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Li F, Li Q, Lv J, Huang M, Ling Z, Meng Y, Chen F, Ji Z. A novel seawater hydrothermal-deep eutectic solvent pretreatment enhances the production of fermentable sugars and tailored lignin nanospheres from Pinus massoniana. Int J Biol Macromol 2024; 267:131596. [PMID: 38621560 DOI: 10.1016/j.ijbiomac.2024.131596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 03/20/2024] [Accepted: 04/12/2024] [Indexed: 04/17/2024]
Abstract
Lignocellulose biorefinery depended on effective pretreatment strategies is of great significance for solving the current global crisis of ecosystem and energy security. This study proposes a novel approach combining seawater hydrothermal pretreatment (SHP) and microwave-assisted deep eutectic solvent (MD) pretreatment to achieve an effective fractionation of Pinus massoniana into high value-added products. The results indicated that complex ions (Mg2+, Ca2+, and Cl-) in natural seawater served as Lewis acids and dramatically promoted the depolymerization of mannose and xylan into oligosaccharides with 40.17 % and 75.43 % yields, respectively. Subsequent MD treatment realized a rapid and effective lignin fractionation (~90 %) while retaining cellulose. As a result, the integrated pretreatment yielded ~85 % of enzymatic glucose, indicating an eightfold increase compared with untreated pine. Because of the increased hydrophobicity induced by the formation of acyl groups during MD treatment, uniform lignin nanospheres were successfully recovered from the DES. It exhibited low dispersibility (PDI = 2.23), small molecular weight (1889 g/mol), and excellent oxidation resistance (RSI = 5.94), demonstrating promising applications in functional materials. The mechanism of lignin depolymerization was comprehensively elucidated via FTIR, 2D-HSQC NMR, and GPC analyses. Overall, this study provides a novel and environmentally friendly strategy for lignocellulose biorefinery and lignin valorization.
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Affiliation(s)
- Fucheng Li
- College of Marine Science and Bioengineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Qiang Li
- College of Marine Science and Bioengineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Jiachen Lv
- College of Marine Science and Bioengineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Mingjun Huang
- College of Marine Science and Bioengineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Zhe Ling
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yao Meng
- College of Marine Science and Bioengineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Fushan Chen
- College of Marine Science and Bioengineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Zhe Ji
- College of Marine Science and Bioengineering, Qingdao University of Science and Technology, Qingdao 266042, China.
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2
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Leadbeater DR, Bruce NC. Functional characterisation of a new halotolerant seawater active glycoside hydrolase family 6 cellobiohydrolase from a salt marsh. Sci Rep 2024; 14:3205. [PMID: 38332324 PMCID: PMC10853513 DOI: 10.1038/s41598-024-53886-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 02/06/2024] [Indexed: 02/10/2024] Open
Abstract
Realising a fully circular bioeconomy requires the valorisation of lignocellulosic biomass. Cellulose is the most attractive component of lignocellulose but depolymerisation is inefficient, expensive and resource intensive requiring substantial volumes of potable water. Seawater is an attractive prospective replacement, however seawater tolerant enzymes are required for the development of seawater-based biorefineries. Here, we report a halophilic cellobiohydrolase SMECel6A, identified and isolated from a salt marsh meta-exo-proteome dataset with high sequence divergence to previously characterised cellobiohydrolases. SMECel6A contains a glycoside hydrolase family 6 (GH6) domain and a carbohydrate binding module family 2 (CBM2) domain. Characterisation of recombinant SMECel6A revealed SMECel6A to be active upon crystalline and amorphous cellulose. Mono- and oligosaccharide product profiles revealed cellobiose as the major hydrolysis product confirming SMECel6A as a cellobiohydrolase. We show SMECel6A to be halophilic with optimal activity achieved in 0.5X seawater displaying 80.6 ± 6.93% activity in 1 × seawater. Structural predictions revealed similarity to a characterised halophilic cellobiohydrolase despite sharing only 57% sequence identity. Sequential thermocycling revealed SMECel6A had the ability to partially reversibly denature exclusively in seawater retaining significant activity. Our study confirms that salt marsh ecosystems harbour enzymes with attractive traits with biotechnological potential for implementation in ionic solution based bioprocessing systems.
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Affiliation(s)
- Daniel R Leadbeater
- Centre for Novel Agricultural Products, Department of Biology, University of York, Heslington, York, YO10 5DD, UK.
| | - Neil C Bruce
- Centre for Novel Agricultural Products, Department of Biology, University of York, Heslington, York, YO10 5DD, UK.
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3
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Shao Y, Chen J, Ding X, Lu W, Shen D, Long Y. Valorization of hexoses into 5-hydroxymethylfurfural and levulinic acid in acidic seawater under microwave hydrothermal conditions. ENVIRONMENTAL TECHNOLOGY 2022:1-10. [PMID: 36369796 DOI: 10.1080/09593330.2022.2143294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Accepted: 10/28/2022] [Indexed: 06/16/2023]
Abstract
Typical value-added platform chemicals 5-hydroxymethylfurfural (HMF) and levulinic acid (LA) can be obtained from hexoses under microwave hydrothermal (MHT) conditions. This study explored the detailed transformation process regarding the MHT products in acidic seawater obtained using glucose and fructose as raw materials. The facile conversion of fructose compared with glucose was mainly ascribed to their different activation energies (56.721 and 88.594 kJ mol-1, respectively). The HMF and LA product yields were strongly affected by the MHT temperature and holding time in two types of hexose solution. Undesirable humins were found to inevitably form under each set of reaction conditions. The carbon balance results for reactants and products showed that up to 60% of fructose carbon was converted into value-added chemicals, while 47% of glucose carbon underwent the same conversion in acidic seawater under the optimal MHT conditions. This study provides further knowledge regarding the role of microwave heating combined with acidic seawater in green chemistry and is a useful reference for the biorefinery industry.
