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Ding B, Yue Y, Chen X, Long X, Zhou Z. Identification and expression analysis of miR396 and its target genes in Jerusalem artichoke under temperature stress. Gene 2024; 893:147908. [PMID: 37858744 DOI: 10.1016/j.gene.2023.147908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Revised: 09/25/2023] [Accepted: 10/16/2023] [Indexed: 10/21/2023]
Abstract
The highly conserved miR396 plays a pivotal role in the growth, development, and responses to abiotic and biotic stresses in plants. However, research on miR396 and its targets in Jerusalem artichoke remains largely unexplored. In this study, we employed bioinformatics and experimental techniques, such as cloning and qRT-PCR, to investigate the regulatory role of miR396 on its targets, leveraging our lab's transcriptomic and degradomic data of Jerusalem artichoke. Specifically, we initially cloned and characterized the precursors (htu-MIR396a/b/c) and mature sequences (htu-miR396a/b/c) of three miR396 isoforms. Subsequently, we identified nine target genes, including seven Growth-Regulating Factors (GRFs) (HtGRF3/4/6/9/10/12/13), one WRKY transcription factor (HtWRKY40), and one Scarecrow-like (SCL) transcription factor (HtSCL33). Finally, we conducted an analysis of their expression patterns across various tissues and their responses to temperature stress. Notably, htu-MIR396s exhibited high expression in seedling stems, while htu-miR396s predominantly expressed in seedling leaves. Moreover, HtWRKY40 and HtSCL33 displayed higher expression levels than HtGRFs in most tissues, except leaves. Remarkably, HtGRF4/6/10/12/13 exhibited higher expression in leaves than in roots and stems during seedling growth. Furthermore, during tuber development, HtGRF4/6/10, HtWRKY40, and HtSCL33 were highly expressed, while HtGRF3/9/12/13 showed relatively lower expression levels. Under heat stress (42℃), htu-MIR396 expression was up-regulated, and htu-miR396 showed dynamic expression patterns in seedlings, resulting in the induction of HtGRF4/6/10/12/13 in leaves and HtSCL33 in roots, while HtWRKY40 in leaves was repressed. Conversely, under cold stress (4℃), htu-MIR396s showed fluctuating expression levels, and htu-miR396s were up-regulated in seedlings. Notably, HtGRF4/13 and HtSCL33 in seedlings were reduced, whereas HtGRF6 in roots and HtWRKY40 in leaves were enhanced. These findings offer valuable insights into the functional roles of miR396-target interactions under abiotic stress in Jerusalem artichoke.
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Affiliation(s)
- Baishui Ding
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Yang Yue
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Xi Chen
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Xiaohua Long
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhaosheng Zhou
- College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China.
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2
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Xiong J, Lu X, Li W, Yang S, Zhang R, Li X, Han J, Li D, Yu Z. One-Pot Tandem Transformation of Inulin as Fructose-Rich Platform Towards 5-Hydroxymethylfurfural: Feedstock Advantages, Acid-Site Regulation and Solvent Effects. CHEMSUSCHEM 2023; 16:e202201936. [PMID: 36545829 DOI: 10.1002/cssc.202201936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 12/21/2022] [Indexed: 06/17/2023]
Abstract
The valorization of non-grain biomass feedstocks to value-added chemicals, polymers and alternative fuels is a crucial route for the utilization of renewable resources. Inulin belongs to a type of fructans, which is a pivotal platform bridging upstream fructose-rich biomass feedstocks typically represented by Jerusalem artichoke and downstream platform molecules such as alcohols, aldehydes and acids. Fructose can be directly obtained from the inulin hydrolysis and further converted into various platform chemicals, which is a more environmentally economical route than the conventional catalytic upgrading of cellulose. Nevertheless, most perspectives over the last decade have focused on the valorization of cellulose-derived carbohydrates, without much emphasis on the practical importance of one-pot transformation of inulin. In this review, we aim to demonstrate an efficient one-pot tandem transformation system of the inulin as fructose-rich platform towards 5-hydroxymethylfurfural (HMF). Core concerns are placed on elucidating the contributing roles of acid sites and solvents in enhancing the overall catalytic performance. The perspectives presented in this review may contribute to the innovation in the catalytic refining of fructose-rich non-grain biomass and the development of a greener biomass-based energy system.
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Affiliation(s)
- Jian Xiong
- School of Science, Tibet University, Lhasa, 850000, P. R. China
| | - Xuebin Lu
- School of Science, Tibet University, Lhasa, 850000, P. R. China
| | - Wei Li
- School of Science, Tibet University, Lhasa, 850000, P. R. China
| | - Shijie Yang
- School of Science, Tibet University, Lhasa, 850000, P. R. China
| | - Rui Zhang
- School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin, 300384, P. R. China
| | - Xiaoyun Li
- School of Agriculture, Sun Yat-Sen University, Guangzhou, Guangdong, 510275, P. R. China
| | - Jinfeng Han
- College of Chemistry, Jilin University, Changchun, 130012, P. R. China
| | - Dan Li
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, P. R. China
| | - Zhihao Yu
- School of Environmental Science and Engineering, Tianjin Key Laboratory of Biomass/Wastes Utilization, Tianjin University, Tianjin, 300350, P. R. China
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3
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Hazeena SH, Shurpali NJ, Siljanen H, Lappalainen R, Anoop P, Adarsh VP, Sindhu R, Pandey A, Binod P. Bioprocess development of 2, 3-butanediol production using agro-industrial residues. Bioprocess Biosyst Eng 2022; 45:1527-1537. [PMID: 35960335 PMCID: PMC9399043 DOI: 10.1007/s00449-022-02761-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 07/18/2022] [Indexed: 11/26/2022]
Abstract
The valorization of agricultural and industrial wastes for fuel and chemical production benefits environmental sustainability. 2, 3-Butanediol (2,3-BDO) is a value-added platform chemical covering many industrial applications. Since the global market is increasing drastically, production rates have to increase. In order to replace the current petroleum-based 2,3-BDO production, renewable feedstock's ability has been studied for the past few decades. This study aims to find an improved bioprocess for producing 2,3-BDO from agricultural and industrial residues, consequently resulting in a low CO2 emission bioprocess. For this, screening of 13 different biomass samples for hydrolyzable sugars has been done. Alkali pretreatment has been performed with the processed biomass and enzyme hydrolysis performed using commercial cellulase. Among all biomass hydrolysate oat hull and spruce bark biomass could produce the maximum amount of total reducing sugars. Later oat hull and spruce bark biomass with maximum hydrolyzable sugars have been selected for submerged fermentation studies using Enterobacter cloacae SG1. After fermentation, 37.59 and 26.74 g/L of 2,3-BDO was obtained with oat hull and spruce bark biomass, respectively. The compositional analysis of each step of biomass processing has been performed and changes in each component have been evaluated. The compositional analysis has revealed that biomass composition has changed significantly after pretreatment and hydrolysis leading to a remarkable release of sugars which can be utilized by bacteria for 2,3-BDO production. The results have been found to be promising, showing the potential of waste biomass residues as a low-cost raw material for 2,3-BDO production and thus a new lead in an efficient waste management approach for less CO2 emission.
