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Production of cellulose nanofibers from Aspen and Bode chopsticks using a high temperature and high pressure steam treatment combined with milling. Carbohydr Polym 2018; 194:303-310. [DOI: 10.1016/j.carbpol.2018.04.047] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 04/10/2018] [Accepted: 04/10/2018] [Indexed: 11/22/2022]
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Sasaki C, Okumura R, Asada C, Nakamura Y. Steam explosion treatment for ethanol production from branches pruned from pear trees by simultaneous saccharification and fermentation. Biosci Biotechnol Biochem 2015; 78:160-6. [PMID: 25036499 DOI: 10.1080/09168451.2014.877818] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
This study investigated the production of ethanol from unutilized branches pruned from pear trees by steam explosion pretreatment. Steam pressures of 25, 35, and 45 atm were applied for 5 min, followed by enzymatic saccharification of the extracted residues with cellulase (Cellic CTec2). High glucose recoveries, of 93.3, 99.7, and 87.1%, of the total sugar derived from the cellulose were obtained from water- and methanol-extracted residues after steam explosion at 25, 35, and 45 tm, respectively. These values corresponded to 34.9, 34.3, and 27.1 g of glucose per 100 g of dry steam-exploded branches. Simultaneous saccharification and fermentation experiments were done on water-extracted residues and water- and methanol-extracted residues by Kluyveromyces marxianus NBRC 1777. An overall highest theoretical ethanol yield of 76% of the total sugar derived from cellulose was achieved when 100 g/L of water- and methanol-washed residues from 35 atm-exploded pear branches was used as substrate.
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Affiliation(s)
- Chizuru Sasaki
- a Department of Life System , Institute of Technology and Science, The University of Tokushima , Tokushima , Japan
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Asada C, Basnet S, Otsuka M, Sasaki C, Nakamura Y. Epoxy resin synthesis using low molecular weight lignin separated from various lignocellulosic materials. Int J Biol Macromol 2015; 74:413-9. [DOI: 10.1016/j.ijbiomac.2014.12.039] [Citation(s) in RCA: 89] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 12/20/2014] [Accepted: 12/26/2014] [Indexed: 11/26/2022]
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Asada C, Sasaki C, Takamatsu T, Nakamura Y. Conversion of steam-exploded cedar into ethanol using simultaneous saccharification, fermentation and detoxification process. BIORESOURCE TECHNOLOGY 2015; 176:203-209. [PMID: 25461004 DOI: 10.1016/j.biortech.2014.11.039] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 11/05/2014] [Accepted: 11/07/2014] [Indexed: 06/04/2023]
Abstract
In this study, we investigated the simultaneous saccharification, fermentation and detoxification SSDF process of steam-exploded cedar using a detoxification microorganism, Ureibacillus thermosphaericus A1, to facilitate efficient ethanol production. Steam explosion was applied as a pretreatment before enzymatic saccharification followed by alcohol fermentation. The highest glucose conversion rate was observed in the sample pretreated with a steam pressure of 45atm for 5min. Alcohol production by a heat-tolerant yeast, Saccharomyces cerevisiae BA11, was inhibited strongly by inhibitory materials present in the steam-exploded cedar, such as formic acid, furfural, and 5-hydroxymethylfurfural. The maximum amount of ethanol, i.e., 0.155g ethanol/g dry steam-exploded cedar, which corresponded to 74% of the theoretical ethanol yield, was obtained using the SSDF when U. thermosphaericus A1 degraded the inhibitory materials. A fed batch SSDF culture, in which U. thermosphaericus A1 was used to maintain low concentrations of inhibitory materials, was effective for increasing the ethanol concentration.
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Affiliation(s)
- Chikako Asada
- Department of Life System, Institute of Technology and Science, The University of Tokushima, 2-1 Minamijosanjima-cho, Tokushima 770-8506, Japan
| | - Chizuru Sasaki
- Department of Life System, Institute of Technology and Science, The University of Tokushima, 2-1 Minamijosanjima-cho, Tokushima 770-8506, Japan
| | - Tomoki Takamatsu
- Department of Life System, Institute of Technology and Science, The University of Tokushima, 2-1 Minamijosanjima-cho, Tokushima 770-8506, Japan
| | - Yoshitoshi Nakamura
- Department of Life System, Institute of Technology and Science, The University of Tokushima, 2-1 Minamijosanjima-cho, Tokushima 770-8506, Japan.