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Affiliation(s)
- Yuchao Shao
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Instrumental Analysis Center, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, People's Republic of China
- School of Environment, Tsinghua University, Beijing, People's Republic of China
| | - Jiansong Chen
- Zhejiang Ecological and Environmental Monitoring Center, Hangzhou, People's Republic of China
| | - Xiaodong Ding
- Shangyu Yingtai Fine Chemical Co., Ltd., Shaoxing, People's Republic of China
| | - Wenjing Lu
- School of Environment, Tsinghua University, Beijing, People's Republic of China
| | - Dongsheng Shen
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Instrumental Analysis Center, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, People's Republic of China
| | - Yuyang Long
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Instrumental Analysis Center, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, People's Republic of China
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4
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Wu Y, Li X, Li F, Ling Z, Meng Y, Chen F, Ji Z. Promising seawater hydrothermal combining electro-assisted pretreatment for corn stover valorization within a biorefinery concept. BIORESOURCE TECHNOLOGY 2022; 351:127066. [PMID: 35351556 DOI: 10.1016/j.biortech.2022.127066] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/14/2022] [Revised: 03/21/2022] [Accepted: 03/23/2022] [Indexed: 06/14/2023]
Abstract
In this study, for the first time, seawater hydrothermal (SH) pretreatment combining subsequent electrogenerated alkaline hydrogen peroxide (EAHP) pretreatment was proposed to achieve an effective fractionation of corn stover into high value-added products. During SH pretreatment, complex ions in natural seawater (Mg2+, Ca2+ and Cl-) were used to promote depolymerization of xylan into xylo-oligosaccharides with 49.37% yield (190 °C,40 min), 18.52% higher than that of deionized water. Subsequent EAHP treatment not only provided a green and economical way to produce hydrogen peroxide but also synchronously realized satisfied delignification (94.91%). The integrated pretreatment resulted in 91.16% of glucose yield, which was about 5.6 times more than that of unpretreated corn stover. In addition, the recovered lignin fraction which has a potential application in functional materials were investigated by FTIR, 2D-HSQC NMR and GPC. In short, this work provided a novel and environmentally-friendly strategy for biorefinery-based fractionation of corn stover.
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Affiliation(s)
- Yue Wu
- College of Marine Science and Bioengineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Xinting Li
- College of Marine Science and Bioengineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Fucheng Li
- College of Marine Science and Bioengineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Zhe Ling
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yao Meng
- College of Marine Science and Bioengineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Fushan Chen
- College of Marine Science and Bioengineering, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Zhe Ji
- College of Marine Science and Bioengineering, Qingdao University of Science and Technology, Qingdao 266042, China.
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5
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Dev B, Bakshi A, Paramasivan B. Prospects of utilizing seawater as a reaction medium for pretreatment and saccharification of rice straw. CHEMOSPHERE 2022; 293:133528. [PMID: 34995624 DOI: 10.1016/j.chemosphere.2022.133528] [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: 09/12/2021] [Revised: 12/30/2021] [Accepted: 01/02/2022] [Indexed: 06/14/2023]
Abstract
The transition towards a bio-based economy has led to an unprecedented surge in fresh water consumption that renders biofuel a high water footprint product. The depleting fresh water resources have exacerbated the situation which necessitates the exploration of non-potable water for biorefinery purposes. In the current study, seawater is used as a plausible alternative reaction medium for pretreatment and saccharification of rice straw. Response Surface Methodology (RSM) based on Box-Behnken Design (BBD) was employed to model, predict and validate cellulose release and reducing sugar yield from rice straw subjected to microwave-NaOH pretreatment. The optimized pretreatment conditions were determined to be 8.54% substrate loading, 1.94% NaOH and 4.09 min which resulted in the maximum cellulose release of 65.43% and reducing sugar yield of 0.554 g/g. Several physico-chemical studies of the raw and pretreated biomass were carried out using bomb calorimetry, scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, Brunauer-Emmett-Teller (BET) analysis and thermal gravimetric analysis (TGA) to examine the efficacy of pretreatment. Evidences of an apparent delignification was substantiated by the increase in surface area from 7.719 to 44.188 m2 g-1and pore volume from 0.039 to 0.071 mlg-1 which was consistent with the decrease in energy density and distorted surface morphology of the pretreated biomass. Further, the FTIR revealed a reduced peak in the absorption spectral bands at 1636 cm-1 which confirmed the pretreatment mediated degradation of lignin and hemicellulose. This finding provides evidence on the prospects of utilizing abundantly available seawater resource as a reaction medium for sustainable biofuel production.
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Affiliation(s)
- Binita Dev
- Department of Life Science, National Institute of Technology Rourkela, Odisha, 769008, India
| | - Arindam Bakshi
- Department of Food Science and Human Nutrition, Iowa State University, Iowa, 50011, USA
| | - Balasubramanian Paramasivan
- Department of Biotechnology & Medical Engineering, National Institute of Technology Rourkela, 769008, Odisha, India.
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6
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Recent developments in the biology and biotechnological applications of halotolerant yeasts. World J Microbiol Biotechnol 2022; 38:27. [PMID: 34989905 DOI: 10.1007/s11274-021-03213-0] [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: 11/05/2021] [Accepted: 12/15/2021] [Indexed: 10/19/2022]
Abstract
Natural hypersaline environments are inhabited by an abundance of prokaryotic and eukaryotic microorganisms capable of thriving under extreme saline conditions. Yeasts represent a substantial fraction of halotolerant eukaryotic microbiomes and are frequently isolated as food contaminants and from solar salterns. During the last years, a handful of new species has been discovered in moderate saline environments, including estuarine and deep-sea waters. Although Saccharomyces cerevisiae is considered the primary osmoadaptation model system for studies of hyperosmotic stress conditions, our increasing understanding of the physiology and molecular biology of halotolerant yeasts provides new insights into their distinct metabolic traits and provides novel and innovative opportunities for genome mining of biotechnologically relevant genes. Yeast species such as Debaryomyces hansenii, Zygosaccharomyces rouxii, Hortaea werneckii and Wallemia ichthyophaga show unique properties, which make them attractive for biotechnological applications. Select halotolerant yeasts are used in food processing and contribute to aromas and taste, while certain gene clusters are used in second generation biofuel production. Finally, both pharmaceutical and chemical industries benefit from applications of halotolerant yeasts as biocatalysts. This comprehensive review summarizes the most recent findings related to the biology of industrially-important halotolerant yeasts and provides a detailed and up-to-date description of modern halotolerant yeast-based biotechnological applications.
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You S, Li J, Zhang F, Bai ZY, Shittu S, Herman RA, Zhang WX, Wang J. Loop engineering of a thermostable GH10 xylanase to improve low-temperature catalytic performance for better synergistic biomass-degrading abilities. BIORESOURCE TECHNOLOGY 2021; 342:125962. [PMID: 34563821 DOI: 10.1016/j.biortech.2021.125962] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2021] [Revised: 09/11/2021] [Accepted: 09/14/2021] [Indexed: 06/13/2023]
Abstract
Lignocellulosic biorefining for producing biofuels poses technical challenges. It is usually conducted over a long time using heat, making it energy intensive. In this study, we lowered the energy consumption of this process through an optimized enzyme and pretreatment strategy. First, the dominant mutant M137E/N269G of Bispora sp. MEY-1XYL10C_ΔN was obtained by directed evolution with highcatalytic efficiency (970 mL/s∙mg)and specific activity (2090 U/mg)at 37 °C, and thermostability was improved (T50 increased by5 °C). After pretreatment with seawater immersionfollowing steam explosion,bagasse was co-treated with cellulase and M137E/N269G under mild conditions (37 °C), the resulting highest yield of fermentable sugars reached 219 µmol/g of bagasse,46% higher than that of the non-seawater treatment group, with the highest degree of synergy of 2.0. Pretreatment with seawater following steam explosion and synergistic hydrolysis through high activity xylanase and cellulase helped to achieve low energy degradation of lignocellulosic biomass.
