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Mikulski D, Kłosowski G. High-pressure microwave-assisted pretreatment of softwood, hardwood and non-wood biomass using different solvents in the production of cellulosic ethanol. BIOTECHNOLOGY FOR BIOFUELS AND BIOPRODUCTS 2023; 16:19. [PMID: 36750940 PMCID: PMC9906915 DOI: 10.1186/s13068-023-02272-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Accepted: 01/29/2023] [Indexed: 02/09/2023]
Abstract
BACKGROUND Pretreatment is an indispensable stage of the preparation of lignocellulosic biomass with key significance for the effectiveness of hydrolysis and the efficiency of the production of cellulosic ethanol. A significant increase in the susceptibility of the raw material to further degradation can be attained as a result of effective delignification in high-pressure conditions. With this in mind, a method of high-pressure pretreatment using microwave radiation and various solvents (water, 40% w/v NaCS, 1% v/v H2SO4, 1% w/v NaOH or 60% v/v EtOH with an addition of 1% v/v H2SO4) was developed, enabling the acquisition of biomass with an increased susceptibility to the process of enzymatic hydrolysis. The medium obtained in this way can be used for the production of cellulosic ethanol via high-gravity technology (lignocellulosic media containing from 15 to 20% dry weight of biomass). For every type of biomass (pine chips, beech chips and wheat straw), a solvent was selected to be used during the pretreatment, guaranteeing the acquisition of a medium highly susceptible to the process of enzymatic hydrolysis. RESULTS The highest efficiency of the hydrolysis of biomass, amounting to 71.14 ± 0.97% (glucose concentration 109.26 ± 3.49 g/L) was achieved for wheat straw subjected to microwave-assisted pretreatment using 40% w/v NaCS. Fermentation of this medium produced ethanol concentration at the level of 53.84 ± 1.25 g/L. A slightly lower effectiveness of enzymatic hydrolysis (62.21 ± 0.62%) was achieved after high-pressure microwave-assisted pretreatment of beech chips using 1% w/v NaOH. The hydrolysate contained glucose in the concentration of 91.78 ± 1.91 g/L, and the acquired concentration of ethanol after fermentation amounted to 49.07 ± 2.06 g/L. In the case of pine chips, the most effective delignification was achieved using 60% v/v EtOH with the addition of 1% v/v H2SO4, but after enzymatic hydrolysis, the concentration of glucose in hydrolysate was lower than in the other raw materials and amounted to 39.15 ± 1.62 g/L (the concentration of ethanol after fermentation was ca. 19.67 ± 0.98 g/L). The presence of xylose and galactose was also determined in the obtained fermentation media. The highest initial concentration of these carbohydrates (21.39 ± 1.44 g/L) was observed in beech chips media after microwave-assisted pretreatment using NaOH. The use of wheat straw after pretreatment using EtOH with an addition of 1% v/v H2SO4 for the preparation of fermentation medium, results in the generation of the initial concentration of galactose and xylose at the level of 19.03 ± 0.38 g/L. CONCLUSION The achieved results indicate a high effectiveness of the enzymatic hydrolysis of the biomass subjected to high-pressure microwave-assisted pretreatment. The final effect depends on the combined use of correctly selected solvents for the different sources of lignocellulosic biomass. On the basis of the achieved results, we can say that the presented method indicates a very high potential in the area of its use for the production of cellulosic ethanol involving high-gravity technology.
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Affiliation(s)
- Dawid Mikulski
- grid.412085.a0000 0001 1013 6065Faculty of Natural Science, Department of Biotechnology, Kazimierz Wielki University, Ul. K. J. Poniatowskiego 12, 85-671 Bydgoszcz, Poland
| | - Grzegorz Kłosowski
- Faculty of Natural Science, Department of Biotechnology, Kazimierz Wielki University, Ul. K. J. Poniatowskiego 12, 85-671, Bydgoszcz, Poland.
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WANG B, ZHONG Z, HOU Y, Zhao X, ZHANG P, WEI J, LI X, MENG L, QIU L. Biomanufacturing of food-grade citric acid and comprehensive utilization of its production wastewater. FOOD SCIENCE AND TECHNOLOGY 2023. [DOI: 10.1590/fst.110422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Baoshi WANG
- Henan Agricultural University, China; Henan Institute of Science and Technology, China; Henan Institute of Science and Technology, China
| | - Zhiyi ZHONG
- Henan Institute of Science and Technology, China
| | - Yaozong HOU
- Henan Institute of Science and Technology, China
| | - Xiuxiu Zhao
- Henan Institute of Science and Technology, China
| | - Peiran ZHANG
- Henan Institute of Science and Technology, China
| | | | - Xiaoyue LI
- Henan Institute of Science and Technology, China
| | - Li MENG
- Henan Agricultural University, China; Henan Institute of Science and Technology, China
| | - Liyou QIU
- Henan Agricultural University, China
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3
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Saha BC, Kennedy GJ, Bowman MJ, Qureshi N, Nichols NN. Itaconic acid production by Aspergillus terreus from glucose up to pilot scale and from corn stover and wheat straw hydrolysates using new manganese tolerant medium. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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4
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Vancov T, Palmer J, Keen B. Pilot scale demonstration of a two-stage pretreatment and bioethanol fermentation process for cotton gin trash. BIORESOURCE TECHNOLOGY 2021; 335:125224. [PMID: 33984554 DOI: 10.1016/j.biortech.2021.125224] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/21/2021] [Accepted: 04/23/2021] [Indexed: 06/12/2023]
Abstract
A two-stage dilute acid and steam explosion (SE) pretreatment process was developed and evaluated at pilot scale for ethanol production from cotton gin trash (CGT). Optimal conditions for CGT processing were defined as 1:6 solids to liquids ratio with 9% H2SO4 wt. on solids at 180 °C for 15 min. during stage 1 with ensuing pressed fibres successively exposed to SE at 200 °C for 5 min during stage 2. SE fibres were highly acquiescent to enzyme hydrolysis (76%) in the presence of PEG 6000, yielding 381 g glucose kg-1 fibre. Simultaneous saccharification and fermentation (SSF) trials validated the selected process option and additional fed-batch SSFs confirmed titres above the minimum 4% ww-1 benchmark for economically viable distillation. The practicality of converting CGT to ethanol was demonstrated at pilot scale with titres above 4% ww-1 and a conversion efficiency of 60% t-1 dry GCT.
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Affiliation(s)
- T Vancov
- NSW Department of Primary Industries, Elizabeth Macarthur Agricultural Institute, NSW, Australia.
| | - J Palmer
- NSW Department of Primary Industries, Wollongbar Primary Industries Institute, NSW, Australia
| | - B Keen
- NSW Department of Primary Industries, Wollongbar Primary Industries Institute, NSW, Australia
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Bachmann M, Kätelhön A, Winter B, Meys R, Müller LJ, Bardow A. Renewable carbon feedstock for polymers: environmental benefits from synergistic use of biomass and CO 2. Faraday Discuss 2021; 230:227-246. [PMID: 33889872 DOI: 10.1039/d0fd00134a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polymer production is a major source of greenhouse gas (GHG) emissions. To reduce GHG emissions, the polymer industry needs to shift towards renewable carbon feedstocks such as biomass and CO2. Both feedstocks have been shown to reduce GHG emissions in polymer production, however often at the expense of increased utilization of the limited resources biomass and renewable electricity. Here, we explore synergetic effects between biomass and CO2 utilization to reduce both GHG emissions and renewable resource use. For this purpose, we use life cycle assessment (LCA) to quantify the environmental benefits of the combined utilization of biomass and CO2 in the polyurethane supply chain. Our results show that the combined utilization reduces GHG emissions by 13% more than the individual utilization of either biomass or CO2. The synergies between bio- and CO2-based production save about 25% of the limited resources biomass and renewable electricity. The synergistic use of biomass and CO2 also reduces burden shifting from climate change to other environmental impacts, e.g., metal depletion or land use. Our results show how the combined utilization of biomass and CO2 in polymer supply chains reduces both GHG emissions and resource use by exploiting synergies between the feedstocks.
