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Watanabe T, Nasukawa M, Yoshida Y, Kogo T, Ogihara J, Kasumi T. Generation of Trichoderma reesei Mutant with Enhanced Xylanase Activity by Using Disparity Mutagenesis. J Appl Glycosci (1999) 2019; 66:59-64. [PMID: 34354521 PMCID: PMC8056916 DOI: 10.5458/jag.jag.jag-2018_0004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Accepted: 12/08/2018] [Indexed: 11/27/2022] Open
Abstract
In the current study, we attempted to enhance the xylanase activity of Trichoderma reesei ATCC66589 by using disparity mutagenesis, wherein a plasmid harboring proofreading-impaired DNA polymerase δ was inserted. Following selection on xylan-rich media and successive plasmid curing, a mutant showing conidiospores strikingly different from those of the parent strain, with many small humped-surface spheres, was generated. Xylanase and β-xylosidase activities of the mutant XM1, cultivated in xylan medium, were 15.8- and 11.0-fold higher than those of the parent strain, respectively. Furthermore, xylanase activity was generated approximately 24 h in advance compared to that in the parent. In contrast, when cultivated in Avicel medium, its xylanase and β-xylosidase activities were 0.14- and 0.33-fold, respectively, compared to those in the parent. Among the xylan component sugars and related polyols, D-xylose and xylobiose exerted a distinct inductive effect on the xylanase activity in Avicel media, while xylitol and L-arabinose did not. Mutagenesis involved in xylose catabolism is suggestive of changes at the gene transcription level. Although the induction mechanism remains unclear in details, disparity mutagenesis may be useful for obtaining T. reesei mutants with high xylanase activity.
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Affiliation(s)
- Taisuke Watanabe
- 1 Applied Microbiology and Biotechnology Laboratory, College of Bioresource Sciences, Nihon University
| | - Masashi Nasukawa
- 1 Applied Microbiology and Biotechnology Laboratory, College of Bioresource Sciences, Nihon University.,2 Biotechnology Center, Chitose Laboratory Incorporated
| | - Yuki Yoshida
- 1 Applied Microbiology and Biotechnology Laboratory, College of Bioresource Sciences, Nihon University
| | - Takashi Kogo
- 1 Applied Microbiology and Biotechnology Laboratory, College of Bioresource Sciences, Nihon University
| | - Jun Ogihara
- 1 Applied Microbiology and Biotechnology Laboratory, College of Bioresource Sciences, Nihon University
| | - Takafumi Kasumi
- 1 Applied Microbiology and Biotechnology Laboratory, College of Bioresource Sciences, Nihon University
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Li J, Yuan X, Dong Z, Mugabe W, Shao T. The effects of fibrolytic enzymes, cellulolytic fungi and bacteria on the fermentation characteristics, structural carbohydrates degradation, and enzymatic conversion yields of Pennisetum sinese silage. BIORESOURCE TECHNOLOGY 2018; 264:123-130. [PMID: 29800772 DOI: 10.1016/j.biortech.2018.05.059] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 05/16/2018] [Accepted: 05/17/2018] [Indexed: 05/03/2023]
Abstract
Biological inoculants were tested on Pennisetum sinese for their effects on fermentation characteristics, structural carbohydrates degradation, and enzymatic conversion yields. Pennisetum sinese was ensiled without additive, Lactobacillus plantarum (Lp), Trichoderma reesei (Tr), fibrolytic enzymes (E), and Enterococcus faecium (Y83) for 90 days. Y83 silages had higher LA and lower AA, ammonia-N and DM loss as compared to E and Tr silages. Tr and E had superior effects for degrading lignocellulose while Y83 had intermediate effects. The first-order exponential decay models (R2 = 0.928-0.998) predicted nonstructural carbohydrates kinetics and demonstrated high water soluble carbohydrate (g/kg DM) preservation potential in Y83 (21.40), followed by Tr (18.94) and E (16.74). Addition of Y83 improved the conversion efficiency of P. sinese silage than Tr and E, indicated by higher glucose and total reducing sugars yield (22.49 and 36.89 w/w % DM, respectively). In conclusion, Y83 can be exploited for the ensiling lignocellulosic biomass before grass processing.