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Affiliation(s)
- Sulfath Hakkim Hazeena
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, Kerala, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Narasinha J Shurpali
- Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio campus, Kuopio, Finland.
- Natural Resources Institute Finland (Luke), Halolantie 31 A, 71750, Maaninka, FI, Finland.
| | - Henri Siljanen
- Department of Environmental and Biological Sciences, University of Eastern Finland, Kuopio campus, Kuopio, Finland
| | - Reijo Lappalainen
- Biomaterials Technology, Dept. of Applied Physics & SIB-Labs, University of Eastern Finland (Kuopio Campus), Yliopistonranta 1 F, 70211, Kuopio, FI, Finland
| | - Puthiyamdam Anoop
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, Kerala, India
| | - Velayudhanpillai Prasannakumari Adarsh
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, Kerala, India
| | - Raveendran Sindhu
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, Kerala, India
| | - Ashok Pandey
- Centre for Innovation and Translational Research, CSIR-Indian Institute of Toxicology Research, Lucknow, 226 001, India
- Sustainability Cluster, School of Engineering, University of Petroleum and Energy Studies, 248 007, Dehradun, India
- Centre for Energy and Environmental Sustainability, Lucknow, 226 029, India
| | - Parameswaran Binod
- Microbial Processes and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology (CSIR-NIIST), Thiruvananthapuram, 695019, Kerala, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
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Lian D, Zhuang S, Shui C, Zheng S, Ma Y, Sun Z, Porras-Domínguez JR, Öner ET, Liang M, Van den Ende W. Characterization of inulolytic enzymes from the Jerusalem artichoke-derived Glutamicibacter mishrai NJAU-1. Appl Microbiol Biotechnol 2022; 106:5525-5538. [PMID: 35896838 DOI: 10.1007/s00253-022-12088-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 07/17/2022] [Accepted: 07/20/2022] [Indexed: 11/28/2022]
Abstract
The rhizosphere context of inulin-accumulating plants, such as Jerusalem artichoke (Helianthus tuberosus), is an ideal starting basis for the discovery of inulolytic enzymes with potential for bio fructose production. We isolated a Glutamicibacter mishrai NJAU-1 strain from this context, showing exo-inulinase activity, releasing fructose from fructans. The growth conditions (pH 9.0; 15 °C) were adjusted, and the production of inulinase by Glutamicibacter mishrai NJAU-1 increased by 90% (0.32 U/mL). Intriguingly, both levan and inulin, but not fructose and sucrose, induced the production of exo-inulinase activity. Two exo-inulinase genes (inu1 and inu2) were cloned and heterologously expressed in Pichia pastoris. While INU2 preferentially hydrolyzed longer inulins, the smallest fructan 1-kestose appeared as the preferred substrate for INU1, also efficiently degrading nystose and sucrose. Active site docking studies with GFn- and Fn-type small inulins (G is glucose, F is fructose, and n is the number of β (2-1) bound fructose moieties) revealed subtle substrate differences between INU1 and INU2. A possible explanation about substrate specificity and INU's protein structure is then suggested. KEY POINTS: • A Glutamicibacter mishrai strain harbored exo-inulinase activity. • Fructans induced the inulolytic activity in G. mishrai while the inulolytic activity was optimized at pH 9.0 and 15 °C. • Two exo-inulinases with differential substrate specificity were characterized.
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Affiliation(s)
- Dan Lian
- Jiangsu Key Lab of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Shuo Zhuang
- Jiangsu Key Lab of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Chen Shui
- Jiangsu Key Lab of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Shicheng Zheng
- Jiangsu Key Lab of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Yanhong Ma
- Institute of Agro-Product Processing, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, Jiangsu, China
| | - Zongjiu Sun
- College of Grassland and Environmental Sciences, Xinjiang Agricultural University, Ürümqi, 830052, Xinjiang, China
| | - Jaime R Porras-Domínguez
- Laboratory of Molecular Plant Biology and KU Leuven Plant Institute, KU Leuven, Kasteelpark Arenberg 31, 3001, Louvain, Belgium
| | - Ebru Toksoy Öner
- Department of Bioengineering, Faculty of Engineering, Marmara University, Istanbul, 34722, Turkey
| | - Mingxiang Liang
- Jiangsu Key Lab of Marine Biology, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China.
| | - Wim Van den Ende
- Laboratory of Molecular Plant Biology and KU Leuven Plant Institute, KU Leuven, Kasteelpark Arenberg 31, 3001, Louvain, Belgium
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5
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Cen X, Zhang R, He L, Tang X, Wu Q, Zhou J, Huang Z. Deletion of the Loop Linking Two Domains of Exo-Inulinase InuAMN8 Diminished the Enzymatic Thermo-Halo-Alcohol Tolerance. Front Microbiol 2022; 13:924447. [PMID: 35814689 PMCID: PMC9260423 DOI: 10.3389/fmicb.2022.924447] [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: 04/20/2022] [Accepted: 05/31/2022] [Indexed: 11/27/2022] Open
Abstract
Inulin is the rich water-soluble storage polysaccharide after starch in nature, and utilization of inulin through hydrolysis of exo-inulinases has attracted much attention. Thermo-halo-alcohol tolerance is essential for exo-inulinase applications, while no report reveals the molecular basis involved in halo-alcohol tolerance of exo-inulinases via experimental data. In this study, two loops of exo-inulinase InuAMN8, including the loop built with 360GHVRLGPQP368 linking domains of Glyco_hydro_32N and Glyco_hydro_32C and another loop built with 169GGAG172 in the catalytic domain, were deleted to generate mutants MutG360Δ9 and MutG169Δ4, respectively. After heterologous expression, purification, and dialysis, InuAMN8, MutG169Δ4, and MutG360Δ9 showed half-lives of 144, 151, and 7 min at 50°C, respectively. InuAMN8 and MutG169Δ4 were very stable, while MutG360Δ9 showed a half-life of approximately 60 min in 5.0% (w/v) NaCl, and they showed half-lives of approximately 60 min in 25.0, 25.0, and 5.0% (w/v) ethanol, respectively. Structural analysis indicated that two cation-π bonds, which contributed to thermal properties of InuAMN8 at high temperatures, broke in MutG360Δ9. Four basic amino acid residues were exposed to the structural surface of MutG360Δ9 and formed positive and neutral electrostatic potential that caused detrimental effects on halo-alcohol tolerance. The study may provide a better understanding of the loop-function relationships that are involved in thermo-halo-alcohol adaptation of enzymes in extreme environment.