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Affiliation(s)
- Marvin Bachmann
- Institute of Technical Thermodynamics, RWTH Aachen University, 52062 Aachen, Germany
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6
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Kim D, Yoo CG, Schwarz J, Dhekney S, Kozak R, Laufer C, Ferrier D, Mackay S, Ashcraft M, Williams R, Kim S. Effect of lignin-blocking agent on enzyme hydrolysis of acid pretreated hemp waste. RSC Adv 2021; 11:22025-22033. [PMID: 35480814 PMCID: PMC9034124 DOI: 10.1039/d1ra03412j] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 06/06/2021] [Indexed: 01/07/2023] Open
Abstract
Hemp wastes (stems and branches), fractionated after hemp flower extraction for the production of cannabidiol oil, were utilized as a potentially renewable resource for the sugar flatform process. Hydrolysis of cellulose from the acid pretreated hemp biomass using a commercial enzyme was tested and evaluated for its chemical composition, morphological change, and sugar recovery. Acid pretreated hemp stems and branches, containing 1% glucan (w/v) solids, were hydrolyzed for 72 h using 25 mg enzyme protein per g glucan. A 54% glucose conversion was achieved from the treated branches versus a 71% yield from the treated stems. Raw branches and stems yielded 35% and 38% glucose, respectively. Further tests with a lignin-blocking additive (e.g. bovine serum albumin) resulted in a 72% glucose yield increase for stem hydrolysis using 10 mg enzyme protein per g glucan. While pretreatment promotes amorphous hemicellulose decrease and cellulose decomposition, it causes enzyme inhibition/deactivation due to potential inhibitors (phenols and lignin-derived compounds). This study confirms the addition of non-catalytic proteins enhances the cellulose conversion by avoiding non-productive binding of enzymes to the lignin and lignin-derived molecules, with lignin content determining the degree of inhibition and conversion efficiency.
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Affiliation(s)
- Daehwan Kim
- Department of Biology, Hood College Frederick MD 21701 USA
| | - Chang Geun Yoo
- Department of Chemical Engineering, State University of New York - College of Environmental Science and Forestry Syracuse NY 13210 USA
| | - Jurgen Schwarz
- Department of Agriculture, Food and Resource Sciences, University of Maryland Eastern Shore Princess Anne MD 21853 USA
| | - Sadanand Dhekney
- Department of Agriculture, Food and Resource Sciences, University of Maryland Eastern Shore Princess Anne MD 21853 USA
| | - Robert Kozak
- Atlantic Biomass Conversions, LLC Frederick MD 21701 USA
| | - Craig Laufer
- Department of Biology, Hood College Frederick MD 21701 USA
| | - Drew Ferrier
- Department of Biology, Hood College Frederick MD 21701 USA
| | - Skylar Mackay
- Department of Biology, Hood College Frederick MD 21701 USA
| | | | | | - Sinyeon Kim
- MtheraPharma Co., Ltd. Seoul 07793 Republic of Korea
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Vedovatto F, Bonatto C, Bazoti SF, Venturin B, Alves SL, Kunz A, Steinmetz RLR, Treichel H, Mazutti MA, Zabot GL, Tres MV. Production of biofuels from soybean straw and hull hydrolysates obtained by subcritical water hydrolysis. BIORESOURCE TECHNOLOGY 2021; 328:124837. [PMID: 33607449 DOI: 10.1016/j.biortech.2021.124837] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/07/2021] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
The objective of this study was to evaluate the ethanol production by Wickerhamomyces sp. using soybean straw and hull hydrolysates obtained by subcritical water hydrolysis and, afterward, the biogas production using the fermented hydrolysates. Ethanol was produced using the straw and hull hydrolysates diluted and supplement with glucose, reaching 5.57 ± 0.01 g/L and 6.11 ± 0.11 g/L, respectively. The fermentation in a bioreactor with changing the pH to 7.0 allowed achieving maximum ethanol production of 4.03 and 3.60 g/L for straw and hull hydrolysates at 24 h, respectively. The biogas productions obtained for the fermented hydrolysates of straw with and without changing the pH were 739 ± 37 and 652 ± 34 NmL/gVSad, respectively. The fermented hydrolysate of hull without changing the pH presented 620 ± 26 NmL/gVSad. The soybean residues produced biofuels, indicating these residues show potential as raw material for renewable energy production.
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Affiliation(s)
- Felipe Vedovatto
- Department of Agricultural Engineering, Federal University of Santa Maria, 1000, Roraima av., Santa Maria 97105-900, Brazil; Laboratory of Agroindustrial Processes Engineering (LAPE), Federal University of Santa Maria, 1040, Sete de Setembro av., Cachoeira do Sul 96506-322, Brazil
| | - Charline Bonatto
- Laboratory of Microbiology and Bioprocess, Federal University of Fronteira Sul, 200, ERS 135 - km 72, Erechim 99700-970, Brazil; Department of Chemical and Food Engineering, Federal University of Santa Catarina, Trindade, Florianópolis 88040-900, Brazil
| | - Suzana F Bazoti
- Laboratory of Microbiology and Bioprocess, Federal University of Fronteira Sul, 200, ERS 135 - km 72, Erechim 99700-970, Brazil
| | - Bruno Venturin
- Western Paraná State University, R. Universitária, Cascavel 85819-110, Brazil
| | - Sérgio L Alves
- Laboratory of Biochemistry and Genetics, Federal University of Fronteira Sul, Rodovia SC 484 - Km 02, Chapecó, 89815-899, Brazil
| | - Airton Kunz
- Laboratory of Microbiology and Bioprocess, Federal University of Fronteira Sul, 200, ERS 135 - km 72, Erechim 99700-970, Brazil; Western Paraná State University, R. Universitária, Cascavel 85819-110, Brazil; Embrapa Suínos e Aves, BR 153 - Km 110, Concórdia 89710-028, Brazil
| | | | - Helen Treichel
- Laboratory of Microbiology and Bioprocess, Federal University of Fronteira Sul, 200, ERS 135 - km 72, Erechim 99700-970, Brazil
| | - Marcio A Mazutti
- Department of Agricultural Engineering, Federal University of Santa Maria, 1000, Roraima av., Santa Maria 97105-900, Brazil; Department of Chemical Engineering, Federal University of Santa Maria, 1000, Roraima av., Santa Maria 97105-900, Brazil
| | - Giovani L Zabot
- Laboratory of Agroindustrial Processes Engineering (LAPE), Federal University of Santa Maria, 1040, Sete de Setembro av., Cachoeira do Sul 96506-322, Brazil
| | - Marcus V Tres
- Laboratory of Agroindustrial Processes Engineering (LAPE), Federal University of Santa Maria, 1040, Sete de Setembro av., Cachoeira do Sul 96506-322, Brazil.
