kan J, Peng T, Zhong M, Hu Z. Bioconversion of bamboo shoot shells through the cultivation of the edible mushrooms Volvariella volvacea. ECOTOXICOLOGY (LONDON, ENGLAND) 2021; 30:1476-1486. [PMID: 32980948 DOI: 10.1007/s10646-020-02281-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/11/2020] [Indexed: 06/11/2023]
Abstract
Bamboo shoot shell (BSS), as agricultural waste, is mostly burned or discarded, causing serious environment pollution. In this study, the degradation and utilization of BSS by the edible fungus Volvariella Volvacea was investigated. The composition of V. volvacea fruit body was determined by HPLC-MS, GC-MS and ICP-OES. The activities of CMCase and xylanase were monitored by DNS (3,5-dinitrosalicylic acid) method. Laccase activity was assayed by the oxidation reaction of ABTS [2,2'-azinobis-(3-ethylbenzthiazoline-6-sulphonate)]. The degraded bamboo shoot shell powder was characterized by FTIR and SEM. The results showed that the mycelium of V. volvacea could degrade and utilize BSS for growth. The activities of carboxymethyl cellulase and laccase were increased during the cultivation. At the same time, the physical structure of the shell fiber becames porous and rough. Most of the products of decayed fibers contain alkanes, ethyl or methyl groups. Moreover, the biological efficiency (fruiting body yield) of V. volvacea cultivated on BSS was 1.52-fold higher than that of straw cultivation. The contents of total lipid, elaidic acid (C18:1n-9), total essential amino acids, total amino acids and iron in V. volvacea fruit bodies grown on BSS were 1.11, 1.66, 1.52, 1.60 and 1.30-fold higher than those of straw treatment, respectively. This study provides an effective method to solve the environmental pollution caused by BSS, and provides a new way for the potential utilization of BSS in edible fungi cultivation.
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Affiliation(s)
- Haibin Li
- Department of Biology, Shantou University, Shantou, 515063, Guangdong, China
- Department of Chemical Engineering, Jieyang Polytechnic, Jieyang, 522000, Guangdong, China
| | - Zhixiao He
- Department of Biology, Shantou University, Shantou, 515063, Guangdong, China
| | - Yingzhi Jiang
- Department of Chemical Engineering, Jieyang Polytechnic, Jieyang, 522000, Guangdong, China
| | - Jie Kan
- Department of Biology, Shantou University, Shantou, 515063, Guangdong, China
| | - Tao Peng
- Department of Biology, Shantou University, Shantou, 515063, Guangdong, China
| | - Mingqi Zhong
- Department of Biology, Shantou University, Shantou, 515063, Guangdong, China.
| | - Zhong Hu
- Department of Biology, Shantou University, Shantou, 515063, Guangdong, China.
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Cui T, Yuan B, Guo H, Tian H, Wang W, Ma Y, Li C, Fei Q. Enhanced lignin biodegradation by consortium of white rot fungi: microbial synergistic effects and product mapping. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:162. [PMID: 34301305 PMCID: PMC8299586 DOI: 10.1186/s13068-021-02011-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Accepted: 07/07/2021] [Indexed: 05/13/2023]
Abstract
BACKGROUND As one of the major components of lignocellulosic biomass, lignin has been considered as the most abundant renewable aromatic feedstock in the world. Comparing with thermal or catalytic strategies for lignin degradation, biological conversion is a promising approach featuring with mild conditions and diversity, and has received great attention nowadays. RESULTS In this study, a consortium of white rot fungi composed of Lenzites betulina and Trametes versicolor was employed to enhance the ligninolytic enzyme activity of laccase (Lac) and manganese peroxidase (MnP) under microbial synergism. The maximum enzymatic activity of Lac and MnP was individually 18.06 U mL-1 and 13.58 U mL-1 along with a lignin degradation rate of 50% (wt/wt), which were achieved from batch cultivation of the consortium. The activities of Lac and MnP obtained from the consortium were both improved more than 40%, as compared with monocultures of L. betulina or T. versicolor under the same culture condition. The enhanced biodegradation performance was in accordance with the results observed from scanning electron microscope (SEM) of lignin samples before and after biodegradation, and secondary-ion mass spectrometry (SIMS). Finally, the analysis of heteronuclear single quantum coherence (HSQC) NMR and gas chromatography-mass spectrometry (GC-MS) provided a comprehensive product mapping of the lignin biodegradation, suggesting that the lignin has undergone depolymerization of the macromolecules, side-chain cleavage, and aromatic ring-opening reactions. CONCLUSIONS Our results revealed a considerable escalation on the enzymatic activity obtained in a short period from the cultivation of the L. betulina or T. versicolor due to the enhanced microbial synergistic effects, providing a potential bioconversion route for lignin utilization.
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Affiliation(s)
- Tangwu Cui
- School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an, 710049 China
| | - Bo Yuan
- School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an, 710049 China
| | - Haiwei Guo
- CAS Key Laboratory of Science and Technology On Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023 People’s Republic of China
| | - Hua Tian
- Department of Chemistry, Pennsylvania State University, 215 Chemistry Bldg., University Park, PA 16802 USA
| | - Weimin Wang
- School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an, 710049 China
| | - Yingqun Ma
- School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an, 710049 China
| | - Changzhi Li
- CAS Key Laboratory of Science and Technology On Applied Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, 457 Zhongshan Road, Dalian, 116023 People’s Republic of China
| | - Qiang Fei
- School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an, 710049 China
- Shaanxi Key Laboratory of Energy Chemical Process Intensification, Xi’an Jiaotong University, Xi’an, 710049 People’s Republic of China
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Weng C, Peng X, Han Y. Depolymerization and conversion of lignin to value-added bioproducts by microbial and enzymatic catalysis. BIOTECHNOLOGY FOR BIOFUELS 2021; 14:84. [PMID: 33812391 PMCID: PMC8019502 DOI: 10.1186/s13068-021-01934-w] [Citation(s) in RCA: 60] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2021] [Accepted: 03/19/2021] [Indexed: 05/23/2023]
Abstract
Lignin, the most abundant renewable aromatic compound in nature, is an excellent feedstock for value-added bioproducts manufacturing; while the intrinsic heterogeneity and recalcitrance of which hindered the efficient lignin biorefinery and utilization. Compared with chemical processing, bioprocessing with microbial and enzymatic catalysis is a clean and efficient method for lignin depolymerization and conversion. Generally, lignin bioprocessing involves lignin decomposition to lignin-based aromatics via extracellular microbial enzymes and further converted to value-added bioproducts through microbial metabolism. In the review, the most recent advances in degradation and conversion of lignin to value-added bioproducts catalyzed by microbes and enzymes were summarized. The lignin-degrading microorganisms of white-rot fungi, brown-rot fungi, soft-rot fungi, and bacteria under aerobic and anaerobic conditions were comparatively analyzed. The catalytic metabolism of the microbial lignin-degrading enzymes of laccase, lignin peroxidase, manganese peroxidase, biphenyl bond cleavage enzyme, versatile peroxidase, and β-etherize was discussed. The microbial metabolic process of H-lignin, G-lignin, S-lignin based derivatives, protocatechuic acid, and catechol was reviewed. Lignin was depolymerized to lignin-derived aromatic compounds by the secreted enzymes of fungi and bacteria, and the aromatics were converted to value-added compounds through microbial catalysis and metabolic engineering. The review also proposes new insights for future work to overcome the recalcitrance of lignin and convert it to value-added bioproducts by microbial and enzymatic catalysis.
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Affiliation(s)
- Caihong Weng
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Xiaowei Peng
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yejun Han
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, China.
- School of Chemical Engineering, University of Chinese Academy of Sciences, Beijing, 100049, China.