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Affiliation(s)
- Xiaolong Cen
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming, China
- College of Life Sciences, Yunnan Normal University, Kunming, China
- Key Laboratory of Biomass Energy and Environmental Biotechnology, Yunnan Normal University, Kunming, China
- Key Laboratory of Yunnan Provincial Education Department for Plateau Characteristic Food Enzymes, Yunnan Normal University, Kunming, China
| | - Rui Zhang
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming, China
- College of Life Sciences, Yunnan Normal University, Kunming, China
- Key Laboratory of Biomass Energy and Environmental Biotechnology, Yunnan Normal University, Kunming, China
- Key Laboratory of Yunnan Provincial Education Department for Plateau Characteristic Food Enzymes, Yunnan Normal University, Kunming, China
| | - Limei He
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming, China
- College of Life Sciences, Yunnan Normal University, Kunming, China
- Key Laboratory of Biomass Energy and Environmental Biotechnology, Yunnan Normal University, Kunming, China
- Key Laboratory of Yunnan Provincial Education Department for Plateau Characteristic Food Enzymes, Yunnan Normal University, Kunming, China
| | - Xianghua Tang
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming, China
- College of Life Sciences, Yunnan Normal University, Kunming, China
- Key Laboratory of Biomass Energy and Environmental Biotechnology, Yunnan Normal University, Kunming, China
- Key Laboratory of Yunnan Provincial Education Department for Plateau Characteristic Food Enzymes, Yunnan Normal University, Kunming, China
| | - Qian Wu
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming, China
- College of Life Sciences, Yunnan Normal University, Kunming, China
- Key Laboratory of Biomass Energy and Environmental Biotechnology, Yunnan Normal University, Kunming, China
- Key Laboratory of Yunnan Provincial Education Department for Plateau Characteristic Food Enzymes, Yunnan Normal University, Kunming, China
| | - Junpei Zhou
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming, China
- College of Life Sciences, Yunnan Normal University, Kunming, China
- Key Laboratory of Biomass Energy and Environmental Biotechnology, Yunnan Normal University, Kunming, China
- Key Laboratory of Yunnan Provincial Education Department for Plateau Characteristic Food Enzymes, Yunnan Normal University, Kunming, China
- *Correspondence: Junpei Zhou, ,
| | - Zunxi Huang
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University, Kunming, China
- College of Life Sciences, Yunnan Normal University, Kunming, China
- Key Laboratory of Biomass Energy and Environmental Biotechnology, Yunnan Normal University, Kunming, China
- Key Laboratory of Yunnan Provincial Education Department for Plateau Characteristic Food Enzymes, Yunnan Normal University, Kunming, China
- Zunxi Huang,
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Low Indirect Land Use Change (ILUC) Energy Crops to Bioenergy and Biofuels—A Review. ENERGIES 2022. [DOI: 10.3390/en15124348] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Energy crops are dedicated cultures directed for biofuels, electricity, and heat production. Due to their tolerance to contaminated lands, they can alleviate and remediate land pollution by the disposal of toxic elements and polymetallic agents. Moreover, these crops are suitable to be exploited in marginal soils (e.g., saline), and, therefore, the risk of land-use conflicts due to competition for food, feed, and fuel is reduced, contributing positively to economic growth, and bringing additional revenue to landowners. Therefore, further study and investment in R&D is required to link energy crops to the implementation of biorefineries. The main objective of this study is to present a review of the potential of selected energy crops for bioenergy and biofuels production, when cultivated in marginal/degraded/contaminated (MDC) soils (not competing with agriculture), contributing to avoiding Indirect Land Use Change (ILUC) burdens. The selected energy crops are Cynara cardunculus, Arundo donax, Cannabis sativa, Helianthus tuberosus, Linum usitatissimum, Miscanthus × giganteus, Sorghum bicolor, Panicum virgatum, Acacia dealbata, Pinus pinaster, Paulownia tomentosa, Populus alba, Populus nigra, Salix viminalis, and microalgae cultures. This article is useful for researchers or entrepreneurs who want to know what kind of crops can produce which biofuels in MDC soils.
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An YM, Zhuang J, Li Y, Dai JY, Xiu ZL. Pretreatment of Jerusalem artichoke stalk using hydroxylammonium ionic liquids and their influences on 2,3-butanediol fermentation by Bacillus subtilis. BIORESOURCE TECHNOLOGY 2022; 354:127219. [PMID: 35470003 DOI: 10.1016/j.biortech.2022.127219] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/19/2022] [Accepted: 04/20/2022] [Indexed: 06/14/2023]
Abstract
Pretreatment of lignocellulose is a vital step for biological production of bio-chemicals and bio-fuels. In this work, the pretreatment of Jerusalem artichoke stalk (JAS) by hydroxylammonium ionic liquids was evaluated based on pretreatment efficiency including polysaccharide recovery and enzymatic digestibility, and influence of ionic liquids on 2,3-butanediol fermentation using Bacillus subtilis. The results showed ethanolammonium acetate (EOAA) was efficient in JAS pretreatment, and maximum cell density was increased 25% when EOAA concentration was not greater than 0.3 mol/L in medium, while the total concentration of acetoin and 2,3-butanediol was 15% greater than the control at 0.1 mol/L EOAA. After the pretreatment under optimized conditions of 170 °C for 5-h and liquid-solid ratio of 18, about 87% cellulose and 75% hemicellulose were recovered, and glucose yield of 64% and xylose of 66% were obtained after 24-h hydrolysis of JAS residue by cellulase (15 FPU/g) with solid loading of 10 wt%.