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8
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Yue X, Suopajärvi T, Mankinen O, Mikola M, Mikkelson A, Ahola J, Hiltunen S, Komulainen S, Kantola AM, Telkki VV, Liimatainen H. Comparison of Lignin Fractions Isolated from Wheat Straw Using Alkaline and Acidic Deep Eutectic Solvents. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:15074-15084. [PMID: 33290067 DOI: 10.1021/acs.jafc.0c04981] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
This study aims to examine the characteristics of two solid lignin fractions isolated from wheat straw using alkaline and acidic deep eutectic solvents (DESs). The chemical properties and morphological characteristics of the two lignin fractions were evaluated by measuring their purity, elemental composition, molecular weight and particle size distributions, and microstructure. Their chemical structure was evaluated using DRIFT (diffuse reflectance infrared Fourier transform) spectroscopy, GPC (gel permeation chromatography), TGA (thermogravimetric analysis), 13C NMR (nuclear magnetic resonance), 31P NMR, and HSQC NMR. Our findings showed that the lignin isolated using alkaline DESs was less pure and had a smaller particle size, higher molecular weight, and thermal stability compared to the lignin isolated using acidic DESs. Their lignin structure was also determined to be different due to varying selective fractures on the linkages of lignin. These results suggest that the DES treatments could selectively extract lignin from wheat straw with different yields, compositions, morphologies, and structures, which could then provide a theoretical basis for the selection of DESs for specially appointed lignin extraction.
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Affiliation(s)
- Xin Yue
- Fiber and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland
| | - Terhi Suopajärvi
- Fiber and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland
| | - Otto Mankinen
- NMR Research Unit, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland
- Oulu Functional NeuroImaging Group, Research Unit of Medical Imaging, Physics and Technology, Medical Research Center Oulu, University of Oulu and Oulu University Hospital, P.O. Box 50, 90029 Oulu, Finland
| | - Marja Mikola
- Chemical Process Engineering Research Unit, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland
| | - Atte Mikkelson
- VTT Technical Research Centre of Finland, Vuorimiehentie 3, 02150 Espoo, Finland
| | - Juha Ahola
- Chemical Process Engineering Research Unit, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland
| | - Sami Hiltunen
- NMR Research Unit, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland
| | - Sanna Komulainen
- NMR Research Unit, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland
| | - Anu M Kantola
- NMR Research Unit, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland
| | | | - Henrikki Liimatainen
- Fiber and Particle Engineering Research Unit, University of Oulu, P.O. Box 4300, 90014 Oulu, Finland
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9
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Saha BC, Kennedy GJ. Optimization of xylitol production from xylose by a novel arabitol limited co-producing Barnettozyma populi NRRL Y-12728. Prep Biochem Biotechnol 2020; 51:761-768. [PMID: 33305654 DOI: 10.1080/10826068.2020.1855443] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
Xylitol is a widely marketed sweetener with good functionality and health-promoting properties. It can be synthetized by many yeast species in a one-step reduction of xylose. Arabinose is a common contaminant found in xylose and there is ongoing interest in finding biocatalysts that selectively produce xyltiol. From a screen of 99 yeasts, Barnettozyma populi Y-12728 was found to selectively produce xylitol from both mixed sugars and corn stover hemicellulosic hydrolysate. Here, fermentation conditions for xylitol production from xylose by B. populi were optimized. The medium for xylitol production was optimized through response surface methodology. The yeast produced 31.2 ± 0.4 g xylitol from xylose (50 g L-1) in 62 h using the optimized medium. The optimal pH for xylitol production was 6.0. Glucose (10 g L-1), acetic acid (6.0 g L-1), HMF (4 mM) and ethanol (2.0 g L-1) inhibited the xylitol production. The glucose inhibition was entirely mitigated by using a 2-stage aeration strategy, indicating that the yeast was inhibited by ethanol produced from glucose under low aeration. This culture strategy will greatly benefit xylitol production from hemicellulosic hydrolysates, which often contain glucose. This is the first report on optimization of xylitol production by a Barnettozyma species.
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Affiliation(s)
- Badal C Saha
- Bioenergy Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, U. S. Department of Agriculture, Peoria, IL, USA
| | - Gregory J Kennedy
- Bioenergy Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, U. S. Department of Agriculture, Peoria, IL, USA
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Gares M, Hiligsmann S, Kacem Chaouche N. Lignocellulosic biomass and industrial bioprocesses for the production of second generation bio-ethanol, does it have a future in Algeria? SN APPLIED SCIENCES 2020. [DOI: 10.1007/s42452-020-03442-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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11
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Baibakova OV, Skiba EA, Budaeva VV, Gismatulina YA, Sakovich GV. Producing Bioethanol from Miscanthus: Experience of Primary Scale-Up. CATALYSIS IN INDUSTRY 2020. [DOI: 10.1134/s2070050420020038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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12
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Patel M, Patel HM, Dave S. Determination of bioethanol production potential from lignocellulosic biomass using novel Cel-5m isolated from cow rumen metagenome. Int J Biol Macromol 2020; 153:1099-1106. [DOI: 10.1016/j.ijbiomac.2019.10.240] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 10/13/2019] [Accepted: 10/25/2019] [Indexed: 11/17/2022]
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13
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Pérez-Pimienta JA, Papa G, Gladden JM, Simmons BA, Sanchez A. The effect of continuous tubular reactor technologies on the pretreatment of lignocellulosic biomass at pilot-scale for bioethanol production. RSC Adv 2020; 10:18147-18159. [PMID: 35517195 PMCID: PMC9053731 DOI: 10.1039/d0ra04031b] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Accepted: 05/06/2020] [Indexed: 11/21/2022] Open
Abstract
A pilot-scale continuous tubular reactor increases enzymatic digestibility of four different feedstocks by removing xylan and effectively achieving economically viable ethanol concentrations.
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Affiliation(s)
- José A. Pérez-Pimienta
- Laboratorio de Futuros en Bioenergía
- Unidad Guadalajara de Ingeniería Avanzada
- Centro de Investigación y Estudios Avanzados (CINVESTAV)
- Zapopan
- Mexico
| | - Gabriela Papa
- Joint BioEnergy Institute
- Biological Systems and Engineering Division
- Lawrence Berkeley National Laboratory
- Emeryville
- USA
| | - John M. Gladden
- Joint BioEnergy Institute
- Biological Systems and Engineering Division
- Lawrence Berkeley National Laboratory
- Emeryville
- USA
| | - Blake A. Simmons
- Joint BioEnergy Institute
- Biological Systems and Engineering Division
- Lawrence Berkeley National Laboratory
- Emeryville
- USA
| | - Arturo Sanchez
- Laboratorio de Futuros en Bioenergía
- Unidad Guadalajara de Ingeniería Avanzada
- Centro de Investigación y Estudios Avanzados (CINVESTAV)
- Zapopan
- Mexico
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Mahboubi A, Uwineza C, Doyen W, De Wever H, Taherzadeh MJ. Intensification of lignocellulosic bioethanol production process using continuous double-staged immersed membrane bioreactors. BIORESOURCE TECHNOLOGY 2020; 296:122314. [PMID: 31671329 DOI: 10.1016/j.biortech.2019.122314] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 10/17/2019] [Accepted: 10/18/2019] [Indexed: 06/10/2023]
Abstract
Processing complexities associated with different lignocellulosic bioethanol production stages have hindered reaching full commercial capacity. Therefore, in this study efforts were made to remediate some issues associated with hydrolysis and fermentation, by the integration of immersed membrane bioreactors (iMBRs) into lignocellulosic bioethanol production process. In this regards, double-staged continuous saccharification-filtration and co-fermentation-filtration of wheat straw slurry was conducted using iMBRs at filtration fluxes up to 51.0 l.m-2.h-1 (LMH). The results showed a stable long-term (264 h) continuous hydrolysis-filtration and fermentation-filtration with effective separation of lignin-rich solids (up to 70% lignin) from hydrolyzed sugars, and separation of yeast cells from bioethanol stream at an exceptional filtration performance at 21.9 LMH. Moreover, the effect of factors such as filtration flux, medium quality and backwashing on fouling and cake-layer formation was studied. The results confirmed the process intensification potentials of iMBRs in tackling commonly faced technical obstacles in lignocellulosic bioethanol production.