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21
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Xiao J, Zhang S, Chen G. Mechanisms of Lignin-Degrading Enzymes. Protein Pept Lett 2021; 27:574-581. [PMID: 31868142 DOI: 10.2174/0929866527666191223141756] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Revised: 11/09/2019] [Accepted: 11/12/2019] [Indexed: 11/22/2022]
Abstract
Lignin is abundant in nature. It is a potentially valuable bioresource, but, because of its complex structure, it is difficult to degrade. However, enzymatic degradation of lignin is effective. Major lignin-degrading enzymes include laccases, lignin peroxidases, and manganese peroxidases. In this paper, the mechanisms of degradation of lignin by these three enzymes is reviewed, and synergy between them is discussed.
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Affiliation(s)
- Jianlong Xiao
- College of Life Sciences, Jilin Agricultural University, ChangChun, China
| | - Sitong Zhang
- College of Life Sciences, Jilin Agricultural University, ChangChun, China
| | - Guang Chen
- College of Life Sciences, Jilin Agricultural University, ChangChun, China
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22
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Wu J, Choi J, Asiegbu FO, Lee YH. Comparative Genomics Platform and Phylogenetic Analysis of Fungal Laccases and Multi-Copper Oxidases. MYCOBIOLOGY 2020; 48:373-382. [PMID: 33177916 PMCID: PMC7594830 DOI: 10.1080/12298093.2020.1816151] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 08/06/2020] [Accepted: 08/24/2020] [Indexed: 06/11/2023]
Abstract
Laccases (EC 1.10.3.2), a group of multi-copper oxidases (MCOs), play multiple biological functions and widely exist in many species. Fungal laccases have been extensively studied for their industrial applications, however, there was no database specially focused on fungal laccases. To provide a comparative genomics platform for fungal laccases, we have developed a comparative genomics platform for laccases and MCOs (http://laccase.riceblast.snu.ac.kr/). Based on protein domain profiles of characterized sequences, 3,571 laccases were predicted from 690 genomes including 253 fungi. The number of putative laccases and their properties exhibited dynamic distribution across the taxonomy. A total of 505 laccases from 68 genomes were selected and subjected to phylogenetic analysis. As a result, four clades comprised of nine subclades were phylogenetically grouped by their putative functions and analyzed at the sequence level. Our work would provide a workbench for putative laccases mainly focused on the fungal kingdom as well as a new perspective in the identification and classification of putative laccases and MCOs.
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Affiliation(s)
- Jiayao Wu
- Department of Forest Sciences, University of Helsinki, Helsinki, Finland
| | - Jaeyoung Choi
- Smart Farm Research Center, Korea Institute of Science and Technology, Gangneung, Republic of Korea
| | - Fred O. Asiegbu
- Department of Forest Sciences, University of Helsinki, Helsinki, Finland
| | - Yong-Hwan Lee
- Department of Agricultural Biotechnology, Center for Fungal Genetic Resources, Plant Immunity Research Center, and Research Institute of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea
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23
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Mei J, Shen X, Gang L, Xu H, Wu F, Sheng L. A novel lignin degradation bacteria-Bacillus amyloliquefaciens SL-7 used to degrade straw lignin efficiently. BIORESOURCE TECHNOLOGY 2020; 310:123445. [PMID: 32361649 DOI: 10.1016/j.biortech.2020.123445] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/22/2020] [Accepted: 04/23/2020] [Indexed: 06/11/2023]
Abstract
Using tobacco straw (Ts) and lignin as the sole carbon source, a strain was isolated from Ts and identified as Bacillus amyloliquefaciens SL-7 by 16S rDNA gene-sequencing technology.7-day incubation of Bacillus amyloliquefaciens SL-7 can reduce the chemical oxygen demand (COD) by 69.35% in lignin mineral salt medium. The activity of Manganese peroxidase (MnP) reached maximum level 258.57 U L-1, and Lignin peroxidase (Lip) was 422.68 U L-1 at 4th day. The highest Laccase (Lac) activity (55.95 U L-1) was observed at 3th day. After straw-liquid fermentation degradation of 15 days, the bacterial could degrade 28.55% lignin of the straw which was close to that of fungi. Compared with the control group and effective microorganisms (EM) group, the lignin degradation rate in Bacillus amyloliquefaciens SL-7 group increased by 22.26% and 11.70% at 41-day compost fermentation of tobacco straw. These show the strain has strong lignin degradation performance.
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Affiliation(s)
- Jinfei Mei
- Engineering Research Centre of Biomass Conversion and Pollution Prevention Control of Anhui Provincial Department of Education, Fuyang 236037, PR China; School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang 236037, PR China
| | - Xiaobao Shen
- Engineering Research Centre of Biomass Conversion and Pollution Prevention Control of Anhui Provincial Department of Education, Fuyang 236037, PR China
| | - Liping Gang
- Engineering Research Centre of Biomass Conversion and Pollution Prevention Control of Anhui Provincial Department of Education, Fuyang 236037, PR China
| | - Huajie Xu
- Engineering Research Centre of Biomass Conversion and Pollution Prevention Control of Anhui Provincial Department of Education, Fuyang 236037, PR China; School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang 236037, PR China
| | - Fufang Wu
- Engineering Research Centre of Biomass Conversion and Pollution Prevention Control of Anhui Provincial Department of Education, Fuyang 236037, PR China; School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang 236037, PR China
| | - Liangquan Sheng
- Engineering Research Centre of Biomass Conversion and Pollution Prevention Control of Anhui Provincial Department of Education, Fuyang 236037, PR China; School of Chemistry and Materials Engineering, Fuyang Normal University, Fuyang 236037, PR China.
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Min K, Park GW, Yoo YJ, Lee JS. A perspective on the biotechnological applications of the versatile tyrosinase. BIORESOURCE TECHNOLOGY 2019; 289:121730. [PMID: 31279520 DOI: 10.1016/j.biortech.2019.121730] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 06/26/2019] [Accepted: 06/28/2019] [Indexed: 06/09/2023]
Abstract
Tyrosinase (E.C. 1.14.18. 1) is a type of Cu-containing oxidoreductase which has bifunctional activity for various phenolic substrates: ortho-hydroxylation of monophenols to diphenols (a cresolase activity) and oxidation of diphenols to quinones (a catecholase activity). Based on the broad substrate spectrum, tyrosinase has been used in bioremediation of phenolic pollutants, constructing biosensors for identifying phenolic compounds, and L-DOPA synthesis. Furthermore, not only tyrosinase has been used to produce useful polyphenol derivatives, but also it is recently revealed that the promiscuous activity of tyrosinase is closely related with delignification in the biorefinery. Accordingly, tyrosinase might be a potential biocatalyst for industrial applications (e.g., electroenzymatic L-DOPA production, but its long-term stability and reusability should be further explored. In this review, we emphasize the versatility of tyrosinase, which includes conventional applications, and suggest new perspectives as an industrial biocatalyst (e.g., electroenzymatic L-DOPA production). Especially, this review focuses on and comprehensively discusses recent innovative studies.
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Affiliation(s)
- Kyoungseon Min
- Bio/Energy R&D Center, Korea Institute of Energy Research (KIER), Gwangju 61003, Republic of Korea
| | - Gwon Woo Park
- Bio/Energy R&D Center, Korea Institute of Energy Research (KIER), Gwangju 61003, Republic of Korea
| | - Young Je Yoo
- School of Chemical and Biological Engineering, Seoul National University, Seoul 08826, Republic of Korea
| | - Jin-Suk Lee
- Bio/Energy R&D Center, Korea Institute of Energy Research (KIER), Gwangju 61003, Republic of Korea.