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Affiliation(s)
- Shuai You
- Jiangsu Key Laboratory of Sericutural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, PR China; Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu 212100, PR China
| | - Jing Li
- Department of Nephrology, Affiliated Hospital of Jiangsu University, Zhenjiang 212001, PR China
| | - Fang Zhang
- Jiangsu Key Laboratory of Sericutural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, PR China
| | - Zhi-Yuan Bai
- Jiangsu Key Laboratory of Sericutural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, PR China
| | - Saidi Shittu
- Jiangsu Key Laboratory of Sericutural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, PR China
| | - Richard-Ansah Herman
- Jiangsu Key Laboratory of Sericutural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, PR China
| | - Wen-Xin Zhang
- Jiangsu Key Laboratory of Sericutural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, PR China
| | - Jun Wang
- Jiangsu Key Laboratory of Sericutural Biology and Biotechnology, School of Biotechnology, Jiangsu University of Science and Technology, Zhenjiang, Jiangsu 212100, PR China; Key Laboratory of Silkworm and Mulberry Genetic Improvement, Ministry of Agriculture and Rural Affairs, Sericultural Research Institute, Chinese Academy of Agricultural Sciences, Zhenjiang, Jiangsu 212100, PR China.
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8
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A Preliminary Life Cycle Analysis of Bioethanol Production Using Seawater in a Coastal Biorefinery Setting. Processes (Basel) 2021. [DOI: 10.3390/pr9081399] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Bioethanol has many environmental and practical benefits as a transportation fuel. It is one of the best alternatives to replace fossil fuels due to its liquid nature, which is similar to the gasoline and diesel fuels traditionally used in transportation. In addition, bioethanol production technology has the capacity for negative carbon emissions, which is vital for solving the current global warming dilemma. However, conventional bioethanol production takes place based on an inland site and relies on freshwater and edible crops (or land suitable for edible crop production) for production, which has led to the food vs. fuel debate. Establishing a coastal marine biorefinery (CMB) system for bioethanol production that is based on coastal sites and relies on marine resources (seawater, marine biomass and marine yeast) could be the ultimate solution. In this paper, we aim to evaluate the environmental impact of using seawater for bioethanol production at coastal locations as a step toward the evaluation of a CMB system. Hence, a life cycle assessment for bioethanol production was conducted using the proposed scenario, named Coastal Seawater, and compared to the conventional scenario, named Inland Freshwater (IF). The impact of each scenario in relation to climate change, water depletion, land use and fossil depletion was studied for comparison. The Coastal Seawater scenario demonstrated an improvement upon the conventional scenario in all the selected impact categories. In particular, the use of seawater in the process had a significant effect on water depletion, showing an impact reduction of 31.2%. Furthermore, reductions were demonstrated in natural land transformation, climate change and fossil depletion of 5.5%, 3.5% and 4.2%, respectively. This indicates the positive impact of using seawater and coastal locations for bioethanol production and encourages research to investigate the CMB system.
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9
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de Jesus Fontes B, Kleingesinds EK, Giovanella P, Junior AP, Sette LD. Laccases produced by Peniophora from marine and terrestrial origin: A comparative study. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2021. [DOI: 10.1016/j.bcab.2021.102066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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10
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Pramanik S, Semenova MV, M Rozhkova A, Zorov IN, Korotkova O, Sinitsyn AP, Davari MD. An engineered cellobiohydrolase I for sustainable degradation of lignocellulosic biomass. Biotechnol Bioeng 2021; 118:4014-4027. [PMID: 34196389 DOI: 10.1002/bit.27877] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2021] [Revised: 05/29/2021] [Accepted: 06/20/2021] [Indexed: 11/11/2022]
Abstract
This study provides computational-assisted engineering of the cellobiohydrolase I (CBH-I) from Penicillium verruculosum with simultaneous enhanced thermostability and tolerance in ionic liquids, deep eutectic solvent, and concentrated seawater without affecting its wild-type activity. Engineered triple variant CBH-I R1 (A65R-G415R-S181F) showed 2.48-fold higher thermostability in terms of relative activity at 65°C after 1 h of incubation when compared with CBH-I wild type. CBH-I R1 exhibited 1.87-fold, 1.36-fold, and 1.57-fold higher specific activities compared with CBH-I wild type in [Bmim]Cl (50 g/L), [Ch]Cl (50 g/L), and two-fold concentrated seawater, respectively. In the multicellulases mixture, CBH-I R1 showed higher hydrolytic efficiency to hydrolyze aspen wood compared with CBH-I wild type in the buffer, [Bmim]Cl (50 g/L), and two-fold concentrated seawater, respectively. Structural analysis revealed a molecular basis for the higher stability of the CBH-I structure in which A65R and G415R substitutions form salt bridges (D64 … R65, E411 … R415) and S181F forms π-π interaction (Y155 … F181), leading to stabilize surface-exposed flexible α-helixes and loop in the multidomain β-jelly roll fold structure, respectively. In conclusion, the variant CBH-I R1 could enable efficient lignocellulosic biomass degradation as a cost-effective alternative for the sustainable production of biofuels and value-added chemicals.