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Affiliation(s)
- A Mahboubi
- Swedish Centre for Resource Recovery, University of Borås, 501 90 Borås, Sweden; Flemish Institute for Technological Research, VITO NV, Boeretang 200, B-2400 Mol, Belgium.
| | - C Uwineza
- Swedish Centre for Resource Recovery, University of Borås, 501 90 Borås, Sweden
| | - W Doyen
- Mixed Matrix Material Innovations BVBA, B-2160 Wommelgem, Belgium
| | - H De Wever
- Flemish Institute for Technological Research, VITO NV, Boeretang 200, B-2400 Mol, Belgium
| | - M J Taherzadeh
- Swedish Centre for Resource Recovery, University of Borås, 501 90 Borås, Sweden
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15
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Study on the Sequential Combination of Bioethanol and Biogas Production from Corn Straw. Molecules 2019; 24:molecules24244558. [PMID: 31842493 PMCID: PMC6943537 DOI: 10.3390/molecules24244558] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 12/09/2019] [Accepted: 12/12/2019] [Indexed: 11/16/2022] Open
Abstract
The objective of this study was to obtain two types of fuels, i.e., bioethanol and biogas, in a sequential combination of biochemical processes from lignocellulosic biomass (corn straw). Waste from the agricultural sector containing lignocellulose structures was used to obtain bioethanol, while the post-fermentation (cellulose stillage) residue obtained from ethanol fermentation was a raw material for the production of high-power biogas in the methane fermentation process. The studies on obtaining ethanol from lignocellulosic substrate were based on the simultaneous saccharification and fermentation (SSF) method, which is a simultaneous hydrolysis of enzymatic cellulose and fermentation of the obtained sugars. Saccharomyces cerevisiae (D-2) in the form of yeast cream was used for bioethanol production. The yeast strain D-2 originated from the collection of the Institute of Agricultural and Food Biotechnology. Volatile compounds identified in the distillates were measured using gas chromatography with flame ionization detector (GC-FID). CH4 and CO2 contained in the biogas were analyzed using a gas chromatograph in isothermal conditions, equipped with thermal conductivity detector (katharometer) with incandescent fiber. Our results show that simultaneous saccharification and fermentation enables production of bioethanol from agricultural residues with management of cellulose stillage in the methane fermentation process.
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Zhu Y, Zhao Z, Zhang Y. Using straw as a bio-ethanol source to promote anaerobic digestion of waste activated sludge. BIORESOURCE TECHNOLOGY 2019; 286:121388. [PMID: 31063945 DOI: 10.1016/j.biortech.2019.121388] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 04/24/2019] [Accepted: 04/27/2019] [Indexed: 06/09/2023]
Abstract
Commercial ethanol production from straw is a series of complex processes that are energy-intensive and uneconomical. Corn straw was used as a bioethanol source to mix with waste activated sludge for improving anaerobic co-digestion (AcoD) in this study. Ethanol production from the straw after yeast fermentation was 1400-2200 mg COD/L, accounting for about 0.1% of the fermentative effluent, but methane production of the yeast-group increased by 36% compared to that of control-group with no ethanol production in advance. Volatile suspended solid removal achieved 60%, obviously higher than common anaerobic digestion (AD). Multiple lines of evidence including sludge conductance, effects of activated carbon on methanogenesis and microbial community demonstrated that ethanol from the straw fermentation stimulated direct interspecies electron transfer to be established in the digesters. The results suggested that using ethanol produced from straw was a cost-effective novel way for energy recovery from disposal of agricultural and municipal wastes.
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Affiliation(s)
- Yahui Zhu
- Key Laboratory of Industrial Ecology and Environmental Engineering (Dalian University of Technology), Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Zhiqiang Zhao
- Key Laboratory of Industrial Ecology and Environmental Engineering (Dalian University of Technology), Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China
| | - Yaobin Zhang
- Key Laboratory of Industrial Ecology and Environmental Engineering (Dalian University of Technology), Ministry of Education, School of Environmental Science and Technology, Dalian University of Technology, Dalian 116024, China.
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Camargo D, Sydney EB, Leonel LV, Pintro TC, Sene L. DILUTE ACID HYDROLYSIS OF SWEET SORGHUM BAGASSE AND FERMENTABILITY OF THE HEMICELLULOSIC HYDROLYSATE. BRAZILIAN JOURNAL OF CHEMICAL ENGINEERING 2019. [DOI: 10.1590/0104-6632.20190361s20170643] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
| | | | | | | | - Luciane Sene
- Universidade Estadual do Oeste do Paraná, Brasil
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Skiba EA, Mironova GF, Kukhlenko AA, Orlov SE. Enhancing the Yield of Bioethanol from the Lignocellulose of Oat Hulls by Optimizing the Composition of the Nutrient Medium. CATALYSIS IN INDUSTRY 2018. [DOI: 10.1134/s207005041803008x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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He B, Zhu X, Zhao C, Ma Y, Yang W. Sequential co-immobilization of β-glucosidase and yeast cells on single polymer support for bioethanol production. Sci China Chem 2018. [DOI: 10.1007/s11426-018-9319-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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20
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Mudrak T, Kuts A, Kovalchuk S, Kyrylenko R, Bondar N. SELECTION OF THE COMPLEX OF ENZYME PREPARATIONS FOR THE HYDROLYSIS OF GRAIN CONSTITUENTS DURING THE FERMENTATION OF THE WORT OF HIGH CONCENTRATION. FOOD SCIENCE AND TECHNOLOGY 2018. [DOI: 10.15673/fst.v12i2.931] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In this paper, an optimal complex is selected of enzyme preparations for hydrolysis of the components of grain raw materials during fermentation of high concentration wort. When selecting enzyme systems, their effect on the technical and chemical parameters of the fermented wash during the fermentation of wort is investigated. For the research, maize grain with a starch content of 69.0 % was used. Fermentation was carried out with 18–30% of dry matters (DM) in the wort, using the osmophilic yeast strain Saccharomyces cerevisiae DO-16.The recommended concentration of the enzyme preparation Amylex 4 T (the source of the α-amylase enzyme) – 0.4–0.6 units of α-amylase ability/g of starch – is optimal for the concentration 18–27% of DS in the wort. For 30 % of DS, it is practical to use 0.6 units of α-amylase ability/g of starch. With the use of the enzyme preparation Diazyme TGA (the source of the enzyme glucoamylase), the value is 7.5 units of glucoamylase ability/g of starch, alcohol accumulation in fermented washes was 10.51, 13.35, 15.78% vol., according to the wort concentrations 18, 27, 30 %, respectively. It has been established that with the application of the cytolytic enzyme Laminex 750, the concentrations of dissolved carbohydrates and non-dissolved starch have a tendency to decrease. In the samples where the proteolytic enzyme preparation Alphalase AFP was added at a concentration of 0.05 units of proteolytic ability/g of raw materials, there was an increase in the accumulation of yeast cells by 6.5% compared with the reference sample. The recommended concentration of Deltazyme VR XL (the source of β-glucanase and xylanase) is 0.05 units β-glucose/g of raw materials. The addition of a cytolytic and proteolytic enzyme preparation in combination with β-glucanase and xylanase contributed to an increase in the accumulation of ethanol in the washes by 1.7 % compared with the reference sample, and to an almost 33 % decrease in the concentration of dissolved carbohydrates and non-dissolved starch. On the basis of experimental studies, it has been found that using a complex of enzyme preparations – amylolytic (Amylex 4T), saccharifying (Diazyme TGA), proteolytic (Alphalase AFP), cytolytic (Laminex 750), and complex AF β-glucanase and xylanase (Deltazyme VR XL), in various combinations of their concentrations, – contributed to the intensification of the fermentation process of the wort and increased accumulation of the target product, ethanol, by 0.8–1.4 %, depending on the wort concentration. The highest amount of ethanol accumulated at the maximum dosage of additional enzyme preparations.