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Sadeghian-Abadi S, Rezaei S, Yousefi-Mokri M, Faramarzi MA. Enhanced production, one-step affinity purification, and characterization of laccase from solid-state culture of Lentinus tigrinus and delignification of pistachio shell by free and immobilized enzyme. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 244:235-246. [PMID: 31125874 DOI: 10.1016/j.jenvman.2019.05.058] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 05/08/2019] [Accepted: 05/14/2019] [Indexed: 06/09/2023]
Abstract
Laccase mediated bio-delignification has shown promising results for the removal of lignin from bio-wastes and for providing a sustainable future for using of lignocellulosic materials in different industries. This study reports an extracellular laccase from Lentinus tigrinus with delignification capability. The production of laccase was enhanced through a solid-state fermentation on the pistachio shell bio-waste to 172.0 U mg-1 (8.2-fold) by one-factor-at-a-time optimizing of fermentation conditions. Laccase was purified using a new synthetic affinity resin yielding a specific activity of 543.6 U mg-1 and a 23.9-fold purification. The purified laccase was then immobilized covalently on the large pore magnetic SBA-15. Compared to free enzyme, immobilized enzyme maintained more stable at pH 2.0-11.0 and 25-55 °C, and against organic solvents, surfactants, metal ions, and inhibitors. The activity of both forms of the enzyme was increased with Cu2+, Ca+2, cetyltrimethylammonium bromide, and ethyl acetate. A 0.72 V redox potential caused enzyme specificity to various substrates. 80% of lignin content of the bio-waste was removed by 50 U mL-1 of immobilized enzyme after 8 h fermentation and delignification efficiency was greatly increased by applying higher enzyme dosages, surfactants, and organic solvents. In addition, residual activity was more than 50% after 20 cycles of delignification. The results of delignification were confirmed by GC-MS, SEM, and composition analysis of pistachio shells. This study illustrated the notable promise of the enzyme for biotechnological and environmental applications.
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Affiliation(s)
- Salar Sadeghian-Abadi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy and Biotechnology Research Center, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, 1417614411, Iran
| | - Shahla Rezaei
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy and Biotechnology Research Center, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, 1417614411, Iran
| | - Mahsa Yousefi-Mokri
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy and Biotechnology Research Center, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, 1417614411, Iran
| | - Mohammad Ali Faramarzi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy and Biotechnology Research Center, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran, 1417614411, Iran.
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Yasser M, Mousa A, Marzouk Marym A, Tagyan A. Molecular Identification, Extracellular Enzyme Production and Antimicrobial Activity of Endophytic Fungi Isolated from Solanum tuberosum L. in Egypt. ACTA ACUST UNITED AC 2019. [DOI: 10.13005/bbra/2731] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Solanum tuberosum L. possesses economic properties and can host endophytic mycoflora. A total of 19 endophytic fungi were identified via morphological and molecular methods. Among them, Trichoderma harzianum was the core-group fungus with a relative frequency of 36.7%. In the preliminary antimicrobial assay, all the test pathogens were inhibited by Alternaria tenuissima, Penicillium pinophilum and Penicillium rubens with a maximum inhibition zone of 26 mm and a minimum zone of 11 mm using agar-plug method. All the isolated endophytic fungi produced amylase, while cellulase and tyrosinase were recorded for most of the isolated species, whereas laccase and protease and manganese peroxidase were shown by a few taxa. None of the isolated fungi produced chitinase. This study revealed the biodiversity of endophytic fungi isolated from Solanum tuberosum that could be a promising source of bioactive compounds applied in many industries.
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Affiliation(s)
- M.M. Yasser
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Egypt
| | - A.S.M. Mousa
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Egypt
| | - A. Marzouk Marym
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Egypt
| | - A.I. Tagyan
- Botany and Microbiology Department, Faculty of Science, Beni-Suef University, Egypt
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Hu J, Guo H, Wang X, Gao MT, Yao G, Tsang YF, Li J, Yan J, Zhang S. Utilization of the saccharification residue of rice straw in the preparation of biochar is a novel strategy for reducing CO 2 emissions. THE SCIENCE OF THE TOTAL ENVIRONMENT 2019; 650:1141-1148. [PMID: 30308802 DOI: 10.1016/j.scitotenv.2018.09.099] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 08/21/2018] [Accepted: 09/08/2018] [Indexed: 06/08/2023]
Abstract
Once rice straw has been bioconverted into biofuels, it is difficult to further biodegrade or decompose the saccharification residue (mainly lignin). Taking into account the pyrolysis characteristics of lignin, in this study the saccharification residue was used as a raw material for the preparation of biochar (biochar-SR), a potential soil amendment. Biochar was prepared directly from rice straw (biochar-O) with a yield of 32.45 g/100 g rice straw, whereas 30.14 g biochar-SR and 30.46 g monosaccharides (including 20.46 g glucose, 9.11 g xylose, and 0.89 g arabinose) were obtained from 100 g of rice straw. When added to liquid soil extracts as a soil amendment, almost nothing was released from biochar-SR, whereas numerous dissolved solids (about 70 mg/L) were released from biochar-O. Adding a mixture of biochar-SR and autotrophic bacteria improved soil total organic carbon 1.8-fold and increased the transcription levels of cbbL and cbbM, which were 4.76 × 103 and 3.76 × 105 times those of the initial blank, respectively. By analyzing the soil microbial community, it was clear that the above mixture favored the growth of CO2-fixing bacteria such as Ochrobactrum. Compared with burning rice straw or preparing biochar-O, the preparation of biochar-SR reduced CO2 emissions by 67.53% or 37.13%, respectively. These results demonstrate that biochar-SR has potential applications in reducing the cost of sustainable energy and addressing environmental issues.
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Affiliation(s)
- Jiajun Hu
- Shanghai Key Laboratory of Bio-Energy Crops, School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Hongcheng Guo
- Shanghai Key Laboratory of Bio-Energy Crops, School of Life Sciences, Shanghai University, Shanghai 200444, China; Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Xiahui Wang
- Shanghai Key Laboratory of Bio-Energy Crops, School of Life Sciences, Shanghai University, Shanghai 200444, China
| | - Min-Tian Gao
- Shanghai Key Laboratory of Bio-Energy Crops, School of Life Sciences, Shanghai University, Shanghai 200444, China.
| | - Guodong Yao
- State Key Lab of Metal Matrix Composites, School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Yiu Fai Tsang
- Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong, China
| | - Jixiang Li
- Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
| | - Jianfang Yan
- Department of Science and Environmental Studies, The Education University of Hong Kong, Hong Kong, China; State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
| | - Saiwei Zhang
- State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China
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Guo H, Wang XD, Lee DJ. Proteomic researches for lignocellulose-degrading enzymes: A mini-review. BIORESOURCE TECHNOLOGY 2018; 265:532-541. [PMID: 29884341 DOI: 10.1016/j.biortech.2018.05.101] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/29/2018] [Accepted: 05/30/2018] [Indexed: 05/14/2023]
Abstract
Protective action of lignin/hemicellulose networks and crystalline structures of embedded cellulose render lignocellulose material resistant to external enzymatic attack. To eliminate this bottleneck, research has been conducted in which advanced proteomic techniques are applied to identify effective commercial hydrolytic enzymes. This mini-review summarizes researches on lignocellulose-degrading enzymes, the mechanisms of the responses of various lignocellulose-degrading strains and microbial communities to various carbon sources and various biomass substrates, post-translational modifications of lignocellulose-degrading enzymes, new lignocellulose-degrading strains, new lignocellulose-degrading enzymes and a new method of secretome analysis. The challenges in the practical use of enzymatic hydrolysis process to realize lignocellulose biorefineries are discussed, along with the prospects for the same.
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Affiliation(s)
- Hongliang Guo
- College of Food Engineering, Harbin University of Commerce, Harbin 150076, China
| | - Xiao-Dong Wang
- Research Center of Engineering Thermophysics, North China Electric Power University, Beijing 102206, China; School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
| | - Duu-Jong Lee
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan; Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan.