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Phummala K, Imai T, Reungsang A, Chairattanamanokorn P, Sekine M, Higuchi T, Yamamoto K, Kanno A. Delignification of disposable wooden chopsticks waste for fermentative hydrogen production by an enriched culture from a hot spring. J Environ Sci (China) 2014; 26:1361-1368. [PMID: 25079849 DOI: 10.1016/s1001-0742(13)60612-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Hydrogen (H2) production from lignocellulosic materials may be enhanced by removing lignin and increasing the porosity of the material prior to enzymatic hydrolysis. Alkaline pretreatment conditions, used to delignify disposable wooden chopsticks (DWC) waste, were investigated. The effects of NaOH concentration, temperature and retention time were examined and it was found that retention time had no effect on lignin removal or carbohydrate released in enzymatic hydrolysate. The highest percentage of lignin removal (41%) was obtained with 2% NaOH at 100°C, correlated with the highest carbohydrate released (67 mg/g pretreated DWC) in the hydrolysate. An enriched culture from a hot spring was used as inoculum for fermentative H2 production, and its optimum initial pH and temperature were determined to be 7.0 and 50°C, respectively. Furthermore, enzymatic hydrolysate from pretreated DWC was successfully demonstrated as a substrate for fermentative H2 production by the enriched culture. The maximum H2 yield and production rate were achieved at 195 mL H2/g total sugars consumed and 116 mL H2/(L·day), respectively.
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Affiliation(s)
- Kanthima Phummala
- Division of Environmental Science and Engineering, Graduate School of Science and Engineering, Yamaguchi University, Yamaguchi 7558611, Japan.
| | - Tsuyoshi Imai
- Division of Environmental Science and Engineering, Graduate School of Science and Engineering, Yamaguchi University, Yamaguchi 7558611, Japan.
| | - Alissara Reungsang
- Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen 40000, Thailand
| | | | - Masahiko Sekine
- Division of Civil and Environmental Engineering, Graduate School of Science and Engineering, Yamaguchi University, Yamaguchi 7558611, Japan
| | - Takaya Higuchi
- Division of Environmental Science and Engineering, Graduate School of Science and Engineering, Yamaguchi University, Yamaguchi 7558611, Japan
| | - Koichi Yamamoto
- Division of Civil and Environmental Engineering, Graduate School of Science and Engineering, Yamaguchi University, Yamaguchi 7558611, Japan
| | - Ariyo Kanno
- Division of Civil and Environmental Engineering, Graduate School of Science and Engineering, Yamaguchi University, Yamaguchi 7558611, Japan
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Ma BJ, Sun Y, Lin KY, Li B, Liu WY. Physicochemical pretreatments and hydrolysis of furfural residues via carbon-based sulfonated solid acid. BIORESOURCE TECHNOLOGY 2014; 156:189-194. [PMID: 24508657 DOI: 10.1016/j.biortech.2014.01.059] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2013] [Revised: 01/13/2014] [Accepted: 01/15/2014] [Indexed: 06/03/2023]
Abstract
Potential commercial physicochemical pretreatment methods, NaOH/microwave and NaOH/ultrasound were developed, and the carbon-based sulfonated solid acid catalysts were prepared for furfural residues conversion into reducing sugars. After the two optimum pretreatments, both the content of cellulose increased (74.03%, 72.28%, respectively) and the content of hemicellulose (94.11%, 94.17% of removal rate, respectively) and lignin (91.75%, 92.09% of removal rate, respectively) decreased in furfural residues. The reducing sugar yields of furfural residues with the two physicochemical pretreatments on coal tar-based solid acid reached 33.94% and 33.13%, respectively, higher than that pretreated via NaOH alone (27%) and comparable to that pretreated via NaOH/H2O2 (35.67%). The XRD patterns, IR spectra and SEM images show microwave and ultrasound improve the pretreatment effect. The results demonstrate the carbon-based sulfonated solid acids and the physicochemical pretreatments are green, effective, low-cost for furfural residues conversion.