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Yuan Z, Wen Y, Li G. Production of bioethanol and value added compounds from wheat straw through combined alkaline/alkaline-peroxide pretreatment. BIORESOURCE TECHNOLOGY 2018; 259:228-236. [PMID: 29567594 DOI: 10.1016/j.biortech.2018.03.044] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Revised: 03/08/2018] [Accepted: 03/09/2018] [Indexed: 06/08/2023]
Abstract
An efficient scheme was developed for the conversion of wheat straw (WS) into bioethanol, silica and lignin. WS was pre-extracted with 0.2 mol/L sodium hydroxide at 30 °C for 5 h to remove about 91% of initial silica. Subsequently, the alkaline-pretreated solids were subjected to alkaline hydrogen peroxide (AHP) pretreatment with 40 mg hydrogen peroxide (H2O2)/g biomass at 50 °C for 7 h to prepare highly digestible substrate. The results of enzymatic hydrolysis demonstrated that the sequential alkaline-AHP pretreated WS was efficiently hydrolyzed at 10% (w/v) solids loading using an enzyme dosage of 10 mg protein/g glucan. The total sugar conversion of 92.4% was achieved. Simultaneous saccharification and co-fermentation (SSCF) was applied to produce ethanol from the two-stage pretreated substrate using Saccharomyces cerevisiae SR8u strain. Ethanol with concentration of 31.1 g/L was produced. Through the proposed process, about 86.4% and 54.1% of the initial silica and lignin were recovered, respectively.
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Affiliation(s)
- Zhaoyang Yuan
- Department of Biochemistry & Molecular Biology, Michigan State University, 603 Wilson Road, East Lansing, MI 48824, USA.
| | - Yangbing Wen
- Tianjin Key Laboratory of Pulp & Paper, Tianjin University of Science and Technology, Tianjin 300457, China
| | - Guodong Li
- Key Lab of Pulp & Paper Science and Technology of Education Ministry of China, Qilu University of Technology, Jinan 250353, China
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22
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Nair RB, Kabir MM, Lennartsson PR, Taherzadeh MJ, Horváth IS. Integrated Process for Ethanol, Biogas, and Edible Filamentous Fungi-Based Animal Feed Production from Dilute Phosphoric Acid-Pretreated Wheat Straw. Appl Biochem Biotechnol 2018; 184:48-62. [PMID: 28597311 PMCID: PMC5756571 DOI: 10.1007/s12010-017-2525-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 05/25/2017] [Indexed: 12/23/2022]
Abstract
Integration of wheat straw for a biorefinery-based energy generation process by producing ethanol and biogas together with the production of high-protein fungal biomass (suitable for feed application) was the main focus of the present study. An edible ascomycete fungal strain Neurospora intermedia was used for the ethanol fermentation and subsequent biomass production from dilute phosphoric acid (0.7 to 1.2% w/v) pretreated wheat straw. At optimum pretreatment conditions, an ethanol yield of 84 to 90% of the theoretical maximum, based on glucan content of substrate straw, was observed from fungal fermentation post the enzymatic hydrolysis process. The biogas production from the pretreated straw slurry showed an improved methane yield potential up to 162% increase, as compared to that of the untreated straw. Additional biogas production, using the syrup, a waste stream obtained post the ethanol fermentation, resulted in a combined total energy output of 15.8 MJ/kg wheat straw. Moreover, using thin stillage (a waste stream from the first-generation wheat-based ethanol process) as a co-substrate to the biogas process resulted in an additional increase by about 14 to 27% in the total energy output as compared to using only wheat straw-based substrates. ᅟ.
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Affiliation(s)
- Ramkumar B Nair
- Swedish Centre for Resource Recovery, University of Borås, 50190, Borås, SE, Sweden.
| | - Maryam M Kabir
- Swedish Centre for Resource Recovery, University of Borås, 50190, Borås, SE, Sweden
| | - Patrik R Lennartsson
- Swedish Centre for Resource Recovery, University of Borås, 50190, Borås, SE, Sweden
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Jeong H, Park YC, Seong YJ, Lee SM. Sugar and ethanol production from woody biomass via supercritical water hydrolysis in a continuous pilot-scale system using acid catalyst. BIORESOURCE TECHNOLOGY 2017; 245:351-357. [PMID: 28898830 DOI: 10.1016/j.biortech.2017.08.058] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 08/09/2017] [Accepted: 08/10/2017] [Indexed: 06/07/2023]
Abstract
The aim of this study were to efficiently produce fermentable sugars by continuous type supercritical water hydrolysis (SCWH) of Quercus mongolica at the pilot scale with varying acid catalyst loading and to use the obtained sugars for ethanol production. The SCWH of biomass was achieved in under one second (380°C, 230bar) using 0.01-0.1% H2SO4. With 0.05% H2SO4, 49.8% of sugars, including glucose (16.5% based on biomass) and xylose monomers (10.8%), were liberated from biomass. The hydrolysates were fermented with S. cerevisiae DXSP and D452-2 to estimate ethanol production. To prepare the fermentation medium, the hydrolysates were detoxified using activated charcoal and then concentrated. The ethanol yield of fermentation with S. cerevisiae DXSP was 14.1% (based on biomass). The proposed system has potential for improvement in yield through process optimization. After further development, it is expected to be a competitive alternative to traditional systems for ethanol production from woody biomass.
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Affiliation(s)
- Hanseob Jeong
- Division of Wood Chemistry & Microbiology, Department of Forest Products, National Institute of Forest Science, Seoul 02455, Republic of Korea
| | - Yong-Cheol Park
- Department of Bio and Fermentation Convergence Technology, and BK21 Plus Program, Kookmin University, Seoul 02707, Republic of Korea
| | - Yeong-Je Seong
- Department of Bio and Fermentation Convergence Technology, and BK21 Plus Program, Kookmin University, Seoul 02707, Republic of Korea
| | - Soo Min Lee
- Division of Wood Chemistry & Microbiology, Department of Forest Products, National Institute of Forest Science, Seoul 02455, Republic of Korea.
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Chen H, Shen H, Su H, Chen H, Tan F, Lin J. High-efficiency bioconversion of kitchen garbage to biobutanol using an enzymatic cocktail procedure. BIORESOURCE TECHNOLOGY 2017; 245:1110-1121. [PMID: 28950653 DOI: 10.1016/j.biortech.2017.09.056] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2017] [Revised: 09/01/2017] [Accepted: 09/04/2017] [Indexed: 06/07/2023]
Abstract
Research on methods to produce biobutanol production from kitchen garbage (KG) as a potential substrate is thus far lacking. Here, the effect of various enzymatic hydrolysis procedures (EHP) was first tested using different enzyme cocktails, on the decomposition of KG. The efficiency of Clostridium acetobutylicum-mediated biobutanol production was then measured using two modes: separate hydrolysis and fermentation (SHF) and simultaneous saccharification fermentation (SSF) in the condition of adjusting pH. The optimal results were obtained using (1) an enzymatic hydrolysis cocktail procedure (EHC5), (2) use of the SSF approach and (3) pH control. This approach results in a biobutanol production of 16.37g/L and total solvent concentration of 32.96g/L. Compared to experiments that use pure glucose asa substrate, our results show that KG is a promising feedstock for biobutanol production. The results demonstrate the feasibility of this waste source for an industrial application via the EHP.