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Ćilerdžić J, Galić M, Ivanović Ž, Brčeski I, Vukojević J, Stajić M. Stimulation of Wood Degradation by Daedaleopsis confragosa and D. tricolor. Appl Biochem Biotechnol 2018; 187:1371-1383. [PMID: 30229433 DOI: 10.1007/s12010-018-2884-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2018] [Accepted: 09/09/2018] [Indexed: 11/25/2022]
Abstract
Biological pretreatment of the lignocellulosic residues, in which white-rot fungi have a crucial role, has many advantages compared to the chemical, physical, and physico-chemical methods of delignification and therefore attracts increasing scientific attention. Regarding the fact that properties and capacities of the ligninolytic enzymes of Daedaleopsis spp. are still unknown, the aim of this study was to research how nitrogen sources and inducers affect the potential of Daedaleopsis confragosa and Daedaleopsis tricolor to degrade cherry sawdust. NH4NO3, (NH4)2SO4, and peptone were tested as nitrogen sources, while veratryl alcohol, p-anisidine, vanillic acid, and phenylmethylsulfonyl fluoride were the studied inducers. As Mn-dependent peroxidase and laccase were the leader enzymes and cherry sawdust/peptone medium the best stimulator of their activities, the effect of inducers on delignification potential of these species was studied during fermentation of that substrate. Veratryl alcohol was the best stimulator of laccase and phenylmethylsulfonyl fluoride of Mn-dependent peroxidase activity (27,610.0 and 1338.4 U/L, respectively). These inducers also increased cherry sawdust delignification selectivity, particularly in D. tricolor in the presence of phenylmethylsulfonyl fluoride (lignin:hemicellulose:cellulose = 32.1%:0.9%:11.7%). Owing to the presented results, studied species could have an important role in the phase of lignocellulose pretreatment in various biotechnological processes.
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Affiliation(s)
- Jasmina Ćilerdžić
- Faculty of Biology, University of Belgrade, Takovska 43, Belgrade, 11000, Serbia.
| | - Milica Galić
- Faculty of Biology, University of Belgrade, Takovska 43, Belgrade, 11000, Serbia
| | - Žarko Ivanović
- Institute for Plant Protection and Environment, Teodora Drajzera 9, Belgrade, 11000, Serbia
| | - Ilija Brčeski
- Faculty of Chemistry, University of Belgrade, Studentski Trg 12-16, Belgrade, 11000, Serbia
| | - Jelena Vukojević
- Faculty of Biology, University of Belgrade, Takovska 43, Belgrade, 11000, Serbia
| | - Mirjana Stajić
- Faculty of Biology, University of Belgrade, Takovska 43, Belgrade, 11000, Serbia
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Fang X, Li Q, Lin Y, Lin X, Dai Y, Guo Z, Pan D. Screening of a microbial consortium for selective degradation of lignin from tree trimmings. BIORESOURCE TECHNOLOGY 2018; 254:247-255. [PMID: 29413930 DOI: 10.1016/j.biortech.2018.01.058] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2017] [Revised: 01/10/2018] [Accepted: 01/11/2018] [Indexed: 05/27/2023]
Abstract
To acquire microbial consortia with effectively precedent degradation of lignin, samples obtained from rotten trunks, rotten stumps and soil near it were screened and isolated after generations of subculture. The dynamic change illustrated that their community structures were affected by pH and tended to be stable after 6 days' cultivation. The desired one, named DM-1, was gained through successive cultivation for over 5 generations, whose high selectivity in lignin degradation was observed within 16 days' cultivation (SV = 2.78). Meanwhile, a remarkable reduction in the fiber crystallinity of tree trimmings (10.35%) resulted from the bio-degradation of DM-1, displayed a greater exposure of cellulose by selective removal of lignin. The diversity analysis of DM-1 was investigated by PCR amplification and 16S rDNA sequencing, indicated that mesorhizobium, cellulosimicrobium, pandoraea, achromobacter and stenotrophomones were the predominant genera. Furthermore, fungi (3 strains), bacteria (4 strains) and actinomycetes (5 strains) constituted 12 strains in total were gained by plate isolation from DM-1.
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Affiliation(s)
- Xiuxiu Fang
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Guangdong 510642, PR China
| | - Qiumin Li
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; School of Agriculture and Food Science, Belfield Campus, University College Dublin, Dublin 4, Ireland
| | - Yunqin Lin
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Guangdong 510642, PR China; Integrate Microbiology Research Center, South China Agricultural University, Guangzhou, Guangdong 510642, PR China.
| | - Xinlei Lin
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Guangdong 510642, PR China
| | - Yiqi Dai
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Guangdong 510642, PR China
| | - Zexiang Guo
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Guangdong 510642, PR China
| | - Dezhao Pan
- College of Natural Resources and Environment, South China Agricultural University, Guangzhou, Guangdong 510642, PR China
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Su Y, Yu X, Sun Y, Wang G, Chen H, Chen G. Evaluation of Screened Lignin-degrading Fungi for the Biological Pretreatment of Corn Stover. Sci Rep 2018; 8:5385. [PMID: 29599465 PMCID: PMC5876370 DOI: 10.1038/s41598-018-23626-6] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Accepted: 03/14/2018] [Indexed: 12/11/2022] Open
Abstract
The biological pretreatment of lignocellulosic biomass is a low-cost and eco-friendly method for facilitating enzymatic hydrolysis. In this study, strains with lignin depletion capability were screened using a high-throughput screening method. Sixty-three strains were screened out and Myrothecium verrucaria secreted three lignin-degrading enzymes simultaneously during the bio-pretreatment process. The activity levels of laccase, lignin peroxidase and manganese peroxidase were 6.61, 0.78 and 1.31 U g−1 dry biomass. The content of lignin in corn stover decreased by 42.30% after bio-pretreatment, and the conversion rate increased by 123.84% during the subsequent saccharification process in comparison with the untreated corn stover. Furthermore, the effects of bio-pretreatment on the structure of corn stover were presented using a scanning electron microscope (SEM), Brunauer-Emmet-Teller (BET), X-ray diffractometer (XRD) and Fourier transform infrared spectroscopy (FTIR). The results showed that M.V. is a promising lignin-degrading fungus. This research demonstrated an efficient pretreatment approach for enhancing the enzymatic saccharification of corn stover.
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Affiliation(s)
- Yingjie Su
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, P. R. China
| | - Xiaoxiao Yu
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, P. R. China
| | - Yang Sun
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, P. R. China
| | - Gang Wang
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, P. R. China
| | - Huan Chen
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, P. R. China
| | - Guang Chen
- College of Life Sciences, Jilin Agricultural University, Changchun, 130118, P. R. China.
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Bogdan VI, Sergeeva YE, Lunin VV, Perminova IV, Konstantinov AI, Zinchenko GE, Bogdan KV. Bioconversion of Phenolic Monomers of Lignin and Lignin-Containing Substrates by the Basidiomycete Lentinus tigrinus. APPL BIOCHEM MICRO+ 2018. [DOI: 10.1134/s0003683818020023] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Jović J, Buntić A, Radovanović N, Petrović B, Mojović L. Lignin-Degrading Abilities of Novel Autochthonous Fungal
Isolates Trametes hirsuta F13 and Stereum gausapatum F28. Food Technol Biotechnol 2018; 56:354-365. [PMID: 30510479 PMCID: PMC6233014 DOI: 10.17113/ftb.56.03.18.5348] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The aim of this research is to isolate and identify fungi with high lignin-degrading abilities that are autochthonous to southern Serbian region. Two novel fungal isolates identified as Trametes hirsuta F13 and Stereum gausapatum F28 were selected to assess their ligninolytic enzyme activities and the efficiency of lignin removal from beech wood sawdust. Obtained results show that both isolates are good sources of industrially valuable enzymes with a potential for application in various biotechnological and industrial processes. Both isolates showed laccase, manganese-dependent peroxidase, and versatile peroxidase activities, while only S. gausapatum F28 had lignin peroxidase activity. This is the first record of the ability of S. gausapatum species to produce lignin peroxidase. T. hirsuta F13 showed higher laccase activity than S. gausapatum F28, while S. gausapatum F28 had higher manganese peroxidase activity. Also, T. hirsuta F13 exhibited much higher laccase activity under submerged cultivation conditions than solid-state cultivation conditions, which is rare for fungi. This is important for industrial processes since the submerged fermentation is a dominant technique in industry. The test of the efficiency of lignin removal showed that both isolates are efficient lignin decomposers. After five weeks of incubation on beech wood sawdust, the total lignin losses were 33.84% with T. hirsuta F13 and 28.8% with S. gausapatum F28.