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Affiliation(s)
- Bao Jun Ma
- State Key Laboratory Cultivation Base of Natural Gas Conversion, College of Chemistry, Ningxia University, Yinchuan 750021, China.
| | - Yuan Sun
- State Key Laboratory Cultivation Base of Natural Gas Conversion, College of Chemistry, Ningxia University, Yinchuan 750021, China
| | - Ke Ying Lin
- State Key Laboratory Cultivation Base of Natural Gas Conversion, College of Chemistry, Ningxia University, Yinchuan 750021, China
| | - Bing Li
- State Key Laboratory Cultivation Base of Natural Gas Conversion, College of Chemistry, Ningxia University, Yinchuan 750021, China
| | - Wan Yi Liu
- State Key Laboratory Cultivation Base of Natural Gas Conversion, College of Chemistry, Ningxia University, Yinchuan 750021, China.
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Yu HL, Tang Y, Xing Y, Zhu LW, Jiang JX. Improvement of the enzymatic hydrolysis of furfural residues by pretreatment with combined green liquor and hydrogen peroxide. BIORESOURCE TECHNOLOGY 2013; 147:29-36. [PMID: 23985372 DOI: 10.1016/j.biortech.2013.08.013] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Revised: 08/01/2013] [Accepted: 08/03/2013] [Indexed: 05/17/2023]
Abstract
A potential commercial pretreatment for furfural residues (FRs) was investigated by using a combination of green liquor and hydrogen peroxide (GL-H2O2). The results showed that 56.2% of lignin removal was achieved when the sample was treated with 0.6 g H2O2/g-DS (dry substrate) and 6 mL GL/g-DS at 80 °C for 3 h. After 96 h hydrolysis with 18 FPU/g-cellulose for cellulase, 27 CBU/g-cellulose for β-glucosidase, the glucose yield increased from 71.2% to 83.6%. Ethylenediaminetetraacetic acid was used to reduce the degradation of H2O2, the glucose yield increased to 90.4% after the addition of 1% (w/w). The untreated FRs could bind more easily to cellulase than pretreated FRs could. The structural changes on the surface of sample were characterized by X-ray photoelectron spectroscopy. The results indicated that the surface lignin could be effectively removed during pretreatment, thereby decreasing the enzyme-lignin binding activity. Moreover, the carbonyl from lignin plays an important role in cellulase binding.
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Affiliation(s)
- Hai-Long Yu
- Department of Chemistry and Chemical Engineering, Beijing Forestry University, Beijing 100083, China
| | - Yong Tang
- Department of Chemistry and Chemical Engineering, Beijing Forestry University, Beijing 100083, China; GuangXi Key Laboratory of Chemistry and Engineering of Forest Products, Nanning 530006, China
| | - Yang Xing
- Department of Chemistry and Chemical Engineering, Beijing Forestry University, Beijing 100083, China
| | - Li-Wei Zhu
- Department of Chemistry and Chemical Engineering, Beijing Forestry University, Beijing 100083, China
| | - Jian-Xin Jiang
- Department of Chemistry and Chemical Engineering, Beijing Forestry University, Beijing 100083, China; GuangXi Key Laboratory of Chemistry and Engineering of Forest Products, Nanning 530006, China.
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Li HQ, Li CL, Sang T, Xu J. Pretreatment on Miscanthus lutarioriparious by liquid hot water for efficient ethanol production. BIOTECHNOLOGY FOR BIOFUELS 2013; 6:76. [PMID: 23663476 PMCID: PMC3664608 DOI: 10.1186/1754-6834-6-76] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/04/2013] [Accepted: 05/08/2013] [Indexed: 05/08/2023]
Abstract
BACKGROUND The C4 perennial grass Miscanthus giganteus has proved to be a promising bio-energy crop. However, the biomass recalcitrance is a major challenge in biofuel production. Effective pretreatment is necessary for achieving a high efficiency in converting the crop to fermentable sugars, and subsequently biofuels and other valued products. RESULTS Miscanthus lutarioriparious was pretreated with a liquid hot water (LHW) reactor. Between the pretreatment severity (PS) of 2.56-4.71, the solid recovery was reduced; cellulose recovery remained nearly unchanged; and the Klason lignin content was slightly increased which was mainly due to the dissolving of hemicellulose and the production of a small amount of pseudo-lignin. The result shows that a LHW PS of 4.71 could completely degrade the hemicellulose in Miscanthus. Hemicellulose removal dislodged the enzymatic barrier of cellulose, and the ethanol conversion of 98.27% was obtained. CONCLUSIONS Our study demonstrated that LHW served as an effective pretreatment in case that Miscanthus lutarioriparious was used for ethanol production by simultaneous saccharification and fermentation. The combination and the pretreatment method of Miscanthus feedstock holds a great potential for biofuel production.