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Affiliation(s)
- Subrata Pramanik
- Institute of Biotechnology, RWTH Aachen University, Aachen, Germany
| | - Margarita V Semenova
- Federal Research Centre "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, Russia
| | - Aleksandra M Rozhkova
- Federal Research Centre "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, Russia
| | - Ivan N Zorov
- Federal Research Centre "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, Russia.,Department of Chemistry, M. V. Lomonosov Moscow State University, Moscow, Russia
| | - Olga Korotkova
- Federal Research Centre "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, Russia
| | - Arkady P Sinitsyn
- Federal Research Centre "Fundamentals of Biotechnology", Russian Academy of Sciences, Moscow, Russia.,Department of Chemistry, M. V. Lomonosov Moscow State University, Moscow, Russia
| | - Mehdi D Davari
- Institute of Biotechnology, RWTH Aachen University, Aachen, Germany
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11
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Shao Y, Lu W, Meng Y, Zhou D, Zhou Y, Shen D, Long Y. The formation of 5-hydroxymethylfurfural and hydrochar during the valorization of biomass using a microwave hydrothermal method. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 755:142499. [PMID: 33039887 DOI: 10.1016/j.scitotenv.2020.142499] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 09/19/2020] [Accepted: 09/20/2020] [Indexed: 06/11/2023]
Abstract
5-Hydroxymethylfurfural (HMF) and levulinic acid (LA) are regarded as value-added platform chemicals that can be derived from biomass waste. However, humins are inevitably produced during valorization processes, reducing the product yields. Previous studies indicated that microwave heating combined with acidic seawater as a reaction medium promotes HMF formation. The present work therefore investigated the relationship between the production of HMF and LA in the liquid phase and that of insoluble humins (that is, hydrochar) under microwave heating in acidic seawater. The selectivities for HMF and LA were found to decrease as the reaction time was increased, as a result of hydrochar formation, and both dehydration and decarboxylation evidently dominated the production of hydrochar in succession. HMF evidently played the most important role in hydrochar formation, and was consumed approximately seven times more rapidly than either fructose or LA. The hydrochar formation mechanism reported herein may be applicable to other similar hydrothermal processes.
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Affiliation(s)
- Yuchao Shao
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Instrumental Analysis Center, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Wenjing Lu
- School of Environment, Tsinghua University, Beijing 100084, China
| | - Yanjun Meng
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Instrumental Analysis Center, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Dan Zhou
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Instrumental Analysis Center, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Ying Zhou
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Instrumental Analysis Center, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Dongsheng Shen
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Instrumental Analysis Center, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China
| | - Yuyang Long
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, Instrumental Analysis Center, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou 310012, China.
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12
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Zhang X, Zhang W, Lei F, Yang S, Jiang J. Coproduction of xylooligosaccharides and fermentable sugars from sugarcane bagasse by seawater hydrothermal pretreatment. BIORESOURCE TECHNOLOGY 2020; 309:123385. [PMID: 32325380 DOI: 10.1016/j.biortech.2020.123385] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 04/11/2020] [Accepted: 04/13/2020] [Indexed: 06/11/2023]
Abstract
In this study, natural seawater without additional chemicals was selected to treat sugarcane bagasse for the production of xylooligosaccharides and glucose. This pretreatment not only more effectively conserves freshwater resources than hydrothermal pretreatment and enzymatic hydrolysis, but also decreases corrosion of the equipment relative to techniques utilizing acid and alkaline pretreatment. The maximum yield of 67.12% xylooligosaccharides (of initial xylan), including 11.49% xylobiose, 16.23% xylotriose, 23.82% xylotetraose, and 15.58% xylopentaose was obtained under mild condition (175 °C for 30 min). Moreover, greater amounts of xylotetraose were generated during seawater hydrothermal pretreatment under all conditions, likely because NaCl in seawater cut the hydrogen bonds between xylo-oligomers. In addition, 94.69% cellulose digestibility and 78.58% xylan digestibility were achieved from the solid residue with an enzyme dosage of 30 FPU/g cellulose. Results indicated that seawater hydrothermal pretreatment is a more environmentally-friendly and sustainable technique for producing xylooligosaccharides and fermentable sugars than other methods.
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Affiliation(s)
- Xiankun Zhang
- Department of Chemistry and Chemical Engineering, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China
| | - Weiwei Zhang
- Department of Chemistry and Chemical Engineering, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China
| | - Fuhou Lei
- GuangXi Key Laboratory of Chemistry and Engineering of Forest Products, College of Chemistry and Chemical Engineering, Guangxi University for Nationalities, Nanning 530006, China
| | - Shujuan Yang
- Department of Chemistry and Chemical Engineering, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China
| | - Jianxin Jiang
- Department of Chemistry and Chemical Engineering, MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China.
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13
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Shao Y, Tsang DCW, Shen D, Zhou Y, Jin Z, Zhou D, Lu W, Long Y. Acidic seawater improved 5-hydroxymethylfurfural yield from sugarcane bagasse under microwave hydrothermal liquefaction. ENVIRONMENTAL RESEARCH 2020; 184:109340. [PMID: 32209494 DOI: 10.1016/j.envres.2020.109340] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 02/29/2020] [Accepted: 03/02/2020] [Indexed: 06/10/2023]
Abstract
5-Hydroxymethylfurfural (HMF) as value-added platform chemical can be derived from biomass. This study used microwave hydrothermal liquefaction (MHTL) to obtain HMF from sugarcane bagasse in acidic seawater conditions. The key processing parameters including temperature, reaction time, and liquid-to-solid ratio (L/S) were evaluated and optimized. The highest HMF yield of 8.1 wt% was obtained at 149 °C with a reaction time of 4 min and a L/S value of 12:1, respectively. This yield is considerable and even higher than the yield derived from sugarcane molasses under similar microwave conditions in the absence of seawater. Hence, acidic seawater was found to promote the hydrolysis of sugarcane bagasse to give HMF precursor (i.e. fructose and glucose), while simultaneously inhibiting the conversion of HMF to levulinic acid under MHTL conditions, possibly explaining the high HMF yield. This method presents a new and sustainable means of transforming waste biomass to valuable substances using seawater or brine wastewater.
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Affiliation(s)
- Yuchao Shao
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China
| | - Daniel C W Tsang
- Department of Civil and Environmental Engineering, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China
| | - Dongsheng Shen
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China
| | - Ying Zhou
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China
| | - Zhiyuan Jin
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China
| | - Dan Zhou
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China
| | - Wenjing Lu
- School of Environment, Tsinghua University, Beijing, 100084, China
| | - Yuyang Long
- Zhejiang Provincial Key Laboratory of Solid Waste Treatment and Recycling, School of Environmental Science and Engineering, Zhejiang Gongshang University, Hangzhou, 310012, China.