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Affiliation(s)
- Jelena Jović
- University of Belgrade, Faculty of Technology and Metallurgy, Department for Biochemical Engineering and Biotechnology, Karnegijeva 4, RS-11120 Belgrade, Serbia
| | - Aneta Buntić
- University of Belgrade, Faculty of Technology and Metallurgy, Department for Biochemical Engineering and Biotechnology, Karnegijeva 4, RS-11120 Belgrade, Serbia
| | - Neda Radovanović
- University of Belgrade, Faculty of Technology and Metallurgy, Department for Biochemical Engineering and Biotechnology, Karnegijeva 4, RS-11120 Belgrade, Serbia
| | - Bojan Petrović
- University of Belgrade, Faculty of Technology and Metallurgy, Department for Biochemical Engineering and Biotechnology, Karnegijeva 4, RS-11120 Belgrade, Serbia
| | - Ljiljana Mojović
- University of Belgrade, Faculty of Technology and Metallurgy, Department for Biochemical Engineering and Biotechnology, Karnegijeva 4, RS-11120 Belgrade, Serbia
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Ćilerdžić J, Galić M, Vukojević J, Brčeski I, Stajić M. Potential of selected fungal species to degrade wheat straw, the most abundant plant raw material in Europe. BMC PLANT BIOLOGY 2017; 17:249. [PMID: 29297329 PMCID: PMC5751771 DOI: 10.1186/s12870-017-1196-y] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
BACKGROUND Structural component of plant biomass, lignocellulose, is the most abundant renewable resource in nature. Lignin is the most recalcitrant natural aromatic polymer and its degradation presents great challenge. Nowadays, the special attention is given to biological delignification, the process where white-rot fungi take the crucial place owing to strong ligninolytic enzyme system. However, fungal species, even strains, differ in potential to produce high active ligninolytic enzymes and consequently to delignify plant biomass. Therefore, the goals of the study were characterization of Mn-oxidizing peroxidases and laccases of numerous mushrooms as well as determination of their potential to delignify wheat straw, the plant raw material that, according to annual yield, takes the first place in Europe and the second one in the world. RESULTS During wheat straw fermentation, Lentinus edodes HAI 858 produced the most active Mn-dependent and Mn-independent peroxidases (1443.2 U L-1 and 1045.5 U L-1, respectively), while Pleurotus eryngii HAI 711 was the best laccase producer (7804.3 U L-1). Visualized bends on zymogram confirmed these activities and demonstrated that laccases were the dominant ligninolytic enzymes in the studied species. Ganoderma lucidum BEOFB 435 showed considerable ability to degrade lignin (58.5%) and especially hemicellulose (74.8%), while the cellulose remained almost intact (0.7%). Remarkable selectivity in lignocellulose degradation was also noted in Pleurotus pulmonarius HAI 573 where degraded amounts of lignin, hemicellulose and cellulose were in ratio of 50.4%:15.3%:3.8%. CONCLUSIONS According to the presented results, it can be concluded that white-rot fungi, due to ligninolytic enzymes features and degradation potential, could be important participants in various biotechnological processes including biotransformation of lignocellulose residues/wastes in food, feed, paper and biofuels.
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Affiliation(s)
- Jasmina Ćilerdžić
- University of Belgrade, Faculty of Biology, Takovska 43, Belgrade, 11000, Serbia
| | - Milica Galić
- University of Belgrade, Faculty of Biology, Takovska 43, Belgrade, 11000, Serbia
| | - Jelena Vukojević
- University of Belgrade, Faculty of Biology, Takovska 43, Belgrade, 11000, Serbia
| | - Ilija Brčeski
- University of Belgrade, Faculty of Biology, Takovska 43, Belgrade, 11000, Serbia
| | - Mirjana Stajić
- University of Belgrade, Faculty of Biology, Takovska 43, Belgrade, 11000, Serbia.
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Ceballos SJ, Yu C, Claypool JT, Singer SW, Simmons BA, Thelen MP, Simmons CW, VanderGheynst JS. Development and characterization of a thermophilic, lignin degrading microbiota. Process Biochem 2017. [DOI: 10.1016/j.procbio.2017.08.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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37
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Wang QF, Niu LL, Jiao J, Guo N, Zang YP, Gai QY, Fu YJ. Degradation of lignin in birch sawdust treated by a novel Myrothecium verrucaria coupled with ultrasound assistance. BIORESOURCE TECHNOLOGY 2017; 244:969-974. [PMID: 28847088 DOI: 10.1016/j.biortech.2017.07.164] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 07/26/2017] [Accepted: 07/27/2017] [Indexed: 05/20/2023]
Abstract
Combined treatment of a novel fungal endophyte Myrothecium verrucaria coupled with ultrasound assistance was conducted to enhance lignin degradation in birch sawdust. The optimum treatment conditions were confirmed as the materials to liquid ratio 1:20, temperature 30°C, time 4days and pH 7, respectively. The results showed that the combined treatment led to the lignin degradation reaching 67.95±2.14%, while the lignin degradation were 45.50±2.12% and 13.75±0.66% with separate fungal treatment and ultrasound treatment, respectively. Moreover, SEM and FTIR analysis indicated that combined treatment significantly altered surface morphology and chemical structure of birch sawdust. The combined treatment greatly increased lignin removal during short time in mild environment. Therefore, these results demonstrated that the combined treatment of fungal endophyte coupled with ultrasound assistance has the high potential for the removal lignin in lignocellulose.
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Affiliation(s)
- Qing-Fang Wang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Li-Li Niu
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Jiao Jiao
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Na Guo
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Yu-Ping Zang
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Qing-Yan Gai
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China
| | - Yu-Jie Fu
- Key Laboratory of Forest Plant Ecology, Ministry of Education, Northeast Forestry University, Harbin 150040, PR China; Advanced Innovation Center for Tree Breeding by Molecular Design, Beijing Forestry University, Beijing 100083, PR China.
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Delignification and detoxification of peanut shell bio-waste using an extremely halophilic laccase from an Aquisalibacillus elongatus isolate. Extremophiles 2017; 21:993-1004. [PMID: 28871494 DOI: 10.1007/s00792-017-0958-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2017] [Accepted: 08/21/2017] [Indexed: 10/18/2022]
Abstract
Lignocellulose bioconversion is a harsh process requiring the use of surfactants and organic solvents. Consequently, the incorporation of laccases in this bioconversion requires the bioprospecting of enzymes that can remain stable under extreme conditions. An extracellular, highly stable laccase was produced by the halophilic isolate Aquisalibacillus elongatus in submerged liquid culture fermentation. Statistical and non-statistical strategies gave the highest enzymatic activity (8.02 U mL-1) following addition of glucose (1.7 g L-1), copper sulfate (0.8 g L-1), urea (15 g L-1), and CaCl2 (0.8 g L-1). The enzyme, after purification using a synthetic affinity support, delignified a peanut shell substrate by 45%. A pH of 8.0 and a temperature of 35 °C were optimal for delignification of this bio-waste material. Addition of [Bmim][PF6], 1,4-dioxane, acetone, and HBT promoted this bio-waste delignification. Bio-treatment in the presence of 50% [Bmim][PF6] gave a maximal lignin removal of 87%. The surfactants tested had no significant effects on the delignification yield. The laccase also detoxified the toxic phenols found in peanut shell waste. The high catalytic efficiency of this enzyme against a lignocellulosic sample under extreme conditions suggests the suitability of this laccase for industrial applications.