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Affiliation(s)
- Hua Chen
- School of Resource and Environment, Southwest University, Beibei, Chongqing 400714, PR China
| | - Hong Shen
- School of Resource and Environment, Southwest University, Beibei, Chongqing 400714, PR China.
| | - HaiFeng Su
- Chongqing Institute of Green and Interligent Technology, Chinese Academy of Science, 266, Fangzheng Avenue, Shuitu High-tech Park, Beibei, Chongqing 400714, PR China
| | - HongZhen Chen
- Chongqing Institute of Green and Interligent Technology, Chinese Academy of Science, 266, Fangzheng Avenue, Shuitu High-tech Park, Beibei, Chongqing 400714, PR China
| | - FuRong Tan
- Biogas Institute of Ministry of Agriculture, Chengdu 610041, Sichuan, PR China.
| | - JiaFu Lin
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu, PR China.
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Ravikumar S, Baylon MG, Park SJ, Choi JI. Engineered microbial biosensors based on bacterial two-component systems as synthetic biotechnology platforms in bioremediation and biorefinery. Microb Cell Fact 2017; 16:62. [PMID: 28410609 PMCID: PMC5391612 DOI: 10.1186/s12934-017-0675-z] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2016] [Accepted: 04/04/2017] [Indexed: 12/30/2022] Open
Abstract
Two-component regulatory systems (TCRSs) mediate cellular response by coupling sensing and regulatory mechanisms. TCRSs are comprised of a histidine kinase (HK), which serves as a sensor, and a response regulator, which regulates expression of the effector gene after being phosphorylated by HK. Using these attributes, bacterial TCRSs can be engineered to design microbial systems for different applications. This review focuses on the current advances in TCRS-based biosensors and on the design of microbial systems for bioremediation and their potential application in biorefinery.
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Affiliation(s)
- Sambandam Ravikumar
- Biomolecules Engineering Lab, Department of Biotechnology and Bioengineering, Chonnam National University, 77 Yongbong-ro, Gwangju, 61186, Republic of Korea
| | - Mary Grace Baylon
- Division of Chemical Engineering and Materials Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea
| | - Si Jae Park
- Division of Chemical Engineering and Materials Science, Ewha Womans University, 52 Ewhayeodae-gil, Seodaemun-gu, Seoul, 03760, Republic of Korea.
| | - Jong-Il Choi
- Biomolecules Engineering Lab, Department of Biotechnology and Bioengineering, Chonnam National University, 77 Yongbong-ro, Gwangju, 61186, Republic of Korea.
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Wang B, Li H, Zhu L, Tan F, Li Y, Zhang L, Ding Z, Shi G. High-efficient production of citric acid by Aspergillus niger from high concentration of substrate based on the staged-addition glucoamylase strategy. Bioprocess Biosyst Eng 2017; 40:891-899. [DOI: 10.1007/s00449-017-1753-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2016] [Accepted: 02/14/2017] [Indexed: 11/25/2022]
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Optimizing Phosphoric Acid plus Hydrogen Peroxide (PHP) Pretreatment on Wheat Straw by Response Surface Method for Enzymatic Saccharification. Appl Biochem Biotechnol 2016; 181:1123-1139. [DOI: 10.1007/s12010-016-2273-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 09/30/2016] [Indexed: 10/20/2022]
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28
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Mattam AJ, Kuila A, Suralikerimath N, Choudary N, Rao PVC, Velankar HR. Cellulolytic enzyme expression and simultaneous conversion of lignocellulosic sugars into ethanol and xylitol by a new Candida tropicalis strain. BIOTECHNOLOGY FOR BIOFUELS 2016; 9:157. [PMID: 27462368 PMCID: PMC4960679 DOI: 10.1186/s13068-016-0575-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Accepted: 07/14/2016] [Indexed: 05/31/2023]
Abstract
BACKGROUND Lignocellulosic ethanol production involves major steps such as thermochemical pretreatment of biomass, enzymatic hydrolysis of pre-treated biomass and the fermentation of released sugars into ethanol. At least two different organisms are conventionally utilized for producing cellulolytic enzymes and for ethanol production through fermentation, whereas in the present study a single yeast isolate with the capacity to simultaneously produce cellulases and xylanases and ferment the released sugars into ethanol and xylitol has been described. RESULTS A yeast strain isolated from soil samples and identified as Candida tropicalis MTCC 25057 expressed cellulases and xylanases over a wide range of temperatures (32 and 42 °C) and in the presence of different cellulosic substrates [carboxymethylcellulose and wheat straw (WS)]. The studies indicated that the cultivation of yeast at 42 °C in pre-treated hydrolysate containing 0.5 % WS resulted in proportional expression of cellulases (exoglucanases and endoglucanases) at concentrations of 114.1 and 97.8 U g(-1) ds, respectively. A high xylanase activity (689.3 U g(-1) ds) was also exhibited by the yeast under similar growth conditions. Maximum expression of cellulolytic enzymes by the yeast occurred within 24 h of incubation. Of the sugars released from biomass after pretreatment, 49 g L(-1) xylose was aerobically converted into 15.8 g L(-1) of xylitol. In addition, 25.4 g L(-1) glucose released after the enzymatic hydrolysis of biomass was fermented by the same yeast to obtain an ethanol titer of 7.3 g L(-1). CONCLUSIONS During the present study, a new strain of C. tropicalis was isolated and found to have potential for consolidated bioprocessing (CBP) applications. The strain could grow in a wide range of process conditions (temperature, pH) and in the presence of lignocellulosic inhibitors such as furfural, HMF and acetic acid. The new yeast produced cellulolytic enzymes over a wide temperature range and in the presence of various cellulosic substrates. The cellulolytic enzymes produced by the yeast were effectively used for the hydrolysis of pretreated biomass. The released sugars, xylose and glucose were, respectively, converted into xylitol and ethanol. The potential shown by the new inhibitor tolerant cellulolytic C. tropicalis to produce ethanol or xylitol is of great industrial significance.
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Affiliation(s)
- Anu Jose Mattam
- Bioprocess Group, Hindustan Petroleum Corporation Limited, HP Green R&D Centre, KIADB Industrial Area, Tarabahalli, Devanagundi, Hoskote, Bengaluru, 560067 India
| | - Arindam Kuila
- Bioprocess Group, Hindustan Petroleum Corporation Limited, HP Green R&D Centre, KIADB Industrial Area, Tarabahalli, Devanagundi, Hoskote, Bengaluru, 560067 India
| | - Niranjan Suralikerimath
- Bioprocess Group, Hindustan Petroleum Corporation Limited, HP Green R&D Centre, KIADB Industrial Area, Tarabahalli, Devanagundi, Hoskote, Bengaluru, 560067 India
| | - Nettem Choudary
- Bioprocess Group, Hindustan Petroleum Corporation Limited, HP Green R&D Centre, KIADB Industrial Area, Tarabahalli, Devanagundi, Hoskote, Bengaluru, 560067 India
| | - Peddy V. C. Rao
- Bioprocess Group, Hindustan Petroleum Corporation Limited, HP Green R&D Centre, KIADB Industrial Area, Tarabahalli, Devanagundi, Hoskote, Bengaluru, 560067 India
| | - Harshad Ravindra Velankar
- Bioprocess Group, Hindustan Petroleum Corporation Limited, HP Green R&D Centre, KIADB Industrial Area, Tarabahalli, Devanagundi, Hoskote, Bengaluru, 560067 India
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Boakye-Boaten NA, Xiu S, Shahbazi A, Wang L, Li R, Mims M, Schimmel K. Effects of fertilizer application and dry/wet processing of Miscanthus x giganteus on bioethanol production. BIORESOURCE TECHNOLOGY 2016; 204:98-105. [PMID: 26773953 DOI: 10.1016/j.biortech.2015.12.070] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 12/21/2015] [Accepted: 12/22/2015] [Indexed: 06/05/2023]
Abstract
The effects of wet and dry processing of miscanthus on bioethanol production using simultaneous saccharification and fermentation (SSF) process were investigated, with wet samples showing higher ethanol yields than dry samples. Miscanthus grown with no fertilizer, with fertilizer and with swine manure were sampled for analysis. Wet-fractionation was used to separate miscanthus into solid and liquid fractions. Dilute sulfuric acid pretreatment was employed and the SSF process was performed with saccharomyces cerevisiae and a cocktail of enzymes at 35°C. After pretreatment, cellulose compositions of biomass of the wet samples increased from 61.0-67.0% to 77.0-87.0%, which were higher than the compositions of dry samples. The highest theoretical ethanol yield of 88.0% was realized for wet processed pretreated miscanthus, grown with swine manure. Changes to the morphology and chemical composition of the biomass samples after pretreatment, such as crystallinity reduction, were observed using SEM and FTIR. These changes improved ethanol production.