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14
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Kelly SA, Moody TS, Gilmore BF. Biocatalysis in seawater: Investigating a halotolerant ω-transaminase capable of converting furfural in a seawater reaction medium. Eng Life Sci 2019; 19:721-725. [PMID: 32624965 DOI: 10.1002/elsc.201900053] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Revised: 06/05/2019] [Accepted: 08/07/2019] [Indexed: 11/07/2022] Open
Abstract
The increasing demand for freshwater and the continued depletion of available resources has led to a deepening global water crisis. Significant water consumption required by many biotechnological processes contributes to both the environmental and economic cost of this problem. Relatively few biocatalytic processes have been developed to utilize the more abundant supply of seawater, with seawater composition and salinity limiting its use with many mesophilic enzymes. We recently reported a salt tolerant ω-transaminase enzyme, Ad2-TAm, isolated from the genome of a halophilic bacterium, Halomonas sp. CSM-2, from a Triassic period salt mine. In this study we aimed to demonstrate its applicability to biocatalytic reactions carried out in a seawater-based medium. Ad2-TAm was examined for its ability to aminate the industrially relevant substrate, furfural, in both seawater and freshwater-based reaction systems. Furfural was aminated with 53.6% conversion in a buffered seawater system, displaying improved function versus freshwater. Ad2-TAm outperformed the commonly employed commercial ω-TAms from Chromobacterium violaceum and Vibrio fluvialis, both of which showed decreased conversion in seawater. Given the increasingly precarious availability of global freshwater, such applications of enzymes from halophiles have the ability to reduce demand for freshwater in large-scale industrial processes, delivering considerable environmental and economic benefits.
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Affiliation(s)
| | - Thomas S Moody
- Almac Department of Biocatalysis & Isotope Chemistry Craigavon UK.,Arran Chemical Company Limited Athlone Roscommon Ireland
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15
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Tagliavia M, Salamone M, Bennici C, Quatrini P, Cuttitta A. A modified culture medium for improved isolation of marine vibrios. Microbiologyopen 2019; 8:e00835. [PMID: 31318499 PMCID: PMC6741135 DOI: 10.1002/mbo3.835] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2018] [Revised: 02/22/2019] [Accepted: 02/26/2019] [Indexed: 12/15/2022] Open
Abstract
Marine Vibrio members are of great interest for both ecological and biotechnological research, which often relies on their isolation. Whereas many efforts have been made for the detection of food‐borne pathogenic species, much less is known about the performances of standard culture media toward environmental vibrios. We show that the isolation/enumeration of marine vibrios using thiosulfate‐citrate‐bile salts‐sucrose agar (TCBS) as selective medium may be hampered by the variable adaptability of different taxa to the medium, which may result even in isolation failure and/or in substantial total count underestimation. We propose a modified TCBS as isolation medium, adjusted for marine vibrios requirements, which greatly improved their recovery in dilution plate counts, compared with the standard medium. The modified medium offers substantial advantages over TCBS, providing more accurate and likely estimations of the actual presence of vibrios. Modified TCBS allowed the recovery of otherwise undetected vibrios, some of which producing biotechnologically valuable enzymes, thus expanding the isolation power toward potentially new enzyme‐producers Vibrio taxa. Moreover, we report a newly designed Vibrio‐specific PCR primers pair, targeting a unique rpoD sequence, useful for rapid confirmation of isolates as Vibrio members and subsequent genetic analyses.
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Affiliation(s)
- Marcello Tagliavia
- IAS-CNR, Campobello di Mazara, Italy.,Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Palermo, Italy
| | | | | | - Paola Quatrini
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Palermo, Italy
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16
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Avoiding Conflicts between Future Freshwater Algae Production and Water Scarcity in the United States at the Energy-Water Nexus. WATER 2019. [DOI: 10.3390/w11040836] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Sustainable production of algae will depend on understanding trade-offs at the energy-water nexus. Algal biofuels promise to improve the environmental sustainability profile of renewable energy along most dimensions. In this assessment of potential US freshwater production, we assumed sustainable production along the carbon dimension by simulating placement of open ponds away from high-carbon-stock lands (forest, grassland, and wetland) and near sources of waste CO 2 . Along the water dimension, we quantified trade-offs between water scarcity and production for an ‘upstream’ indicator (measuring minimum water supply) and a ‘downstream’ indicator (measuring impacts on rivers). For the upstream indicator, we developed a visualization tool to evaluate algae production for different thresholds for water surplus. We hypothesized that maintaining a minimum seasonal water surplus would also protect river habitat for aquatic biota. Our study confirmed that ensuring surplus water also reduced the duration of low-flow events, but only above a threshold. We also observed a trade-off between algal production and the duration of low-flow events in streams. These results can help to guide the choice of basin-specific sustainability targets to avoid conflicts with competing water users at this energy-water nexus. Where conflicts emerge, alternative water sources or enclosed photobioreactors may be needed for algae cultivation.
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17
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Serra I, Capusoni C, Molinari F, Musso L, Pellegrino L, Compagno C. Marine Microorganisms for Biocatalysis: Selective Hydrolysis of Nitriles with a Salt-Resistant Strain of Meyerozyma guilliermondii. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2019; 21:229-239. [PMID: 30684102 DOI: 10.1007/s10126-019-09875-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Accepted: 01/07/2019] [Indexed: 06/09/2023]
Abstract
A screening among marine yeasts was carried out for nitrile hydrolyzing activity. Meyerozyma guilliermondii LM2 (UBOCC-A-214008) was able to efficiently grow on benzonitrile and cyclohexanecarbonitrile (CECN) as sole nitrogen sources. A two-step one-pot method for obtaining cells of M. guilliermondii LM2 (UBOCC-A-214008) endowed with high nitrilase activity was established; the resulting whole cells converted different nitriles with high molar conversions and showed interesting enantioselectivity toward racemic substrates. Nitrilase from M. guilliermondii LM2 (UBOCC-A-214008) displayed high activity on aromatic substrates, but also arylaliphatic and aliphatic substrates were accepted. Salt-resistant M. guilliermondii LM2 (UBOCC-A-214008) was used in media with different salinity, being highly active up to 1.5 M NaCl concentration. Finally, hydrolysis of nitriles was efficiently performed using a bioprocess (yeast growth and biotransformation with resting cells) entirely carried out in seawater.