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A simple and efficient method for successful gene silencing of HspA1 in Trametes hirsuta AH28-2. Antonie van Leeuwenhoek 2017; 110:1527-1535. [DOI: 10.1007/s10482-017-0904-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Accepted: 06/27/2017] [Indexed: 01/13/2023]
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Marques RG, Ferrari-Lima AM, Slusarski-Santana V, Fernandes-Machado NRC. Ag 2O and Fe 2O 3 modified oxides on the photocatalytic treatment of pulp and paper wastewater. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 195:242-248. [PMID: 27652582 DOI: 10.1016/j.jenvman.2016.08.034] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Revised: 07/30/2016] [Accepted: 08/10/2016] [Indexed: 05/24/2023]
Abstract
The effects of doping of ZnO and Nb2O5 solids with Fe2O3 (1.4 wt%) and Ag2O (1.4 wt%) on its surface and catalytic properties were investigated, as well as its photocatalytic performance on the degradation of a pulp and paper wastewater (PPW). The catalysts were characterized by XRD, SEM, photoacoustic spectroscopy (PAS), NH3-TPD and textural analysis. The results obtained revealed that Fe2O3 doping of Nb2O5 conducted at 500 °C resulted in an increase of about 116% for SBET while Ag2O treatment exerted a decrease of 33% for SBET of the doped adsorbents. Doping ZnO with Fe2O3 or Ag2O led to an increase of 80% for SBET. Iron and silver doping also led to a decrease in band gap energy of at least 6%. The addition of 1.4 wt% Ag2O on ZnO followed by calcination at 500 °C resulted in an increase of 11% in the value of the reaction rate constant (kap) for COD reduction under UV radiation. The treatment of Nb2O5 with 1.4 wt% Ag2O increased by a factor of 2.04 the value of kap for the reaction taking place under VIS radiation. The catalysts partially reduced the organic load and the real colour of the wastewater, allowing the achievement of the specifications for release into rivers, so photocatalysis could be an alternative for pulp and paper wastewater final polishing.
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Affiliation(s)
- R G Marques
- Universidade Estadual de Maringá, Av. Colombo, 5790, Maringá, PR, Brazil
| | - A M Ferrari-Lima
- Universidade Tecnológica Federal do Paraná, Rua Marcílio Dias, 635, Apucarana, PR, Brazil.
| | - V Slusarski-Santana
- Universidade Estadual do Oeste do Paraná, Rua da Faculdade, 645, Toledo, PR, Brazil
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Akpinar M, Ozturk Urek R. Induction of fungal laccase production under solid state bioprocessing of new agroindustrial waste and its application on dye decolorization. 3 Biotech 2017; 7:98. [PMID: 28560638 DOI: 10.1007/s13205-017-0742-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Accepted: 02/07/2017] [Indexed: 01/30/2023] Open
Abstract
Lignocellulosic wastes are generally produced in huge amounts worldwide. Peach waste of these obtained from fruit juice industry was utilized as the substrate for laccase production by Pleurotus eryngii under solid state bioprocessing (SSB). Its chemical composition was determined and this bioprocess was carried out under stationary conditions at 28 °C. The effects of different compounds; copper, iron, Tween 80, ammonium nitrate and manganese, and their variable concentrations on laccase production were investigated in detail. The optimum production of laccase (43,761.33 ± 3845 U L-1) was achieved on the day of 20 by employing peach waste of 5.0 g and 70 µM Cu2+, 18 µM Fe2+, 0.025% (v/v) Tween 80, 4.0 g L-1 ammonium nitrate, 750 µM Mn2+ as the inducers. The dye decolorization also researched to determine the degrading capability of laccase produced from peach culture under the above-mentioned conditions. Within this scope of the study, methyl orange, tartrazine, reactive red 2 and reactive black dyes were treated with this enzyme. The highest decolorization was performed with methyl orange as 43 ± 2.8% after 5 min of treatment when compared to other dyes. Up to now, this is the first report on the induction of laccase production by P. eryngii under SSB using peach waste as the substrate.
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Affiliation(s)
- Merve Akpinar
- Chemistry Department, Graduate School of Natural and Applied Sciences, Dokuz Eylül University, 35160, Buca-Izmir, Turkey
| | - Raziye Ozturk Urek
- Biochemistry Division, Chemistry Department, Faculty of Science, Dokuz Eylül University, 35160, Buca-Izmir, Turkey.
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Rezaei S, Shahverdi AR, Faramarzi MA. Isolation, one-step affinity purification, and characterization of a polyextremotolerant laccase from the halophilic bacterium Aquisalibacillus elongatus and its application in the delignification of sugar beet pulp. BIORESOURCE TECHNOLOGY 2017; 230:67-75. [PMID: 28161622 DOI: 10.1016/j.biortech.2017.01.036] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2016] [Revised: 01/14/2017] [Accepted: 01/19/2017] [Indexed: 06/06/2023]
Abstract
The aim of the present work was to study the ability of a halophilic bacterial laccase to efficient delignification in extreme conditions. Here, a highly stable extracellular laccase showing ligninolytic activity from halophilic Aquisalibacillus elongatus is described. The laccase production was strongly influenced by NaCl and CuSO4 and under optimal conditions reached 4.8UmL-1. The monomeric enzyme of 75kDa was purified by a synthetic affinity column with 68.2% yield and 99.8-fold purification. The enzyme showed some valuable features viz. stability against a wide range of organic solvents, salts, metals, inhibitors, and surfactants and specificity to a wide spectrum of substrates diverse in structure and redox potential. It retained more than 50% of the original activity at 25-75°C and pH 5.0-10.0. Furthermore, the enzyme was found to be effective in the delignification of sugar beet pulp in an ionic liquid that makes it useful for industrial applications.
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Affiliation(s)
- Shahla Rezaei
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy and Biotechnology Research Center, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran 1417614411, Iran
| | - Ahmad Reza Shahverdi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy and Biotechnology Research Center, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran 1417614411, Iran
| | - Mohammad Ali Faramarzi
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy and Biotechnology Research Center, Tehran University of Medical Sciences, P.O. Box 14155-6451, Tehran 1417614411, Iran.
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Asgher M, Ahmad Z, Iqbal HMN. Bacterial cellulose-assisted de-lignified wheat straw-PVA based bio-composites with novel characteristics. Carbohydr Polym 2017; 161:244-252. [PMID: 28189235 DOI: 10.1016/j.carbpol.2017.01.032] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 01/01/2017] [Accepted: 01/06/2017] [Indexed: 02/08/2023]
Abstract
In the present study, in-house extracted ligninolytic consortium was used as a green catalyst to modify the pristine wheat straw through de-lignification. The ligninolytic consortium showed an enhanced level of de-lignification with a maximal cellulose exposure from 24% to 76.54% cellulose. The de-lignified wheat straw was further strengthened using bacterial cellulose integration. Subsequently, a well-known compression molding technique was used to develop bio-composites from a de-lignified and bacterially modified wheat straw in the presence of polyvinyl alcohol (PVA) and glycerol as a plasticizer. The newly developed bio-composites were characterized using a variety of analytical and imaging techniques including Fourier Transform Infra-Red Spectroscopy (FT-IR) and Scanning Electron Microscopy (SEM). Evidently, the characterization profile revealed a considerable improvement in the morphology, mechanical and water uptake features of the newly developed bio-composites. In summary, the improved characteristics of bacterial cellulose-assisted de-lignified wheat straw-PVA based bio-composites suggest a high potential of enzymatic treatment for biotechnological exploitability.