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Affiliation(s)
- Nana Abayie Boakye-Boaten
- Energy and Environmental Systems Program, College of Arts and Science, North Carolina A & T State University, 1601 East Market Street, Greensboro, NC 27411, United States; Biological Engineering Program, Department of Natural Resources and Environmental Design, North Carolina A & T State University, 1601 East Market Street, Greensboro, NC 27411, United States
| | - Shuangning Xiu
- Biological Engineering Program, Department of Natural Resources and Environmental Design, North Carolina A & T State University, 1601 East Market Street, Greensboro, NC 27411, United States.
| | - Abolghasem Shahbazi
- Biological Engineering Program, Department of Natural Resources and Environmental Design, North Carolina A & T State University, 1601 East Market Street, Greensboro, NC 27411, United States
| | - Lijun Wang
- Biological Engineering Program, Department of Natural Resources and Environmental Design, North Carolina A & T State University, 1601 East Market Street, Greensboro, NC 27411, United States
| | - Rui Li
- Joint School of Nanoscience and Nanoengineering, North Carolina A & T State University, 2907 E. Gate City Blvd, Greensboro, NC 27401, United States; Biological Engineering Program, Department of Natural Resources and Environmental Design, North Carolina A & T State University, 1601 East Market Street, Greensboro, NC 27411, United States
| | - Michelle Mims
- Biological Engineering Program, Department of Natural Resources and Environmental Design, North Carolina A & T State University, 1601 East Market Street, Greensboro, NC 27411, United States
| | - Keith Schimmel
- Energy and Environmental Systems Program, College of Arts and Science, North Carolina A & T State University, 1601 East Market Street, Greensboro, NC 27411, United States
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Ma K, Ruan Z, Shui Z, Wang Y, Hu G, He M. Open fermentative production of fuel ethanol from food waste by an acid-tolerant mutant strain of Zymomonas mobilis. BIORESOURCE TECHNOLOGY 2016; 203:295-302. [PMID: 26744803 DOI: 10.1016/j.biortech.2015.12.054] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 12/17/2015] [Accepted: 12/19/2015] [Indexed: 05/04/2023]
Abstract
The aim of present study was to develop a process for open ethanol fermentation from food waste using an acid-tolerant mutant of Zymomonas mobilis (ZMA7-2). The mutant showed strong tolerance to acid condition of food waste hydrolysate and high ethanol production performance. By optimizing fermentation parameters, ethanol fermentation with initial glucose concentration of 200 g/L, pH value around 4.0, inoculum size of 10% and without nutrient addition was considered as best conditions. Moreover, the potential of bench scales fermentation and cell reusability was also examined. The fermentation in bench scales (44 h) was faster than flask scale (48 h), and the maximum ethanol concentration and ethanol yield (99.78 g/L, 0.50 g/g) higher than that of flask scale (98.31 g/L, 0.49 g/g). In addition, the stable cell growth and ethanol production profile in five cycles successive fermentation was observed, indicating the mutant was suitable for industrial ethanol production.
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Affiliation(s)
- Kedong Ma
- College of Environmental and Chemical Engineering, Dalian University, Dalian 116622, PR China
| | - Zhiyong Ruan
- Key Laboratory of Microbial Resources (Ministry of Agriculture, China), Institute of Agricultural Resources and Regional Planning, CAAS, Beijing 100081, PR China
| | - Zongxia Shui
- Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Biomass Energy Technology Research Centre, Biogas Institute of Ministry of Agriculture, Chengdu 610041, PR China
| | - Yanwei Wang
- Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Biomass Energy Technology Research Centre, Biogas Institute of Ministry of Agriculture, Chengdu 610041, PR China
| | - Guoquan Hu
- Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Biomass Energy Technology Research Centre, Biogas Institute of Ministry of Agriculture, Chengdu 610041, PR China
| | - Mingxiong He
- Key Laboratory of Development and Application of Rural Renewable Energy, Ministry of Agriculture, Biomass Energy Technology Research Centre, Biogas Institute of Ministry of Agriculture, Chengdu 610041, PR China.
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31
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Zhang Q, Weng C, Huang H, Achal V, Wang D. Optimization of Bioethanol Production Using Whole Plant of Water Hyacinth as Substrate in Simultaneous Saccharification and Fermentation Process. Front Microbiol 2016; 6:1411. [PMID: 26779125 PMCID: PMC4703791 DOI: 10.3389/fmicb.2015.01411] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2015] [Accepted: 11/27/2015] [Indexed: 11/13/2022] Open
Abstract
Water hyacinth was used as substrate for bioethanol production in the present study. Combination of acid pretreatment and enzymatic hydrolysis was the most effective process for sugar production that resulted in the production of 402.93 mg reducing sugar at optimal condition. A regression model was built to optimize the fermentation factors according to response surface method in saccharification and fermentation (SSF) process. The optimized condition for ethanol production by SSF process was fermented at 38.87°C in 81.87 h when inoculated with 6.11 ml yeast, where 1.291 g/L bioethanol was produced. Meanwhile, 1.289 g/L ethanol was produced during experimentation, which showed reliability of presented regression model in this research. The optimization method discussed in the present study leading to relatively high bioethanol production could provide a promising way for Alien Invasive Species with high cellulose content.
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Affiliation(s)
- Qiuzhuo Zhang
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University Shanghai, China
| | - Chen Weng
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University Shanghai, China
| | - Huiqin Huang
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University Shanghai, China
| | - Varenyam Achal
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University Shanghai, China
| | - Duanchao Wang
- Shanghai Key Lab for Urban Ecological Processes and Eco-Restoration, School of Ecological and Environmental Sciences, East China Normal University Shanghai, China
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32
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Torres-Ortega CE, Rong BG. Synthesis, Design, and Rigorous Simulation of the Bioethanol Recovery and Dehydration from an Actual Lignocellulosic Fermentation Broth. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b02773] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Carlo Edgar Torres-Ortega
- Department of Chemical Engineering,
Biotechnology and Environmental Technology, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
| | - Ben-Guang Rong
- Department of Chemical Engineering,
Biotechnology and Environmental Technology, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark
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33
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Agrawal R, Satlewal A, Gaur R, Mathur A, Kumar R, Gupta RP, Tuli DK. Pilot scale pretreatment of wheat straw and comparative evaluation of commercial enzyme preparations for biomass saccharification and fermentation. Biochem Eng J 2015. [DOI: 10.1016/j.bej.2015.02.018] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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34
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Zhu S, Huang W, Huang W, Wang K, Chen Q, Wu Y. Coproduction of xylose, lignosulfonate and ethanol from wheat straw. BIORESOURCE TECHNOLOGY 2015; 185:234-239. [PMID: 25770471 DOI: 10.1016/j.biortech.2015.02.115] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 02/27/2015] [Accepted: 02/28/2015] [Indexed: 06/04/2023]
Abstract
A novel integrated process to coproduce xylose, lignosulfonate and ethanol from wheat straw was investigated. Firstly, wheat straw was treated by dilute sulfuric acid and xylose was recovered from its hydrolyzate. Its optimal conditions were 1.0wt% sulfuric acid, 10% (w/v) wheat straw loading, 100°C, and 2h. Then the acid treated wheat straw was treated by sulfomethylation reagent and its hydrolyzate containing lignosulfonate was directly recovered. Its optimal conditions were 150°C, 15% (w/v) acid treated wheat straw loading, and 5h. Finally, the two-step treated wheat straw was converted to ethanol through enzymatic hydrolysis and microbial fermentation. Under optimal conditions, 1kg wheat straw could produce 0.225kg xylose with 95% purity, 4.16kg hydrolyzate of sulfomethylation treatment containing 5.5% lignosulfonate, 0.183kg ethanol and 0.05kg lignin residue. Compared to present technology, this process is a potential economically profitable wheat straw biorefinery.