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Affiliation(s)
- Immacolata Serra
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Via L. Mangiagalli 25, Milan, Italy.
| | - Claudia Capusoni
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Via L. Mangiagalli 25, Milan, Italy
| | - Francesco Molinari
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Via L. Mangiagalli 25, Milan, Italy
| | - Loana Musso
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Via L. Mangiagalli 25, Milan, Italy
| | - Luisa Pellegrino
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Via L. Mangiagalli 25, Milan, Italy
| | - Concetta Compagno
- Department of Food, Environmental and Nutritional Sciences (DeFENS), University of Milan, Via L. Mangiagalli 25, Milan, Italy
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18
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Capusoni C, Arioli S, Donzella S, Guidi B, Serra I, Compagno C. Hyper-Osmotic Stress Elicits Membrane Depolarization and Decreased Permeability in Halotolerant Marine Debaryomyces hansenii Strains and in Saccharomyces cerevisiae. Front Microbiol 2019; 10:64. [PMID: 30761110 PMCID: PMC6362939 DOI: 10.3389/fmicb.2019.00064] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2018] [Accepted: 01/15/2019] [Indexed: 01/07/2023] Open
Abstract
The use of seawater and marine microorganisms can represent a sustainable alternative to avoid large consumption of freshwater performing industrial bioprocesses. Debaryomyces hansenii, which is a known halotolerant yeast, possess metabolic traits appealing for developing such processes. For this purpose, we studied salt stress exposure of two D. hansenii strains isolated from marine fauna. We found that the presence of sea salts during the cultivation results in a slight decrease of biomass yields. Nevertheless, higher concentration of NaCl (2 M) negatively affects other growth parameters, like growth rate and glucose consumption rate. To maintain an isosmotic condition, the cells accumulate glycerol as compatible solute. Flow cytometry analysis revealed that the osmotic adaptation causes a reduced cellular permeability to cell-permeant dye SYBR Green I. We demonstrate that this fast and reversible phenomenon is correlated to the induction of membrane depolarization, and occurred even in presence of high concentration of sorbitol. The decrease of membrane permeability induced by osmotic stress confers to D. hansenii resistance to cationic drugs like Hygromycin B. In addition, we describe that also in Saccharomyces cerevisiae the exposure to hyper-osmotic conditions induced membrane depolarization and reduced the membrane permeability. These aspects are very relevant for the optimization of industrial bioprocesses, as in the case of fermentations and bioconversions carried out by using media/buffers containing high nutrients/salts concentrations. Indeed, an efficient transport of molecules (nutrients, substrates, and products) is the prerequisite for an efficient cellular performance, and ultimately for the efficiency of the industrial process.
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Affiliation(s)
- Claudia Capusoni
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - Stefania Arioli
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - Silvia Donzella
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - Benedetta Guidi
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - Immacolata Serra
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
| | - Concetta Compagno
- Department of Food, Environmental and Nutritional Sciences, University of Milan, Milan, Italy
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19
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Carvalho DRD, Carli S, Meleiro LP, Rosa JC, Oliveira AHCD, Jorge JA, Furriel RPM. A halotolerant bifunctional β-xylosidase/α-l-arabinofuranosidase from Colletotrichum graminicola: Purification and biochemical characterization. Int J Biol Macromol 2018; 114:741-750. [DOI: 10.1016/j.ijbiomac.2018.03.111] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Revised: 03/19/2018] [Accepted: 03/21/2018] [Indexed: 01/09/2023]
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20
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Fang C, Thomsen MH, Frankær CG, Bastidas-Oyanedel JR, Brudecki GP, Schmidt JE. Factors affecting seawater-based pretreatment of lignocellulosic date palm residues. BIORESOURCE TECHNOLOGY 2017; 245:540-548. [PMID: 28898854 DOI: 10.1016/j.biortech.2017.08.184] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/18/2017] [Revised: 08/24/2017] [Accepted: 08/29/2017] [Indexed: 06/07/2023]
Abstract
Seawater-based pretreatment of lignocellulosic biomass is an innovative process at research stage. With respect to process optimization, factors affecting seawater-based pretreatment of lignocellulosic date palm residues were studied for the first time in this paper. Pretreatment temperature (180°C-210°C), salinity of seawater (0ppt-50ppt), and catalysts (H2SO4, Na2CO3, and NaOH) were investigated. The results showed that pretreatment temperature exerted the largest influence on seawater-based pretreatment in terms of the enzymatic digestibility and fermentability of pretreated solids, and the inhibition of pretreatment liquids to Saccharomyces cerevisiae. Salinity showed the least impact to seawater-based pretreatment, which widens the application spectrum of saline water sources such as brines discharged in desalination plant. Sulfuric acid was the most effective catalyst for seawater-based pretreatment compared with Na2CO3 and NaOH.
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Affiliation(s)
- Chuanji Fang
- Department of Chemical and Environmental Engineering, Khalifa University of Science and Technology, Masdar Institute, Masdar City, P.O. Box 54224, Abu Dhabi, United Arab Emirates
| | - Mette Hedegaard Thomsen
- Department of Energy Technology, Aalborg University, Niels Bohrsvej 8, DK-6700 Esbjerg, Denmark
| | | | - Juan-Rodrigo Bastidas-Oyanedel
- Department of Chemical and Environmental Engineering, Khalifa University of Science and Technology, Masdar Institute, Masdar City, P.O. Box 54224, Abu Dhabi, United Arab Emirates.
| | - Grzegorz P Brudecki
- Department of Chemical and Environmental Engineering, Khalifa University of Science and Technology, Masdar Institute, Masdar City, P.O. Box 54224, Abu Dhabi, United Arab Emirates
| | - Jens Ejbye Schmidt
- Department of Chemical and Environmental Engineering, Khalifa University of Science and Technology, Masdar Institute, Masdar City, P.O. Box 54224, Abu Dhabi, United Arab Emirates.
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21
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Ben Hmad I, Boudabbous M, Belghith H, Gargouri A. A novel ionic liquid-stable halophilic endoglucanase from Stachybotrys microspora. Process Biochem 2017. [DOI: 10.1016/j.procbio.2017.01.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
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22
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Serra I, Guidi B, Burgaud G, Contente ML, Ferraboschi P, Pinto A, Compagno C, Molinari F, Romano D. Seawater-Based Biocatalytic Strategy: Stereoselective Reductions of Ketones with Marine Yeasts. ChemCatChem 2016. [DOI: 10.1002/cctc.201600947] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Immacolata Serra
- Department of Food, Environmental and Nutritional Science (DeFENS); University of Milan; via Mangiagalli 25 20133 Milan Italy
| | - Benedetta Guidi
- Department of Medical Biotechnology and Translational Medicine; University of Milan; Via Saldini 50 20133 Milan Italy
| | - Gaetan Burgaud
- Laboratoire Universitaire de Biodiversité et Ecologie Microbienne; Université de Brest; 29280 Plouzane France
| | - Martina L. Contente
- Department of Food, Environmental and Nutritional Science (DeFENS); University of Milan; via Mangiagalli 25 20133 Milan Italy
| | - Patrizia Ferraboschi
- Department of Medical Biotechnology and Translational Medicine; University of Milan; Via Saldini 50 20133 Milan Italy
| | - Andrea Pinto
- Department of Pharmaceutical Sciences (DISFARM); University of Milan; Via Mangiagalli 25 20133 Milan Italy
| | - Concetta Compagno
- Department of Food, Environmental and Nutritional Science (DeFENS); University of Milan; via Mangiagalli 25 20133 Milan Italy
| | - Francesco Molinari
- Department of Food, Environmental and Nutritional Science (DeFENS); University of Milan; via Mangiagalli 25 20133 Milan Italy
| | - Diego Romano
- Department of Food, Environmental and Nutritional Science (DeFENS); University of Milan; via Mangiagalli 25 20133 Milan Italy
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23
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Bastidas-Oyanedel JR, Fang C, Almardeai S, Javid U, Yousuf A, Schmidt JE. Waste biorefinery in arid/semi-arid regions. BIORESOURCE TECHNOLOGY 2016; 215:21-28. [PMID: 27072789 DOI: 10.1016/j.biortech.2016.04.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2016] [Revised: 04/01/2016] [Accepted: 04/02/2016] [Indexed: 05/12/2023]
Abstract
The utilization of waste biorefineries in arid/semi-arid regions is advisable due to the reduced sustainable resources in arid/semi-arid regions, e.g. fresh water and biomass. This review focuses on biomass residues available in arid/semi-arid regions, palm trees residues, seawater biomass based residues (coastal arid/semi-arid regions), and the organic fraction of municipal solid waste. The present review aims to describe and discuss the availability of these waste biomasses, their conversion to value chemicals by waste biorefinery processes. For the case of seawater biomass based residues it was reviewed and advise the use of seawater in the biorefinery processes, in order to decrease the use of fresh water.