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Affiliation(s)
- Muhammad Asgher
- Industrial Biotechnology Laboratory, Department of Biochemistry, University of Agriculture Faisalabad, Pakistan
| | - Zanib Ahmad
- Industrial Biotechnology Laboratory, Department of Biochemistry, University of Agriculture Faisalabad, Pakistan
| | - Hafiz M N Iqbal
- School of Engineering and Science, Tecnologico de Monterrey, Campus Monterrey, Ave. Eugenio Garza Sada 2501, Monterrey, N. L. CP 64849, Mexico.
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Color reduction of sulfonated eucalyptus kraft lignin. Int J Biol Macromol 2017; 97:201-208. [DOI: 10.1016/j.ijbiomac.2017.01.031] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 01/03/2017] [Accepted: 01/07/2017] [Indexed: 11/22/2022]
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Sana B, Chia KHB, Raghavan SS, Ramalingam B, Nagarajan N, Seayad J, Ghadessy FJ. Development of a genetically programed vanillin-sensing bacterium for high-throughput screening of lignin-degrading enzyme libraries. BIOTECHNOLOGY FOR BIOFUELS 2017; 10:32. [PMID: 28174601 PMCID: PMC5291986 DOI: 10.1186/s13068-017-0720-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2016] [Accepted: 01/28/2017] [Indexed: 05/06/2023]
Abstract
BACKGROUND Lignin is a potential biorefinery feedstock for the production of value-added chemicals including vanillin. A huge amount of lignin is produced as a by-product of the paper industry, while cellulosic components of plant biomass are utilized for the production of paper pulp. In spite of vast potential, lignin remains the least exploited component of plant biomass due to its extremely complex and heterogenous structure. Several enzymes have been reported to have lignin-degrading properties and could be potentially used in lignin biorefining if their catalytic properties could be improved by enzyme engineering. The much needed improvement of lignin-degrading enzymes by high-throughput selection techniques such as directed evolution is currently limited, as robust methods for detecting the conversion of lignin to desired small molecules are not available. RESULTS We identified a vanillin-inducible promoter by RNAseq analysis of Escherichia coli cells treated with a sublethal dose of vanillin and developed a genetically programmed vanillin-sensing cell by placing the 'very green fluorescent protein' gene under the control of this promoter. Fluorescence of the biosensing cell is enhanced significantly when grown in the presence of vanillin and is readily visualized by fluorescence microscopy. The use of fluorescence-activated cell sorting analysis further enhances the sensitivity, enabling dose-dependent detection of as low as 200 µM vanillin. The biosensor is highly specific to vanillin and no major response is elicited by the presence of lignin, lignin model compound, DMSO, vanillin analogues or non-specific toxic chemicals. CONCLUSIONS We developed an engineered E. coli cell that can detect vanillin at a concentration as low as 200 µM. The vanillin-sensing cell did not show cross-reactivity towards lignin or major lignin degradation products including vanillin analogues. This engineered E. coli cell could potentially be used as a host cell for screening lignin-degrading enzymes that can convert lignin to vanillin.
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Affiliation(s)
- Barindra Sana
- p53 Laboratory, Agency for Science Technology And Research (A*STAR), 8A Biomedical Grove, #06-04/05 Neuros/Immunos, Singapore, 138648 Singapore
| | - Kuan Hui Burton Chia
- Genome Institute of Singapore, 60 Biopolis Street, Genome, #02-01, Singapore, 138672 Singapore
| | - Sarada S. Raghavan
- p53 Laboratory, Agency for Science Technology And Research (A*STAR), 8A Biomedical Grove, #06-04/05 Neuros/Immunos, Singapore, 138648 Singapore
| | - Balamurugan Ramalingam
- Institute of Chemical and Engineering Sciences, 8 Biomedical Grove, Neuros, #07-01, Singapore, 138665 Singapore
| | - Niranjan Nagarajan
- Genome Institute of Singapore, 60 Biopolis Street, Genome, #02-01, Singapore, 138672 Singapore
| | - Jayasree Seayad
- Institute of Chemical and Engineering Sciences, 8 Biomedical Grove, Neuros, #07-01, Singapore, 138665 Singapore
| | - Farid J. Ghadessy
- p53 Laboratory, Agency for Science Technology And Research (A*STAR), 8A Biomedical Grove, #06-04/05 Neuros/Immunos, Singapore, 138648 Singapore
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Casciello C, Tonin F, Berini F, Fasoli E, Marinelli F, Pollegioni L, Rosini E. A valuable peroxidase activity from the novel species Nonomuraea gerenzanensis growing on alkali lignin. ACTA ACUST UNITED AC 2017; 13:49-57. [PMID: 28352563 PMCID: PMC5361131 DOI: 10.1016/j.btre.2016.12.005] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Revised: 12/07/2016] [Accepted: 12/21/2016] [Indexed: 11/22/2022]
Abstract
Actinomycetes represent an attractive source of ligninolytic enzymes. 43 actinomycetes were screened for laccase and peroxidase activities. The novel species N. gerenzanensis produces a valuable bacterial peroxidase activity. The dye-decolorizing activity paves the way for an industrial use of this peroxidase.
Degradation of lignin constitutes a key step in processing biomass to become useful monomers but it remains challenging. Compared to fungi, bacteria are much less characterized with respect to their lignin metabolism, although it is reported that many soil bacteria, especially actinomycetes, attack and solubilize lignin. In this work, we screened 43 filamentous actinomycetes by assaying their activity on chemically different substrates including a soluble and semi-degraded lignin derivative (known as alkali lignin or Kraft lignin), and we discovered a novel and valuable peroxidase activity produced by the recently classified actinomycete Nonomuraea gerenzanensis. Compared to known fungal manganese and versatile peroxidases, the stability of N. gerenzanensis peroxidase activity at alkaline pHs and its thermostability are significantly higher. From a kinetic point of view, N. gerenzanensis peroxidase activity shows a Km for H2O2 similar to that of Phanerochaete chrysosporium and Bjerkandera enzymes and a lower affinity for Mn2+, whereas it differs from the six Pleurotus ostreatus manganese peroxidase isoenzymes described in the literature. Additionally, N. gerenzanensis peroxidase shows a remarkable dye-decolorizing activity that expands its substrate range and paves the way for an industrial use of this enzyme. These results confirm that by exploring new bacterial diversity, we may be able to discover and exploit alternative biological tools putatively involved in lignin modification and degradation.