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Affiliation(s)
- Hong-Qiang Li
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
| | - Cheng-Lan Li
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
| | - Tao Sang
- Key Laboratory Plant Resources and State Key Laboratory of Systematic & Evolutionary Botany, Institute of Botany, Chinese Academy of Sciences, Beijing, 100093, People’s Republic of China
| | - Jian Xu
- National Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
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Noda Y, Asada C, Sasaki C, Hashimoto S, Nakamura Y. Extraction method for increasing antioxidant activity of raw garlic using steam explosion. Biochem Eng J 2013. [DOI: 10.1016/j.bej.2013.01.013] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Direct hydrolysis of cellulose to glucose using ultra-high temperature and pressure steam explosion. Carbohydr Polym 2012; 89:298-301. [DOI: 10.1016/j.carbpol.2012.02.040] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 02/16/2012] [Accepted: 02/18/2012] [Indexed: 11/23/2022]
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Effect of steam explosion pretreatment with ultra-high temperature and pressure on effective utilization of softwood biomass. Biochem Eng J 2012. [DOI: 10.1016/j.bej.2011.09.013] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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Asada C, Asakawa A, Sasaki C, Nakamura Y. Characterization of the steam-exploded spent Shiitake mushroom medium and its efficient conversion to ethanol. BIORESOURCE TECHNOLOGY 2011; 102:10052-10056. [PMID: 21890352 DOI: 10.1016/j.biortech.2011.08.020] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2011] [Revised: 07/30/2011] [Accepted: 08/03/2011] [Indexed: 05/31/2023]
Abstract
Spent Shiitake mushroom medium was subjected to steam explosion followed by simultaneous saccharification and fermentation (SSF) using Meicelase and Saccahromyces cerevisiae AM12. Water extraction of the medium exposed to steam at 20 atm for 5 min enhanced the saccharification rate by about 20% compared to steam-exploded medium before water extraction and resulted in the production of 23.8 g/l ethanol from a substrate concentration of 100g/l. This corresponded to 87.6% of the theoretical ethanol yield, i.e., 15.9 g ethanol was obtained from 100g of spent Shiitake mushroom medium. Spent Shiitake mushroom medium subjected to steam explosion and then water extraction appears to be a candidate for efficient bioconversion to ethanol.
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Affiliation(s)
- Chikako Asada
- Department of Life System, Institute of Technology and Science, The University of Tokushima, 2-1 Minamijosanjima-cho, Tokushima 770-8506, Japan
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Yu Z, Jameel H, Chang HM, Park S. The effect of delignification of forest biomass on enzymatic hydrolysis. BIORESOURCE TECHNOLOGY 2011; 102:9083-9. [PMID: 21802941 DOI: 10.1016/j.biortech.2011.07.001] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/27/2011] [Revised: 06/28/2011] [Accepted: 07/05/2011] [Indexed: 05/13/2023]
Abstract
The effect of delignification methods on enzymatic hydrolysis of forest biomass was investigated using softwood and hardwood that were pretreated at an alkaline condition followed by sodium chlorite or ozone delignification. Both delignifications improved enzymatic hydrolysis especially for softwood, while pretreatment alone was found effective for hardwood. High enzymatic conversion was achieved by sodium chlorite delignification when the lignin content was reduced to 15%, which is corresponding to 0.30-0.35 g/g accessible pore volume, and further delignification showed a marginal effect. Sample crystallinity index increased with lignin removal, but it did not show a correlation with the overall carbohydrate conversion of enzymatic hydrolysis.
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Affiliation(s)
- Zhiying Yu
- Department of Forest Biomaterials, North Carolina State University, Raleigh, NC 27695-8005, USA
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