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Affiliation(s)
- Yu-Meng An
- School of Bioengineering, Dalian University of Technology, Dalian 116024, PR China
| | - Jing Zhuang
- School of Bioengineering, Dalian University of Technology, Dalian 116024, PR China
| | - Yan Li
- School of Bioengineering, Dalian University of Technology, Dalian 116024, PR China
| | - Jian-Ying Dai
- School of Bioengineering, Dalian University of Technology, Dalian 116024, PR China.
| | - Zhi-Long Xiu
- School of Bioengineering, Dalian University of Technology, Dalian 116024, PR China
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He L, Zhang R, Shen J, Miao Y, Zeng C, Tang X, Wu Q, Zhou J, Huang Z. Improving the low-temperature properties of an exo-inulinase via the deletion of a loop fragment located in its catalytic pocket. ELECTRON J BIOTECHN 2022. [DOI: 10.1016/j.ejbt.2021.09.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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9
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Co-Inoculation of an Endophytic and Arbuscular Mycorrhizal Fungus Improve Growth and Yield of Helianthus tuberosus L. under Field Condition. J Fungi (Basel) 2021; 7:jof7110976. [PMID: 34829263 PMCID: PMC8625637 DOI: 10.3390/jof7110976] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/08/2021] [Accepted: 11/15/2021] [Indexed: 11/17/2022] Open
Abstract
Endophytic fungi (EPF) and arbuscular mycorrhizal fungi (AMF) symbioses can promote the growth and productivity of several types of plants. This work aimed to investigate the effect of co-inoculation of an EPF Exserohilum rostratum NMS1.5 and an AMF Glomus etunicatum UDCN52867 g.5 on the growth and yields of sunchoke (Helianthus tuberosus L.) compared to the effects of full-dose and half-dose chemical fertilizer (15-15-15) under field conditions. Several plant growth parameters of the co-inoculated plants were significantly higher than the other treatments. Remarkably, such an effect was relatively equal to that of the full-dose chemical fertilizers. Moreover, the co-inoculation of EPF and AMF significantly improved the tuber yield production, even better than the use of a chemical fertilizer. This is the first report to show that plant growth promoting effects of the co-inoculation of EPF and AMF were exceptionally greater than those of the chemical fertilizer. Therefore, our EPF and AMF could potentially be used as a biofertilizer for promoting the growth and yield of sunchoke in the fields.
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Shao T, Yuan P, Zhang W, Dou D, Wang F, Hao C, Liu C, Han J, Chen K, Wang G. Preparation and characterization of sulfated inulin-type fructans from Jerusalem artichoke tubers and their antitumor activity. Carbohydr Res 2021; 509:108422. [PMID: 34478936 DOI: 10.1016/j.carres.2021.108422] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 08/17/2021] [Accepted: 08/18/2021] [Indexed: 01/05/2023]
Abstract
The modification of polysaccharides is important for enhancing their biological activities. In this study, a pure inulin-type fructan, denoted as Jerusalem artichoke polysaccharide (P-JAP), was purified from Jerusalem artichoke tubers and modified by sulfation via treatment with a sulfur trioxide-pyridine complex to produce its sulfated derivative (S-JAP). Fourier-transform infrared spectroscopic analysis confirmed the successful introduction of sulfate groups. The inhibitory effects of S-JAP on the proliferation of human liver hepatocellular carcinoma (HepG2) cells was evaluated via a CCK-8 assay, and the pro-apoptotic effects were assessed using annexin V-FITC/PI double staining. The inhibition rates of various concentrations of S-JAP on HepG2 cells after 24, 48, and 72 h were significantly higher than those of P-JAP; moreover, S-JAP succeeded in promoting cell apoptosis. Thus, the sulfate-modified polysaccharide extracted from Jerusalem artichoke tubers was shown to exhibit effective antitumor activity with potential for further development.
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Affiliation(s)
- Taili Shao
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, Anhui Province Key Laboratory of Active Biological Macro-molecules, Wannan Medical College, Wuhu, 241002, China; Drug Research & Development Center, School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Pingchuan Yuan
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, Anhui Province Key Laboratory of Active Biological Macro-molecules, Wannan Medical College, Wuhu, 241002, China
| | - Wenzhi Zhang
- Drug Research & Development Center, School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Deyu Dou
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, Anhui Province Key Laboratory of Active Biological Macro-molecules, Wannan Medical College, Wuhu, 241002, China
| | - Fengge Wang
- Drug Research & Development Center, School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Chengyi Hao
- College of Pharmacy, Jilin Medical University, Jilin 132013, China
| | - Chunyan Liu
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, Anhui Province Key Laboratory of Active Biological Macro-molecules, Wannan Medical College, Wuhu, 241002, China; Drug Research & Development Center, School of Pharmacy, Wannan Medical College, Wuhu 241002, China
| | - Jun Han
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, Anhui Province Key Laboratory of Active Biological Macro-molecules, Wannan Medical College, Wuhu, 241002, China; Drug Research & Development Center, School of Pharmacy, Wannan Medical College, Wuhu 241002, China.
| | - Kaoshan Chen
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, Anhui Province Key Laboratory of Active Biological Macro-molecules, Wannan Medical College, Wuhu, 241002, China; Drug Research & Development Center, School of Pharmacy, Wannan Medical College, Wuhu 241002, China.
| | - Guodong Wang
- Anhui Provincial Engineering Research Center for Polysaccharide Drugs, Provincial Engineering Laboratory for Screening and Re-evaluation of Active Compounds of Herbal Medicines in Southern Anhui, Anhui Province Key Laboratory of Active Biological Macro-molecules, Wannan Medical College, Wuhu, 241002, China; Drug Research & Development Center, School of Pharmacy, Wannan Medical College, Wuhu 241002, China.
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11
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Li X, Zhang Q, Wang W, Yang ST. A Novel Inulin-Mediated Ethanol Precipitation Method for Separating Endo-Inulinase From Inulinases for Inulooligosaccharides Production From Inulin. Front Bioeng Biotechnol 2021; 9:679720. [PMID: 33996788 PMCID: PMC8116588 DOI: 10.3389/fbioe.2021.679720] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2021] [Accepted: 04/01/2021] [Indexed: 11/13/2022] Open
Abstract
Inulin is a kind of polysaccharide that can be obtained various biomass. Inulooligosaccharides (IOS), a kind of oligosaccharides that can be obtained from inulin by enzymatic hydrolysis using inulinases, have been regarded as the functional food ingredients. Commercially available inulinases produced by natural Aspergillus niger contained both endo- and exo-inulinase activities. For IOS production from inulin, it is desirable to use only endo-inulinase as exo-inulinase would produce mainly the monosacchairde fructose from inulin. In the present study, a simple inulin-mediated ethanol precipitation method was developed to separate endo- and exo-inulinases present in natural inulinases. IOS production from inulin using the enriched endo-inulinase was then optimized in process conditions including pH and temperature, achieving a high yield of ∼94%. The resultant IOS products had a degree of polymerization ranging from 2 to 7. The study demonstrated a novel method for obtaining partially purified or enriched endo-inulinase for IOS production from inulin in an efficient process.