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Affiliation(s)
- Juan-Rodrigo Bastidas-Oyanedel
- Institute Center for Energy - iEnergy, Masdar Institute of Science and Technology, PO Box 54224, Abu Dhabi, United Arab Emirates
| | - Chuanji Fang
- Institute Center for Energy - iEnergy, Masdar Institute of Science and Technology, PO Box 54224, Abu Dhabi, United Arab Emirates
| | - Saleha Almardeai
- Institute Center for Energy - iEnergy, Masdar Institute of Science and Technology, PO Box 54224, Abu Dhabi, United Arab Emirates
| | - Usama Javid
- Institute Center for Energy - iEnergy, Masdar Institute of Science and Technology, PO Box 54224, Abu Dhabi, United Arab Emirates
| | - Ahasa Yousuf
- Institute Center for Energy - iEnergy, Masdar Institute of Science and Technology, PO Box 54224, Abu Dhabi, United Arab Emirates
| | - Jens Ejbye Schmidt
- Institute Center for Energy - iEnergy, Masdar Institute of Science and Technology, PO Box 54224, Abu Dhabi, United Arab Emirates.
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24
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Patel I, Kracher D, Ma S, Garajova S, Haon M, Faulds CB, Berrin JG, Ludwig R, Record E. Salt-responsive lytic polysaccharide monooxygenases from the mangrove fungus Pestalotiopsis sp. NCi6. BIOTECHNOLOGY FOR BIOFUELS 2016; 9:108. [PMID: 27213015 PMCID: PMC4875668 DOI: 10.1186/s13068-016-0520-3] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2016] [Accepted: 05/06/2016] [Indexed: 05/15/2023]
Abstract
BACKGROUND Lytic polysaccharide monooxygenases (LPMOs) belong to the "auxiliary activities (AA)" enzyme class of the CAZy database. They are known to strongly improve the saccharification process and boost soluble sugar yields from lignocellulosic biomass, which is a key step in the efficient production of sustainable economic biofuels. To date, most LPMOs have been characterized from terrestrial fungi, but novel fungal LPMOs isolated from more extreme environments such as an estuary mangrove ecosystem could offer enzymes with unique properties in terms of salt tolerance and higher stability under harsh condition. RESULTS Two LPMOs secreted by the mangrove-associated fungus Pestalotiopsis sp. NCi6 (PsLPMOA and PsLPMOB) were expressed in the yeast Pichia pastoris and produced in a bioreactor with >85 mg L(-1) for PsLPMOA and >260 mg L(-1) for PsLPMOB. Structure-guided homology modeling of the PsLPMOs showed a high abundance of negative surface charges, enabling enhanced protein stability and activity in the presence of sea salt. Both PsLPMOs were activated by a cellobiose dehydrogenase (CDH) from Neurospora crassa, with an apparent optimum of interaction at pH 5.5. Investigation into their regioselective mode of action revealed that PsLPMOA released C1- and C4-oxidized cello-oligosaccharide products, while PsLPMOB released only C4-oxidized products. PsLPMOA was found to cleave polymeric cellulose in the presence of up to 6 % sea salt, which emphasizes the use of sea water in the industrial saccharification process with improved ecological footprints. CONCLUSIONS Two new LPMOs from the mangrove fungus Pestalotiopsis sp. NCi6 were found to be fully reactive against cellulose. The combined hydrolytic activities of these salt-responsive LPMOs could therefore facilitate the saccharification process using sea water as a reaction medium for large-scale biorefineries.