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Affiliation(s)
- Junfeng Li
- Institute of Ensiling and Processing of Grass, College of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Xianjun Yuan
- Institute of Ensiling and Processing of Grass, College of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Zhihao Dong
- Institute of Ensiling and Processing of Grass, College of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Wazha Mugabe
- Institute of Ensiling and Processing of Grass, College of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, China
| | - Tao Shao
- Institute of Ensiling and Processing of Grass, College of Agro-Grassland Science, Nanjing Agricultural University, Nanjing 210095, China.
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Kogo T, Yoshida Y, Koganei K, Matsumoto H, Watanabe T, Ogihara J, Kasumi T. Production of rice straw hydrolysis enzymes by the fungi Trichoderma reesei and Humicola insolens using rice straw as a carbon source. BIORESOURCE TECHNOLOGY 2017; 233:67-73. [PMID: 28258998 DOI: 10.1016/j.biortech.2017.01.075] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2016] [Revised: 01/20/2017] [Accepted: 01/21/2017] [Indexed: 06/06/2023]
Abstract
Rice straw was evaluated as a carbon source for the fungi, Trichoderma reesei and Humicola insolens, to produce enzymes for rice straw hydrolysis. The enzyme activity of T. reesei and H. insolens cultivated in medium containing non-treated rice straw were almost equivalent to the enzyme of T. reesei cultivated in Avicel medium, a form of refined cellulose. The enzyme activity of T. reesei cultivated in medium containing NH4OH-treated rice straw was 4-fold higher than enzyme from cultures grown in Avicel medium. In contrast, H. insolens enzyme from cultures grown in NH4OH-treated rice straw had significantly lower activity compared with non-treated rice straw or Avicel. The combined use of T. reesei and H. insolens enzymes resulted in a significant synergistic enhancement in enzymatic activity. Our data suggest that rice straw is a promising low-cost carbon source for fungal enzyme production for rice straw hydrolysis.
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Affiliation(s)
- Takashi Kogo
- Applied Microbiology and Biotechnology Laboratory, Department of Chemistry and Lifescience, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
| | - Yuki Yoshida
- Applied Microbiology and Biotechnology Laboratory, Department of Chemistry and Lifescience, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
| | - Keisuke Koganei
- Applied Microbiology and Biotechnology Laboratory, Department of Chemistry and Lifescience, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
| | - Hitoshi Matsumoto
- Applied Microbiology and Biotechnology Laboratory, Department of Chemistry and Lifescience, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
| | - Taisuke Watanabe
- Applied Microbiology and Biotechnology Laboratory, Department of Chemistry and Lifescience, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
| | - Jun Ogihara
- Applied Microbiology and Biotechnology Laboratory, Department of Chemistry and Lifescience, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan
| | - Takafumi Kasumi
- Applied Microbiology and Biotechnology Laboratory, Department of Chemistry and Lifescience, Nihon University, 1866 Kameino, Fujisawa, Kanagawa 252-0880, Japan.