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Affiliation(s)
- Xin Li
- Jiangsu Co-innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing, China
- Jiangsu Province Key Laboratory of Green Biomass-Based Fuels and Chemicals, Nanjing, China
| | - Qiannan Zhang
- Jiangsu Province Key Laboratory of Green Biomass-Based Fuels and Chemicals, Nanjing, China
| | - Wei Wang
- Jiangsu Province Key Laboratory of Green Biomass-Based Fuels and Chemicals, Nanjing, China
| | - Shang-Tian Yang
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, United States
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12
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Wang CH, Xiong WP, Huang C, Li XM, Wang QY, Huang RB. Engineering better catalytic activity and acidic adaptation into Kluyveromyces marxianus exoinulinase using site-directed mutagenesis. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2021; 101:2472-2482. [PMID: 33034040 DOI: 10.1002/jsfa.10873] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Revised: 10/03/2020] [Accepted: 10/09/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Exoinulinase catalyzes the successive removal of individual fructose moiety from the non-reducing end of the inulin molecule, which is useful for biotechnological applications like producing fructan-based non-grain biomass energy and high-fructose syrup. In this study, an exoinulinase (KmINU) from Kluyveromyces marxianus DSM 5418 was tailored for increased catalytic activity and acidic adaptation for inulin hydrolysis processes by rational site-directed mutagenesis. RESULTS Three mutations, S124Y, N158S and Q215V distal to the catalytic residues of KmINU were designed and heterologously expressed in Pichia pastoris GS115. Compared to the wild-type, S124Y shifted the pH-activity profile towards acidic pH values and increased the catalytic activity and catalytic efficiency by 59% and 99% to 688.4 ± 17.03 s-1 and 568.93 L mmol-1 s-1 , respectively. N158S improved the catalytic activity under acidic pH conditions, giving a maximum value of 464.06 ± 14.06 s-1 on inulin at pH 4.5. Q215V markedly improved the substrate preference for inulin over sucrose by 5.56-fold, and showed catalytic efficiencies of 208.82 and 6.88 L mmol-1 s-1 towards inulin and sucrose, respectively. Molecular modeling and computational docking indicated that structural reorientation may underlie the increased catalytic activity, acidic adaptation and substrate preference. CONCLUSIONS The KmINU mutants may serve as industrially promising candidates for inulin hydrolysis. Protein engineering of exoinulinase here provides a successful example of the extent to which mutating non-conserved substrate recognition and binding residues distal to the active site can be used for industrial enzyme improvements. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Cheng-Hua Wang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Wu-Ping Xiong
- College of Life Science and Technology, Guangxi University, Nanning, China
| | - Cheng Huang
- College of Light Industry and Food Engineering, Guangxi University, Nanning, China
| | - Xiao-Ming Li
- Nanning Sinozyme Biotechnology Co., Ltd, Nanning, China
| | - Qing-Yan Wang
- State Key Laboratory of Non-Food Biomass and Enzyme Technology, National Engineering Research Center for Non-food Biorefinery, Guangxi Key Laboratory of Biorefinery, Guangxi Academy of Sciences, Nanning, China
| | - Ri-Bo Huang
- College of Life Science and Technology, Guangxi University, Nanning, China
- State Key Laboratory of Non-Food Biomass and Enzyme Technology, National Engineering Research Center for Non-food Biorefinery, Guangxi Key Laboratory of Biorefinery, Guangxi Academy of Sciences, Nanning, China
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13
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Cheng M, Wu H, Zhang W, Mu W. Difructose anhydride III: a 50-year perspective on its production and physiological functions. Crit Rev Food Sci Nutr 2021; 62:6714-6725. [PMID: 33775189 DOI: 10.1080/10408398.2021.1904823] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
Production and applications of difructose anhydride III (DFA-III) have attracted considerable attention because of its versatile physiological functions. Recently, large-scale production of DFA-III has been continuously explored, which opens a horizon for applications in the food and pharmaceutical industries. This review updates recent advances involving DFA-III, including: biosynthetic strategies, purification, and large-scale production of DFA-III; physiological functions of DFA-III and related mechanisms; DFA-III safety evaluations; present applications in food systems, existing problems, and further research prospects. Currently, enzymatic synthesis of DFA-III has been conducted both industrially and in academic research. Two biosynthetic strategies for DFA-III production are summarized: single- and double enzyme-mediated. DFA-III purification is achieved via yeast fermentation. Enzyme membrane bioreactors have been applied to meet the large-scale production demands for DFA-III. In addition, the primary physiological functions of DFA-III and their underlying mechanisms have been proposed. However, current applications of DFA-III are limited. Further research regarding DFA-III should focus on commercial production and purification, comprehensive study of physiological properties, extensive investigation of large-scale human experiments, and expansion of industrial applications. It is worthy to dig deep into potential application and commercial value of DFA-III.
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Affiliation(s)
- Mei Cheng
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Hao Wu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Wenli Zhang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Wanmeng Mu
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China.,International Joint Laboratory on Food Safety, Jiangnan University, Wuxi, Jiangsu, China
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14
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Corrado I, Cascelli N, Ntasi G, Birolo L, Sannia G, Pezzella C. Optimization of Inulin Hydrolysis by Penicillium lanosocoeruleum Inulinases and Efficient Conversion Into Polyhydroxyalkanoates. Front Bioeng Biotechnol 2021; 9:616908. [PMID: 33732688 PMCID: PMC7959777 DOI: 10.3389/fbioe.2021.616908] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Accepted: 01/29/2021] [Indexed: 11/13/2022] Open
Abstract
Inulin, a polydisperse fructan found as a common storage polysaccharide in the roots of several plants, represents a renewable non-food biomass resource for the synthesis of bio-based products. Exploitation of inulin-containing feedstocks requires the integration of different processes, including inulinase production, saccharification of inulin, and microbial fermentation for the conversion of released sugars into added-value products. In this work paper, a new microbial source of inulinase, Penicillium lanosocoeruleum, was identified through the screening of a fungal library. Inulinase production using inulin as C-source was optimized, reaching up to 28 U mL-1 at the 4th day of growth. The fungal inulinase mixture (PlaI) was characterized for pH and temperature stability and activity profile, and its isoenzymes composition was investigated by proteomic strategies. Statistical optimization of inulin hydrolysis was performed using a central composite rotatable design (CCRD), by analyzing the effect of four factors. In the optimized conditions (T, 45.5°C; pH, 5.1; substrate concentration, 60 g L-1; enzyme loading, 50 U gsubstrate -1), up to 96% inulin is converted in fructose within 20 h. The integration of PlaI in a process for polyhydroxyalkanoate (PHA) production by Cupriavidus necator from inulin was tested in both separated hydrolysis and fermentation (SHF) and simultaneous saccharification and fermentation (SSF). A maximum of 3.2 g L-1 of PHB accumulation, corresponding to 82% polymer content, was achieved in the SSF. The proved efficiency in inulin hydrolysis and its effective integration into a SSF process pave the way to a profitable exploitation of the PlaI enzymatic mixture in inulin-based biorefineries.