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Affiliation(s)
- Ilabahen Patel
- />INRA, UMR1163 Biodiversité et Biotechnologie Fongiques, Aix-Marseille Université, Polytech Marseille, 163 Avenue de Luminy, CP 925, 13288 Marseille Cedex 09, France
- />UMR1163 Biodiversité et Biotechnologie Fongiques, Faculté des Sciences de Luminy-Polytech Marseille, Aix-Marseille Université, 163 Avenue de Luminy, CP 925, 13288 Marseille Cedex 09, France
| | - Daniel Kracher
- />Department of Food Sciences and Technology, Food Biotechnology Laboratory, BOKU-University of Natural Resources and Life Sciences, Muthgasse 18, Vienna, 1190 Austria
| | - Su Ma
- />Department of Food Sciences and Technology, Food Biotechnology Laboratory, BOKU-University of Natural Resources and Life Sciences, Muthgasse 18, Vienna, 1190 Austria
| | - Sona Garajova
- />INRA, UMR1163 Biodiversité et Biotechnologie Fongiques, Aix-Marseille Université, Polytech Marseille, 163 Avenue de Luminy, CP 925, 13288 Marseille Cedex 09, France
- />UMR1163 Biodiversité et Biotechnologie Fongiques, Faculté des Sciences de Luminy-Polytech Marseille, Aix-Marseille Université, 163 Avenue de Luminy, CP 925, 13288 Marseille Cedex 09, France
| | - Mireille Haon
- />INRA, UMR1163 Biodiversité et Biotechnologie Fongiques, Aix-Marseille Université, Polytech Marseille, 163 Avenue de Luminy, CP 925, 13288 Marseille Cedex 09, France
- />UMR1163 Biodiversité et Biotechnologie Fongiques, Faculté des Sciences de Luminy-Polytech Marseille, Aix-Marseille Université, 163 Avenue de Luminy, CP 925, 13288 Marseille Cedex 09, France
| | - Craig B. Faulds
- />INRA, UMR1163 Biodiversité et Biotechnologie Fongiques, Aix-Marseille Université, Polytech Marseille, 163 Avenue de Luminy, CP 925, 13288 Marseille Cedex 09, France
- />UMR1163 Biodiversité et Biotechnologie Fongiques, Faculté des Sciences de Luminy-Polytech Marseille, Aix-Marseille Université, 163 Avenue de Luminy, CP 925, 13288 Marseille Cedex 09, France
| | - Jean-Guy Berrin
- />INRA, UMR1163 Biodiversité et Biotechnologie Fongiques, Aix-Marseille Université, Polytech Marseille, 163 Avenue de Luminy, CP 925, 13288 Marseille Cedex 09, France
- />UMR1163 Biodiversité et Biotechnologie Fongiques, Faculté des Sciences de Luminy-Polytech Marseille, Aix-Marseille Université, 163 Avenue de Luminy, CP 925, 13288 Marseille Cedex 09, France
| | - Roland Ludwig
- />Department of Food Sciences and Technology, Food Biotechnology Laboratory, BOKU-University of Natural Resources and Life Sciences, Muthgasse 18, Vienna, 1190 Austria
| | - Eric Record
- />INRA, UMR1163 Biodiversité et Biotechnologie Fongiques, Aix-Marseille Université, Polytech Marseille, 163 Avenue de Luminy, CP 925, 13288 Marseille Cedex 09, France
- />UMR1163 Biodiversité et Biotechnologie Fongiques, Faculté des Sciences de Luminy-Polytech Marseille, Aix-Marseille Université, 163 Avenue de Luminy, CP 925, 13288 Marseille Cedex 09, France
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25
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Fang C, Thomsen MH, Brudecki GP, Cybulska I, Frankaer CG, Bastidas-Oyanedel JR, Schmidt JE. Seawater as Alternative to Freshwater in Pretreatment of Date Palm Residues for Bioethanol Production in Coastal and/or Arid Areas. CHEMSUSCHEM 2015; 8:3823-3831. [PMID: 26487350 DOI: 10.1002/cssc.201501116] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Indexed: 06/05/2023]
Abstract
The large water consumption (1.9-5.9 m(3) water per m(3) of biofuel) required by biomass processing plants has become an emerging concern, which is particularly critical in arid/semiarid regions. Seawater, as a widely available water source, could be an interesting option. This work was to study the technical feasibility of using seawater to replace freshwater in the pretreatment of date palm leaflets, a lignocellulosic biomass from arid regions, for bioethanol production. It was shown that leaflets pretreated with seawater exhibited lower cellulose crystallinity than those pretreated with freshwater. Pretreatment with seawater produced comparably digestible and fermentable solids to those obtained with freshwater. Moreover, no significant difference of inhibition to Saccharomyces cerevisiae was observed between liquids from pretreatment with seawater and freshwater. The results showed that seawater could be a promising alternative to freshwater for lignocellulose biorefineries in coastal and/or arid/semiarid areas.
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Affiliation(s)
- Chuanji Fang
- Institute Center for Energy (iEnergy), Department of Chemical and Environmental Engineering, Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates
| | - Mette Hedegaard Thomsen
- Institute Center for Energy (iEnergy), Department of Chemical and Environmental Engineering, Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates
| | - Grzegorz P Brudecki
- Institute Center for Energy (iEnergy), Department of Chemical and Environmental Engineering, Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates
| | - Iwona Cybulska
- Institute Center for Energy (iEnergy), Department of Chemical and Environmental Engineering, Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates
| | | | - Juan-Rodrigo Bastidas-Oyanedel
- Institute Center for Energy (iEnergy), Department of Chemical and Environmental Engineering, Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates
| | - Jens Ejbye Schmidt
- Institute Center for Energy (iEnergy), Department of Chemical and Environmental Engineering, Masdar Institute of Science and Technology, P.O. Box 54224, Abu Dhabi, United Arab Emirates.
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Zambelli P, Serra I, Fernandez-Arrojo L, Plou FJ, Tamborini L, Conti P, Contente ML, Molinari F, Romano D. Sweet-and-salty biocatalysis: Fructooligosaccharides production using Cladosporium cladosporioides in seawater. Process Biochem 2015. [DOI: 10.1016/j.procbio.2015.04.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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De Vitis V, Guidi B, Contente ML, Granato T, Conti P, Molinari F, Crotti E, Mapelli F, Borin S, Daffonchio D, Romano D. Marine microorganisms as source of stereoselective esterases and ketoreductases: kinetic resolution of a prostaglandin intermediate. MARINE BIOTECHNOLOGY (NEW YORK, N.Y.) 2015; 17:144-152. [PMID: 25266054 DOI: 10.1007/s10126-014-9602-z] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2014] [Accepted: 08/08/2014] [Indexed: 06/03/2023]
Abstract
A screening among bacterial strains isolated from water-brine interface of the deep hypersaline anoxic basins (DHABs) of the Eastern Mediterranean was carried out for the biocatalytical resolution of racemic propyl ester of anti-2-oxotricyclo[2.2.1.0]heptan-7-carboxylic acid (R,S)-1, a key intermediate for the synthesis of D-cloprostenol. Bacillus horneckiae 15A gave highly stereoselective reduction of (R,S)-1, whereas Halomonas aquamarina 9B enantioselectively hydrolysed (R,S)-1; in both cases, enantiomerically pure unreacted (R)-1 could be easily recovered and purified at molar conversion below 57-58%, showing the potential of DHAB extremophile microbiome and marine-derived enzymes in stereoselective biocatalysis.
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Affiliation(s)
- Valerio De Vitis
- Department of Food Environmental and Nutritional Sciences (DEFENS), University of Milan, via Mangiagalli 25, 20133, Milan, Italy
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28
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Hongsiri W, Danon B, Jong WD. Kinetic Study on the Dilute Acidic Dehydration of Pentoses toward Furfural in Seawater. Ind Eng Chem Res 2014. [DOI: 10.1021/ie404374y] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Wijittra Hongsiri
- Delft University of Technology, Process and Energy Department, Leeghwaterstraat 44, 2628 CA, Delft, The Netherlands
| | - Bart Danon
- Delft University of Technology, Process and Energy Department, Leeghwaterstraat 44, 2628 CA, Delft, The Netherlands
| | - Wiebren de Jong
- Delft University of Technology, Process and Energy Department, Leeghwaterstraat 44, 2628 CA, Delft, The Netherlands
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