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Yadav MP, Hicks KB. Isolation of barley hulls and straw constituents and study of emulsifying properties of their arabinoxylans. Carbohydr Polym 2015; 132:529-36. [DOI: 10.1016/j.carbpol.2015.06.049] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 06/11/2015] [Accepted: 06/18/2015] [Indexed: 10/23/2022]
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Characterization of Starch Granules in Rice Culms for Application of Rice Straw as a Feedstock for Saccharification. Biosci Biotechnol Biochem 2014; 74:1645-51. [DOI: 10.1271/bbb.100257] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Alkaline Pretreatment Improves Saccharification and Ethanol Yield from Waste Money Bills. Biosci Biotechnol Biochem 2014; 77:1397-402. [DOI: 10.1271/bbb.130002] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Alkali Pretreatment of Wheat Straw (Triticum aestivum) at Boiling Temperature for Producing a Bioethanol Precursor. Biosci Biotechnol Biochem 2014; 76:2201-7. [DOI: 10.1271/bbb.120480] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Romaní A, Ruiz HA, Pereira FB, Domingues L, Teixeira JA. Fractionation of Eucalyptus globulus Wood by Glycerol–Water Pretreatment: Optimization and Modeling. Ind Eng Chem Res 2013. [DOI: 10.1021/ie402177f] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Aloia Romaní
- IBB-Institute for Biotechnology
and Bioengineering, Centre
of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Héctor A. Ruiz
- School of Chemistry, Food Research Department, Autonomous University of Coahuila, Saltillo, Coahuila, México, 25280
| | - Francisco B. Pereira
- IBB-Institute for Biotechnology
and Bioengineering, Centre
of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - Lucília Domingues
- IBB-Institute for Biotechnology
and Bioengineering, Centre
of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
| | - José A. Teixeira
- IBB-Institute for Biotechnology
and Bioengineering, Centre
of Biological Engineering, University of Minho, Campus de Gualtar, 4710-057 Braga, Portugal
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Deutschmann R, Dekker RF. From plant biomass to bio-based chemicals: Latest developments in xylan research. Biotechnol Adv 2012; 30:1627-40. [DOI: 10.1016/j.biotechadv.2012.07.001] [Citation(s) in RCA: 195] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2012] [Revised: 06/12/2012] [Accepted: 07/01/2012] [Indexed: 11/26/2022]
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Yang L, Cao J, Jin Y, Chang HM, Jameel H, Phillips R, Li Z. Effects of sodium carbonate pretreatment on the chemical compositions and enzymatic saccharification of rice straw. BIORESOURCE TECHNOLOGY 2012; 124:283-291. [PMID: 22989656 DOI: 10.1016/j.biortech.2012.08.041] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2012] [Revised: 08/09/2012] [Accepted: 08/10/2012] [Indexed: 06/01/2023]
Abstract
The effects of sodium carbonate (Na(2)CO(3)) pretreatment on the chemical compositions and enzymatic saccharification of rice straw were investigated. The enzymatic digestibility of rice straw is enhanced after pretreatment since pretreated solids show significant delignification with high sugar availability. During pretreatment, an increasing temperature and Na(2)CO(3) charge leads to enhanced delignification, whereas an increased degradation of polysaccharides as well, of which xylan acts more susceptible than glucan. The sugar recovery of enzymatic hydrolysis goes up rapidly with the total titratable alkali (TTA) increasing from 0% to 8%, and then it reaches a plateau. The highest sugar recovery of rice straw after pretreatment, 71.7%, 73.2%, and 76.1% for total sugar, glucan, and xylan, respectively, is obtained at 140°C, TTA 8% and cellulase loading of 20 FPU/g-cellulose. In this condition, the corresponding delignification ratio of pretreated solid is 41.8%, while 95% of glucan and 76% of xylan are conserved.
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Affiliation(s)
- Linfeng Yang
- Jiangsu Provincial Key Laboratory of Pulp and Paper Science and Technology, Nanjing Forestry University, Nanjing 210037, China.
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Matsuki J, Park JY, Shiroma R, Ike M, Yamamoto K, Tokuyasu K. Effect of lime treatment and subsequent carbonation on gelatinization and saccharification of starch granules. STARCH-STARKE 2012. [DOI: 10.1002/star.201100152] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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12
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Matsuki J, Shiroma R, Ike M, Tokuyasu K. Improvement of the RT-CaCCO Process for Efficient Glucose Recovery from Starch-rich Whole-crop Rice. J Appl Glycosci (1999) 2012. [DOI: 10.5458/jag.jag.jag-2012_005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
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Park JY, Ike M, Arakane M, Shiroma R, Li Y, Arai-Sanoh Y, Kondo M, Tokuyasu K. DiSC (direct saccharification of culms) process for bioethanol production from rice straw. BIORESOURCE TECHNOLOGY 2011; 102:6502-6507. [PMID: 21498073 DOI: 10.1016/j.biortech.2011.03.065] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/17/2010] [Revised: 03/18/2011] [Accepted: 03/19/2011] [Indexed: 05/30/2023]
Abstract
A simple process (the direct-saccharification-of-culms (DiSC) process) to produce ethanol from rice straw culms, accumulating significant amounts of soft carbohydrates (SCs: glucose, fructose, sucrose, starch and β-1,3-1,4-glucan) was developed. This study focused on fully mature culms of cv. Leafstar, containing 69.2% (w/w of dried culms) hexoses from SCs and cellulose. Commercially-available wind-separation equipment successfully prepared a culm-rich fraction with a SC recovery of 83.1% (w/w) from rice straw flakes (54.1% of total weight of rice straw). The fraction was suspended in water (20%, w/w) for starch liquefaction, and the suspension was subjected to a simultaneous saccharification and fermentation with yeast, yielding 5.6% (w/v) ethanol (86% of the theoretical yield from whole hexoses in the fraction) after 24h fermentation. Thus, the DiSC process produced highly-concentrated ethanol from rice straw in a one vat process without any harsh thermo-chemical pretreatments.