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Affiliation(s)
- Iolanda Corrado
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Naples, Italy
| | - Nicoletta Cascelli
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Naples, Italy
| | - Georgia Ntasi
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Naples, Italy
| | - Leila Birolo
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Naples, Italy
| | - Giovanni Sannia
- Department of Chemical Sciences, University of Naples Federico II, Complesso Universitario di Monte Sant'Angelo, Naples, Italy
| | - Cinzia Pezzella
- Department of Agricultural Sciences, University of Naples Federico II, Naples, Italy
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15
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Meng Q, Lu C, Gao H, Chen G, Wu L, Wu J, Li S, He BF. Efficient biosynthesis of exopolysaccharide from Jerusalem artichoke using a novel strain of Bacillus velezensis LT-2. BIORESOURCE TECHNOLOGY 2021; 320:124346. [PMID: 33161315 DOI: 10.1016/j.biortech.2020.124346] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/25/2020] [Accepted: 10/26/2020] [Indexed: 06/11/2023]
Abstract
This study focused on the non-grain biorefining of Jerusalem artichoke (JA) for exopolysaccharide (EPS) efficient production by using Bacillus velezensis LT-2. Results showed that LT-2 could directly utilize JA tuber power (JATP) for EPS production, and its EPS yield reached 11.47 ± 0.33 g/L in the simultaneous saccharification and fermentation (SSF) mode. Furthermore, the SSF mode shortened the fermentation period by 26.67% and reduced the fermentation cost by 79.41% due to the improved substrate utilization and the avoidance of inhibition effects of a high fructose concentration. Transcriptome sequencing results showed that inulin could accelerate nucleotide-sugars biosynthesis, induce EPS synthetic gene cluster transcription, and strengthen the electron transport respiratory chain and the transporter systems, thereby ensuring EPS efficient synthesis. This work exhibited a productive non-grain and environmentally friendly fermentation strategy for EPS biosynthesis, which promoted the JA industry development and created new prospects for high-value industrial products biosynthesis by using JATP.
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Affiliation(s)
- Qiao Meng
- College of Biological and Food Engineering, Changshu Institute of Technology, 99 South Third Ring Road, Changshu 215500, China
| | - Chenghui Lu
- College of Biological and Food Engineering, Changshu Institute of Technology, 99 South Third Ring Road, Changshu 215500, China
| | - Hua Gao
- College of Biological and Food Engineering, Changshu Institute of Technology, 99 South Third Ring Road, Changshu 215500, China
| | - Guoxuan Chen
- College of Biological and Food Engineering, Changshu Institute of Technology, 99 South Third Ring Road, Changshu 215500, China
| | - Lingtian Wu
- College of Biological and Food Engineering, Changshu Institute of Technology, 99 South Third Ring Road, Changshu 215500, China; Nanjing Tech University, 30 Puzhu South Road, Nanjing 211816, China; Jiangsu Jiuwu High-tech Co., Ltd, 9 Yuansi Road, Nanjing 211808, China.
| | - Jinnan Wu
- College of Biological and Food Engineering, Changshu Institute of Technology, 99 South Third Ring Road, Changshu 215500, China
| | - Sha Li
- Nanjing Tech University, 30 Puzhu South Road, Nanjing 211816, China
| | - Bing-Fang He
- Nanjing Tech University, 30 Puzhu South Road, Nanjing 211816, China
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16
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Li W, Zhu Y, Jiang X, Zhang W, Guang C, Mu W. One-pot production of d-allulose from inulin by a novel identified thermostable exoinulinase from Aspergillus piperis and Dorea sp. d-allulose 3-epimerase. Process Biochem 2020. [DOI: 10.1016/j.procbio.2020.08.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Zhang R, He L, Shen J, Miao Y, Tang X, Wu Q, Zhou J, Huang Z. Improving low-temperature activity and thermostability of exo-inulinase InuAGN25 on the basis of increasing rigidity of the terminus and flexibility of the catalytic domain. Bioengineered 2020; 11:1233-1244. [PMID: 33131413 PMCID: PMC8291790 DOI: 10.1080/21655979.2020.1837476] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022] Open
Abstract
Enzymes displaying high activity at low temperatures and good thermostability are attracting attention in many studies. However, improving low-temperature activity along with the thermostability of enzymes remains challenging. In this study, the mutant Mut8S, including eight sites (N61E, K156R, P236E, T243K, D268E, T277D, Q390K, and R409D) mutated from the exo-inulinase InuAGN25, was designed on the basis of increasing the number of salt bridges through comparison between the low-temperature-active InuAGN25 and thermophilic exo-inulinases. The recombinant Mut8S, which was expressed in Escherichia coli, was digested by human rhinovirus 3 C protease to remove the amino acid fusion sequence at N-terminus, producing RfsMut8S. Compared with wild-type RfsMInuAGN25, the mutant RfsMut8S showed (1) lower root mean square deviation values, (2) lower root mean square fluctuation (RMSF) values of residues in six regions of the N and C termini but higher RMSF values in five regions of the catalytic pocket, (3) higher activity at 0-40°C, and (4) better thermostability at 50°C. This study proposes a way to increase low-temperature activity along with a thermostability improvement of exo-inulinase on the basis of increasing the rigidity of the terminus and the flexibility of the catalytic domain. These findings may prove useful in formulating rational designs for increasing the thermal performance of enzymes.