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Key Words
- 2,4-DCP, 2,4-dichlorophenol
- 2,6-DMP, 2,6-dimethoxyphenol
- ABTS, 2,2’-azino-bis(3-ethylbenzothiazoline-6-sulphonic acid)
- Alkali lignin
- DyP, dye decolorizing peroxidase
- Filamentous actinomycetes
- Kraft lignin
- LiP, lignin peroxidase
- MAM, mannitol agar medium
- MM-L, minimal salt medium plus lignin
- MnP, manganese peroxidase
- Nonomuraea gerenzanensis
- Peroxidases
- RB5, reactive black 5
- RBBR, remazol brilliant blue R
- VP, versatile peroxidase
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Affiliation(s)
- Carmine Casciello
- Department of Biotechnology and Life Sciences, University of Insubria, via J.H. Dunant 3, 21100 Varese, Italy; The Protein Factory Research Center, Politecnico of Milano and University of Insubria, via Mancinelli 7, 20131 Milano, Italy
| | - Fabio Tonin
- Department of Biotechnology and Life Sciences, University of Insubria, via J.H. Dunant 3, 21100 Varese, Italy; The Protein Factory Research Center, Politecnico of Milano and University of Insubria, via Mancinelli 7, 20131 Milano, Italy
| | - Francesca Berini
- Department of Biotechnology and Life Sciences, University of Insubria, via J.H. Dunant 3, 21100 Varese, Italy; The Protein Factory Research Center, Politecnico of Milano and University of Insubria, via Mancinelli 7, 20131 Milano, Italy
| | - Elisa Fasoli
- Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico of Milano, via Mancinelli 7, 20131, Milano, Italy
| | - Flavia Marinelli
- Department of Biotechnology and Life Sciences, University of Insubria, via J.H. Dunant 3, 21100 Varese, Italy; The Protein Factory Research Center, Politecnico of Milano and University of Insubria, via Mancinelli 7, 20131 Milano, Italy
| | - Loredano Pollegioni
- Department of Biotechnology and Life Sciences, University of Insubria, via J.H. Dunant 3, 21100 Varese, Italy; The Protein Factory Research Center, Politecnico of Milano and University of Insubria, via Mancinelli 7, 20131 Milano, Italy
| | - Elena Rosini
- Department of Biotechnology and Life Sciences, University of Insubria, via J.H. Dunant 3, 21100 Varese, Italy; The Protein Factory Research Center, Politecnico of Milano and University of Insubria, via Mancinelli 7, 20131 Milano, Italy
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Zhu D, Zhang P, Xie C, Zhang W, Sun J, Qian WJ, Yang B. Biodegradation of alkaline lignin by Bacillus ligniniphilus L1. BIOTECHNOLOGY FOR BIOFUELS 2017; 10:44. [PMID: 28239416 PMCID: PMC5320714 DOI: 10.1186/s13068-017-0735-y] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Accepted: 02/14/2017] [Indexed: 05/07/2023]
Abstract
BACKGROUND Lignin is the most abundant aromatic biopolymer in the biosphere and it comprises up to 30% of plant biomass. Although lignin is the most recalcitrant component of the plant cell wall, still there are microorganisms able to decompose it or degrade it. Fungi are recognized as the most widely used microbes for lignin degradation. However, bacteria have also been known to be able to utilize lignin as a carbon or energy source. Bacillus ligniniphilus L1 was selected in this study due to its capability to utilize alkaline lignin as a single carbon or energy source and its excellent ability to survive in extreme environments. RESULTS To investigate the aromatic metabolites of strain L1 decomposing alkaline lignin, GC-MS analysis was performed and fifteen single phenol ring aromatic compounds were identified. The dominant absorption peak included phenylacetic acid, 4-hydroxy-benzoicacid, and vanillic acid with the highest proportion of metabolites resulting in 42%. Comparison proteomic analysis was carried out for further study showed that approximately 1447 kinds of proteins were produced, 141 of which were at least twofold up-regulated with alkaline lignin as the single carbon source. The up-regulated proteins contents different categories in the biological functions of protein including lignin degradation, ABC transport system, environmental response factors, protein synthesis, assembly, etc. CONCLUSIONS GC-MS analysis showed that alkaline lignin degradation of strain L1 produced 15 kinds of aromatic compounds. Comparison proteomic data and metabolic analysis showed that to ensure the degradation of lignin and growth of strain L1, multiple aspects of cells metabolism including transporter, environmental response factors, and protein synthesis were enhanced. Based on genome and proteomic analysis, at least four kinds of lignin degradation pathway might be present in strain L1, including a Gentisate pathway, the benzoic acid pathway and the β-ketoadipate pathway. The study provides an important basis for lignin degradation by bacteria.
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Affiliation(s)
- Daochen Zhu
- School of Environment and safty Engineering, Jiangsu University, Zhenjiang, Jiangsu China
- State Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou, Guangdong China
| | - Peipei Zhang
- School of Environment and safty Engineering, Jiangsu University, Zhenjiang, Jiangsu China
| | - Changxiao Xie
- School of Environment and safty Engineering, Jiangsu University, Zhenjiang, Jiangsu China
| | - Weimin Zhang
- State Key Laboratory of Microbial Culture Collection and Application, Guangdong Institute of Microbiology, Guangzhou, Guangdong China
| | - Jianzhong Sun
- School of Environment and safty Engineering, Jiangsu University, Zhenjiang, Jiangsu China
| | - Wei-Jun Qian
- Biological Sciences Division and Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99352 USA
| | - Bin Yang
- Bioproducts, Sciences and Engineering Laboratory, Department of Biological Systems Engineering, Washington State University, Richland, WA 99354 USA
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Stajić M, Vukojević J, Milovanović I, Ćilerdžić J, Knežević A. Role of Mushroom Mn-Oxidizing Peroxidases in Biomass Conversion. ACTA ACUST UNITED AC 2016. [DOI: 10.1007/978-3-319-43679-1_10] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/28/2023]
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Knežević A, Stajić M, Jovanović VM, Kovačević V, Ćilerdžić J, Milovanović I, Vukojević J. Induction of wheat straw delignification by Trametes species. Sci Rep 2016; 6:26529. [PMID: 27216645 PMCID: PMC4877921 DOI: 10.1038/srep26529] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Accepted: 04/28/2016] [Indexed: 01/26/2023] Open
Abstract
Wheat straw is the major crop residue in European countries which makes it the most promising material for bioconversion into biofuels. However, cellulose and hemicellulose are protected with lignin, so delignification is an inevitable phase in lignocellulose processing. The organisms predominantly responsible for its degradation are white-rot fungi and among them Trametes species represent promising degraders due to a well-developed ligninolytic enzyme system. Although numerous studies have confirmed that low molecular weight compounds can induce the production and activity of ligninolytic enzymes it is not clear how this reflects on the extent of delignification. The aim of the study was to assess the capacity of p-anisidine and veratryl alcohol to induce the production and activity of Mn-oxidizing peroxidases and laccases, and wheat straw delignification by six Trametes species. Significant inter- and intraspecific variations in activity and features of these enzymes were found, as well as differences in the potential of lignocellulose degradation in the presence or absence of inducers. Differences in the catalytic properties of synthesized enzyme isoforms strongly affected lignin degradation. Apart from enhanced lignin degradation, the addition of p-anisidine could significantly improve the selectivity of wheat straw ligninolysis, which was especially evident for T. hirsuta strains.
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Affiliation(s)
- Aleksandar Knežević
- University of Belgrade, Faculty of Biology, Takovska 43, 11000 Belgrade, Serbia
| | - Mirjana Stajić
- University of Belgrade, Faculty of Biology, Takovska 43, 11000 Belgrade, Serbia
| | - Vladimir M. Jovanović
- University of Belgrade, Institute for Biological Research “Siniša Stanković” Bulevar Despota Stefana 142, 11060 Belgrade, Serbia
| | - Višnja Kovačević
- University of Belgrade, Faculty of Biology, Takovska 43, 11000 Belgrade, Serbia
| | - Jasmina Ćilerdžić
- University of Belgrade, Faculty of Biology, Takovska 43, 11000 Belgrade, Serbia
| | - Ivan Milovanović
- University of Belgrade, Faculty of Biology, Takovska 43, 11000 Belgrade, Serbia
| | - Jelena Vukojević
- University of Belgrade, Faculty of Biology, Takovska 43, 11000 Belgrade, Serbia
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Asgher M, Wahab A, Bilal M, Nasir Iqbal HM. Lignocellulose degradation and production of lignin modifying enzymes by Schizophyllum commune IBL-06 in solid-state fermentation. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2016. [DOI: 10.1016/j.bcab.2016.04.003] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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