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Affiliation(s)
- Shengdong Zhu
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Chemical Reactor and Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, People's Republic of China.
| | - Wangxiang Huang
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Chemical Reactor and Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, People's Republic of China
| | - Wenjing Huang
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Chemical Reactor and Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, People's Republic of China
| | - Ke Wang
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Chemical Reactor and Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, People's Republic of China
| | - Qiming Chen
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Chemical Reactor and Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, People's Republic of China
| | - Yuanxin Wu
- Key Laboratory for Green Chemical Process of Ministry of Education, Hubei Key Laboratory of Novel Chemical Reactor and Green Chemical Technology, School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430073, People's Republic of China
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35
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Oh YH, Lee SH, Jang YA, Choi JW, Hong KS, Yu JH, Shin J, Song BK, Mastan SG, David Y, Baylon MG, Lee SY, Park SJ. Development of rice bran treatment process and its use for the synthesis of polyhydroxyalkanoates from rice bran hydrolysate solution. BIORESOURCE TECHNOLOGY 2015; 181:283-290. [PMID: 25661307 DOI: 10.1016/j.biortech.2015.01.075] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 01/16/2015] [Accepted: 01/17/2015] [Indexed: 06/04/2023]
Abstract
Rice bran treatment process for the production of 43.7 kg of hydrolysate solution containing 24.41 g/L of glucose and small amount of fructose from 5 kg of rice bran was developed and employed to produce polyhydroxyalkanoates in recombinant Escherichia coli and Ralstonia eutropha strains. Recombinant E. coli XL1-Blue expressing R. eutropha phaCAB genes and R. eutropha NCIMB11599 could produce poly(3-hydroxybutyrate) with the polymer contents of 90.1 wt% and 97.2 wt%, respectively, when they were cultured in chemically defined MR medium and chemically defined nitrogen free MR medium containing 10 mL/L of rice bran hydrolysate solution, respectively. Also, recombinant E. coli XL1-Blue and recombinant R. eutropha 437-540, both of which express the Pseudomonas sp. phaC1437 gene and the Clostridium propionicum pct540 gene could produce poly(3-hydroxybutyrate-co-lactate) from rice bran hydrolysate solution. These results suggest that rice bran may be a good renewable resource for the production of biomass-based polymers by recombinant microorganisms.
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Affiliation(s)
- Young Hoon Oh
- Industrial Biochemicals Research Group, Research Center for Biobased Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon 305-600, Republic of Korea
| | - Seung Hwan Lee
- Department of Biotechnology and Bioengineering, Chonnam National University, 77 Yongbong-ro, Buk-gu, Gwangju 500-757, Republic of Korea
| | - Young-Ah Jang
- Industrial Biochemicals Research Group, Research Center for Biobased Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon 305-600, Republic of Korea
| | - Jae Woo Choi
- Industrial Biochemicals Research Group, Research Center for Biobased Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon 305-600, Republic of Korea; Department of Chemical System Engineering, Hongik University, Jochiwon, Chungnam 339-701, Republic of Korea
| | - Kyung Sik Hong
- Industrial Biochemicals Research Group, Research Center for Biobased Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon 305-600, Republic of Korea
| | - Ju Hyun Yu
- Industrial Biochemicals Research Group, Research Center for Biobased Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon 305-600, Republic of Korea
| | - Jihoon Shin
- Industrial Biochemicals Research Group, Research Center for Biobased Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon 305-600, Republic of Korea
| | - Bong Keun Song
- Industrial Biochemicals Research Group, Research Center for Biobased Chemistry, Division of Convergence Chemistry, Korea Research Institute of Chemical Technology, P.O. Box 107, 141 Gajeong-ro, Yuseong-gu, Daejeon 305-600, Republic of Korea
| | - Shaik G Mastan
- Department of Environmental Engineering and Energy, Myongji University, 116 Myongji-ro, Cheoin-gu, Yongin, Gyeonggido 449-728, Republic of Korea
| | - Yokimiko David
- Department of Environmental Engineering and Energy, Myongji University, 116 Myongji-ro, Cheoin-gu, Yongin, Gyeonggido 449-728, Republic of Korea
| | - Mary Grace Baylon
- Department of Environmental Engineering and Energy, Myongji University, 116 Myongji-ro, Cheoin-gu, Yongin, Gyeonggido 449-728, Republic of Korea
| | - Sang Yup Lee
- Metabolic and Biomolecular Engineering National Research Laboratory, Department of Chemical and Biomolecular Engineering (BK21 Plus Program), Center for Systems and Synthetic Biotechnology, and Institute for the BioCentury, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea; Department of Bio and Brain Engineering, Department of Biological Sciences, BioProcess Engineering Research Center, and Bioinformatics Research Center, KAIST, 291 Daehak-ro, Yuseong-gu, Daejeon 305-701, Republic of Korea.
| | - Si Jae Park
- Department of Environmental Engineering and Energy, Myongji University, 116 Myongji-ro, Cheoin-gu, Yongin, Gyeonggido 449-728, Republic of Korea.
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36
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Agrawal R, Gaur R, Mathur A, Kumar R, Gupta RP, Tuli DK, Satlewal A. Improved saccharification of pilot-scale acid pretreated wheat straw by exploiting the synergistic behavior of lignocellulose degrading enzymes. RSC Adv 2015. [DOI: 10.1039/c5ra13360b] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Improved saccharification by exploiting the synergism between biomass degrading enzymes.
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Affiliation(s)
- Ruchi Agrawal
- DBT-IOC Centre for Advanced Bioenergy Research
- Indian Oil Corporation Ltd
- Research and Development Centre
- Faridabad 121007
- India
| | - Ruchi Gaur
- DBT-IOC Centre for Advanced Bioenergy Research
- Indian Oil Corporation Ltd
- Research and Development Centre
- Faridabad 121007
- India
| | - Anshu Mathur
- DBT-IOC Centre for Advanced Bioenergy Research
- Indian Oil Corporation Ltd
- Research and Development Centre
- Faridabad 121007
- India
| | - Ravindra Kumar
- DBT-IOC Centre for Advanced Bioenergy Research
- Indian Oil Corporation Ltd
- Research and Development Centre
- Faridabad 121007
- India
| | - Ravi Prakash Gupta
- DBT-IOC Centre for Advanced Bioenergy Research
- Indian Oil Corporation Ltd
- Research and Development Centre
- Faridabad 121007
- India
| | - Deepak K. Tuli
- DBT-IOC Centre for Advanced Bioenergy Research
- Indian Oil Corporation Ltd
- Research and Development Centre
- Faridabad 121007
- India
| | - Alok Satlewal
- DBT-IOC Centre for Advanced Bioenergy Research
- Indian Oil Corporation Ltd
- Research and Development Centre
- Faridabad 121007
- India
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