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Affiliation(s)
- Rui Zhang
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University , Kunming, People's Republic of China.,College of Life Sciences, Yunnan Normal University , Kunming, People's Republic of China.,Key Laboratory of Yunnan for Biomass Energy and Biotechnology of Environment, Kunming, Yunnan, People's Republic of China
| | - Limei He
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University , Kunming, People's Republic of China.,College of Life Sciences, Yunnan Normal University , Kunming, People's Republic of China.,Key Laboratory of Yunnan for Biomass Energy and Biotechnology of Environment, Kunming, Yunnan, People's Republic of China
| | - Jidong Shen
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University , Kunming, People's Republic of China.,College of Life Sciences, Yunnan Normal University , Kunming, People's Republic of China.,Key Laboratory of Yunnan for Biomass Energy and Biotechnology of Environment, Kunming, Yunnan, People's Republic of China
| | - Ying Miao
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University , Kunming, People's Republic of China.,College of Life Sciences, Yunnan Normal University , Kunming, People's Republic of China.,Key Laboratory of Yunnan for Biomass Energy and Biotechnology of Environment, Kunming, Yunnan, People's Republic of China
| | - Xianghua Tang
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University , Kunming, People's Republic of China.,College of Life Sciences, Yunnan Normal University , Kunming, People's Republic of China.,Key Laboratory of Yunnan for Biomass Energy and Biotechnology of Environment, Kunming, Yunnan, People's Republic of China
| | - Qian Wu
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University , Kunming, People's Republic of China.,College of Life Sciences, Yunnan Normal University , Kunming, People's Republic of China.,Key Laboratory of Yunnan for Biomass Energy and Biotechnology of Environment, Kunming, Yunnan, People's Republic of China
| | - Junpei Zhou
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University , Kunming, People's Republic of China.,College of Life Sciences, Yunnan Normal University , Kunming, People's Republic of China.,Key Laboratory of Yunnan for Biomass Energy and Biotechnology of Environment, Kunming, Yunnan, People's Republic of China
| | - Zunxi Huang
- Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, Yunnan Normal University , Kunming, People's Republic of China.,College of Life Sciences, Yunnan Normal University , Kunming, People's Republic of China.,Key Laboratory of Yunnan for Biomass Energy and Biotechnology of Environment, Kunming, Yunnan, People's Republic of China
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18
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19
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Li S, Jiang H, Zhang J, Zhang AS, Zhao YD, Zhao X, Zhao ZP. Fabrication of porous polysulfone microsphere covalently grafted with ionic liquid as catalyst and its catalytic hydrolysis kinetics of inulin. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2020.115544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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20
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Abstract
Industrial biotechnology is a continuously expanding field focused on the application of microorganisms to produce chemicals using renewable sources as substrates. Currently, an increasing interest in new versatile processes, able to utilize a variety of substrates to obtain diverse products, can be observed. A robust microbial strain is critical in the creation of such processes. Lactic acid bacteria (LAB) are used to produce a wide variety of chemicals with high commercial interest. Lactic acid (LA) is the most predominant industrial product obtained from LAB fermentations, and its production is forecasted to rise as the result of the increasing demand of polylactic acid. Hence, the creation of new ways to revalorize LA production processes is of high interest and could further enhance its economic value. Therefore, this review explores some co-products of LA fermentations, derived from LAB, with special focus on bacteriocins, lipoteichoic acid, and probiotics. Finally, a multi-product process involving LA and the other compounds of interest is proposed.
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21
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A one-pot two-enzyme system on the production of high value-added D-allulose from Jerusalem artichoke tubers. Process Biochem 2020. [DOI: 10.1016/j.procbio.2019.10.006] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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22
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Raw plant-based biorefinery: A new paradigm shift towards biotechnological approach to sustainable manufacturing of HMF. Biotechnol Adv 2019; 37:107422. [DOI: 10.1016/j.biotechadv.2019.107422] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Revised: 08/04/2019] [Accepted: 08/05/2019] [Indexed: 01/13/2023]
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23
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Cao W, Wang Y, Shen F, Luo J, Yin J, Qiao C, Wan Y. Efficient β-poly(l-malic acid) production from Jerusalem artichoke by Aureobasidium pullulans ipe-1 immobilized in luffa sponge matrices. BIORESOURCE TECHNOLOGY 2019; 288:121497. [PMID: 31176942 DOI: 10.1016/j.biortech.2019.121497] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 05/14/2019] [Accepted: 05/15/2019] [Indexed: 06/09/2023]
Abstract
β-poly(l-malic acid) (PMLA) production by Aureobasidium pullulans ipe-1 using Jerusalem artichoke tuber (JA) hydrolysate as a low cost carbon source was developed. The PMLA production was favored by JA pretreated with 0.06 M nitric acid without adding exogenous nitrogen sources into fermentation medium. With an initial 130 g/L total sugar of the JA hydrolysate, the highest PMLA productivity 0.52 g/L·h was achieved, which was increased by 2.0 folds compared to that with sole glucose case. To further enhance PMLA productivity, the cells were immobilized in luffa sponge matrices, and repeated batch culture was carried out for 4 cycles. The resulting PMLA productivity was further enhanced by 50% compared with the batch culture. The cost of PMLA production in the JA case was only 5.4% of that in the glucose case. The outcomes of this work provided a strategy of PMLA production on a commercial scale.
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Affiliation(s)
- Weifeng Cao
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Yujue Wang
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China; University of the Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, PR China
| | - Fei Shen
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China
| | - Jianquan Luo
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China; University of the Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, PR China
| | - Junxiang Yin
- China National Center for Biotechnology Development, Beijing 100036, PR China
| | - Changsheng Qiao
- College of Bioengineering, Tianjin University of Science and Technology, Tianjin 300457, PR China
| | - Yinhua Wan
- State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China; University of the Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100049, PR China.
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24
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Improving poly-(γ-glutamic acid) production from a glutamic acid-independent strain from inulin substrate by consolidated bioprocessing. Bioprocess Biosyst Eng 2019; 42:1711-1720. [DOI: 10.1007/s00449-019-02167-w] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Accepted: 06/30/2019] [Indexed: 12/28/2022]
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25
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Kim M, Lee B, Kim HS, Nam K, Moon M, Oh HM, Chang YK. Increased biomass and lipid production of Ettlia sp. YC001 by optimized C and N sources in heterotrophic culture. Sci Rep 2019; 9:6830. [PMID: 31048751 PMCID: PMC6497641 DOI: 10.1038/s41598-019-43366-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2019] [Accepted: 04/17/2019] [Indexed: 01/21/2023] Open
Abstract
The culture conditions and media composition for the heterotrophic culture of an axenic strain of Ettlia sp. YC001 were firstly optimized using the Plackett-Burman design (PBD) and response surface methodology (RSM). The strain successfully showed higher productivity in the basal media without any light illumination at 32.2 to 33.3 °C. The PBD results showed that the most effective components for biomass productivity of Ettlia sp. were fructose and yeast extract for sources of C and N, respectively. The RSM results showed an optimal level of 72.2 g/L for fructose and 21.5 g/L for yeast extract, resulting in 46.1 g/L biomass with a lipid content of 13.8% over a course of 9 days. Using a 5 L scaled-up fermentation system for 6 days, the production of biomass and lipids was 7.21 g/L/day and 1.18 g/L/day, respectively. Consequently, heterotrophic cultivation of Ettlia sp. YC001 provided much higher production of biomass and lipids than those of autotrophic cultivation. As further research, the use of substitute substrates instead of fructose and yeast extract should be developed to reduce production costs.
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Affiliation(s)
- Minsik Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Bongsoo Lee
- Department of Microbial and Nano Materials, Mokwon University, 88 Doanbuk-ro, Yuseong-gu, Daejeon, 35349, Republic of Korea
| | - Hee Su Kim
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea
| | - Kibok Nam
- LG Chem, 30 Magokjungang 10-ro, Gangseo-gu, Seoul, 07796, Republic of Korea
| | - Myounghoon Moon
- Gwangju Bio/Energy R&D Center, Korea Institute of Energy Research (KIER), 270-25 Samso-ro, Buk-gu, Gwangju, 61003, Republic of Korea
| | - Hee-Mock Oh
- Korea Research Institute of Bioscience and Biotechnology (KRIBB), 125 Gwahak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.
| | - Yong Keun Chang
- Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea. .,Advanced Biomass R&D Center (ABC), 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.