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Affiliation(s)
- Jeung-yil Park
- National Food Research Institute, National Agriculture and Food Research Organization (NARO), 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan
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Shiroma R, Park JY, Al-Haq MI, Arakane M, Ike M, Tokuyasu K. RT-CaCCO process: an improved CaCCO process for rice straw by its incorporation with a step of lime pretreatment at room temperature. BIORESOURCE TECHNOLOGY 2011; 102:2943-2949. [PMID: 21147527 DOI: 10.1016/j.biortech.2010.11.086] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2010] [Revised: 11/18/2010] [Accepted: 11/19/2010] [Indexed: 05/30/2023]
Abstract
We improved the CaCCO process for rice straw by its incorporation with a step of lime pretreatment at room temperature (RT). We firstly optimized the RT-lime pretreatment for the lignocellulosic part. When the ratio of lime/dry-biomass was 0.2 (w/w), the RT lime-pretreatment for 7-d resulted in an effect on the enzymatic saccharification of cellulose and xylan equivalent to that of the pretreatment at 120°C for 1h. Sucrose, starch and β-1,3-1,4-glucan, which could be often detected in rice straw, were mostly stable under the RT-lime pretreatment condition. Then, the pretreatment condition in the conventional CaCCO process was modified by the adaptation of the optimized RT lime-pretreatment, resulting in significantly better carbohydrate recoveries via enzymatic saccharification than those of the CaCCO process (120°C for 1 h). Thus, the improved CaCCO process (the RT-CaCCO process) could preserve/pretreat the feedstock at RT in a wet form with minimum loss of carbohydrates.
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Affiliation(s)
- Riki Shiroma
- National Food Research Institute, National Agriculture and Food Research Organization (NARO), Tsukuba, Ibaraki, Japan
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Park JY, Shiroma R, Al-Haq MI, Zhang Y, Ike M, Arai-Sanoh Y, Ida A, Kondo M, Tokuyasu K. A novel lime pretreatment for subsequent bioethanol production from rice straw--calcium capturing by carbonation (CaCCO) process. BIORESOURCE TECHNOLOGY 2010; 101:6805-11. [PMID: 20382526 DOI: 10.1016/j.biortech.2010.03.098] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2010] [Revised: 03/06/2010] [Accepted: 03/20/2010] [Indexed: 05/05/2023]
Abstract
In order to establish an efficient bioethanol production system for rice straw, we developed a novel lime-pretreatment process (CaCCO process) that did not require a solid-liquid-separation step. This process adopted a step in which after pretreatment lime was neutralized by carbonation, resulting in a final pH of about 6. CaCO(3) produced by the process was kept in the reaction vessel, and no significant inhibitory effects on enzymatic saccharification and fermentation were observed. In the CaCCO process, solubilized carbohydrates, such as xylan, starch, and sucrose were also kept in the vessel, enabling high recoveries of monomeric sugars. Simultaneous saccharification and fermentation (SSF) of pretreated rice straw, 10% (g-rice straw/g-water), using Saccharomyces cerevisiae and Pichia stipitis yielded 19.1 g L(-1) ethanol that was 74% of the theoretical yield from glucose and xylose. Thus, this process represents a novel pretreatment method to utilize not only cellulose but also xylan, starch, and sucrose from biomass.
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Affiliation(s)
- Jeung-yil Park
- National Food Research Institute, National Agriculture and Food Research Organization (NARO), 2-1-12 Kannondai, Tsukuba, Ibaraki 305-8642, Japan
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