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26
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Qiu Y, Zhu Y, Zhang Y, Sha Y, Xu Z, Li S, Feng X, Xu H. Characterization of a Regulator pgsR on Endogenous Plasmid p2Sip and Its Complementation for Poly(γ-glutamic acid) Accumulation in Bacillus amyloliquefaciens. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:3711-3722. [PMID: 30866628 DOI: 10.1021/acs.jafc.9b00332] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Bacillus amyloliquefaciens NX-2S154 is a promising poly(γ-glutamic acid) (γ-PGA) producing strain discovered in previous studies. However, the wild-type strain contains an unknown endogenous plasmid, p2Sip, which causes low transformation efficiency and instability of exogenous plasmids. In our study, p2Sip is 5622 bp with 41% G+C content and contains four putative open reading frames (ORFs), including genes repB, hsp, and mobB and γ-PGA-synthesis regulator, pgsR. Elimination of p2Sip from strain NX-2S154 delayed γ-PGA secretion and decreased production of γ-PGA by 18.1%. Integration of a pgsR expression element into the genomic BamHI locus using marker-free manipulation based on pheS* increased the γ-PGA titer by 8%. pgsR overexpression upregulated the expression of γ-PGA synthase pgsB, regulator degQ, and glutamic acid synthase gltA, thus increasing the γ-PGA production in B. amyloliquefaciens NB. Our results indicated that pgsR from p2Sip plays an important regulatory role in γ-PGA synthesis in B. amyloliquefaciens.
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Affiliation(s)
- Yibin Qiu
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing 211816 , China
- College of Food Science and Light Industry , Nanjing Tech University , Nanjing 211816 , China
| | - Yifan Zhu
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing 211816 , China
- College of Food Science and Light Industry , Nanjing Tech University , Nanjing 211816 , China
| | - Yatao Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing 211816 , China
- College of Food Science and Light Industry , Nanjing Tech University , Nanjing 211816 , China
| | - Yuanyuan Sha
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing 211816 , China
- College of Food Science and Light Industry , Nanjing Tech University , Nanjing 211816 , China
| | - Zongqi Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing 211816 , China
- College of Food Science and Light Industry , Nanjing Tech University , Nanjing 211816 , China
| | - Sha Li
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing 211816 , China
- College of Food Science and Light Industry , Nanjing Tech University , Nanjing 211816 , China
| | - Xiaohai Feng
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing 211816 , China
- College of Food Science and Light Industry , Nanjing Tech University , Nanjing 211816 , China
| | - Hong Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering , Nanjing 211816 , China
- College of Food Science and Light Industry , Nanjing Tech University , Nanjing 211816 , China
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Qiu Y, Zhu Y, Zhan Y, Zhang Y, Sha Y, Zhan Y, Xu Z, Li S, Feng X, Xu H. Systematic unravelling of the inulin hydrolase from Bacillus amyloliquefaciens for efficient conversion of inulin to poly-(γ-glutamic acid). BIOTECHNOLOGY FOR BIOFUELS 2019; 12:145. [PMID: 31210783 PMCID: PMC6563369 DOI: 10.1186/s13068-019-1485-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2019] [Accepted: 06/04/2019] [Indexed: 05/23/2023]
Abstract
BACKGROUND Bacillus amyloliquefaciens NB is a newly discovered strain, which produces poly-(γ-glutamic acid) (γ-PGA) from raw extracted inulin of Jerusalem artichoke tubers; however, the underlying mechanisms remain unknown. To address this problem, we identified the inulin hydrolase in wild-type strain B. amyloliquefaciens NB. RESULTS The novel inulin hydrolase (CscA) was discovered from strain NB, with high inulinase activity (987.0 U/mg at 55 °C) and strong resistance at pH values between 8.0 and 11.0, suggesting the potential application of CscA in Jerusalem artichoke biorefinery. CscA exhibited a k cat/K m of (6.93 ± 0.27) × 103 for inulin; its enzymatic activity was stimulated by metal ions, like K+, Mn2+, or Ca2+. Similar to their role in glycoside hydrolase 32 family enzymes, the conserved Asp37, Asp161, and Glu215 residues of CscA contribute to its catalytic activity. Targeted disruption of CscA gene suppressed inulin utilization by strain NB. Overexpression of CscA significantly enhanced the γ-PGA generation by 19.2% through enhancement in inulin consumption. CONCLUSIONS The inulin hydrolase CscA is critical for inulin metabolism in B. amyloliquefaciens and indicates potential application in Jerusalem artichoke biorefinery.
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Affiliation(s)
- Yibin Qiu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, 211816 China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Yifan Zhu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, 211816 China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Yijing Zhan
- Nanjing Shineking Biotech Co., Ltd, Nanjing, 210061 China
| | - Yatao Zhang
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, 211816 China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Yuanyuan Sha
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, 211816 China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Yijing Zhan
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, 211816 China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Zongqi Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, 211816 China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Sha Li
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, 211816 China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Xiaohai Feng
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, 211816 China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
| | - Hong Xu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing, 211816 China
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing, 211816 China
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Multidisciplinary involvement and potential of thermophiles. Folia Microbiol (Praha) 2018; 64:389-406. [PMID: 30386965 DOI: 10.1007/s12223-018-0662-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2018] [Accepted: 10/25/2018] [Indexed: 12/15/2022]
Abstract
The full biotechnological exploitation of thermostable enzymes in industrial processes is necessary for their commercial interest and industrious value. The heat-tolerant and heat-resistant enzymes are a key for efficient and cost-effective translation of substrates into useful products for commercial applications. The thermophilic, hyperthermophilic, and microorganisms adapted to extreme temperatures (i.e., low-temperature lovers or psychrophiles) are a rich source of thermostable enzymes with broad-ranging thermal properties, which have structural and functional stability to underpin a variety of technologies. These enzymes are under scrutiny for their great biotechnological potential. Temperature is one of the most critical parameters that shape microorganisms and their biomolecules for stability under harsh environmental conditions. This review describes in detail the sources of thermophiles and thermostable enzymes from prokaryotes and eukaryotes (microbial cell factories). Furthermore, the review critically examines perspectives to improve modern biocatalysts, its production and performance aiming to increase their value for biotechnology through higher standards, specificity, resistance, lowing costs, etc. These thermostable and thermally adapted extremophilic enzymes have been used in a wide range of industries that span all six enzyme classes. Thus, in particular, target of this review paper is to show the possibility of both high-value-low-volume (e.g., fine-chemical synthesis) and low-value-high-volume by-products (e.g., fuels) by minimizing changes to current industrial processes.
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