Effects of residual lignin and cellulose swelling on the rate of enzymatic saccharification of softwood and hardwood acid sulfite pulps
Abstract We estimated the effect of residual lignin and pulp swelling on the rate of enzymatic saccharification to increase production of ethanol from acid sulfite pulp (SP) by means of enzymatic treatment. The resolution ratio of hardwood (Acacia mearnsii) SP after the enzymatic treatment was lower...
| Hlavní autoři: | , , |
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| Médium: | Článek |
| Jazyk: | English |
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SpringerOpen
2020-09-01
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| Edice: | Journal of Wood Science |
| Témata: | |
| On-line přístup: | http://link.springer.com/article/10.1186/s10086-020-01912-0 |
| _version_ | 1828899328154927104 |
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| author | Keishi Tanifuji Akiko Nakagawa-izumi Hiroshi Ohi |
| author_facet | Keishi Tanifuji Akiko Nakagawa-izumi Hiroshi Ohi |
| author_sort | Keishi Tanifuji |
| collection | DOAJ |
| description | Abstract We estimated the effect of residual lignin and pulp swelling on the rate of enzymatic saccharification to increase production of ethanol from acid sulfite pulp (SP) by means of enzymatic treatment. The resolution ratio of hardwood (Acacia mearnsii) SP after the enzymatic treatment was lower compared to softwood (Larix leptolepis) SP even though lignin content of hardwood SP was lower. The pyrolysis–gas chromatography/mass spectrometry (Py-GC/MS) analysis revealed that the residual lignin in hardwood SP could more easily adsorb enzyme compared to softwood SP, and the residual lignin in hardwood SP should interfere with the binding of the enzyme to cellulose. The beating treatment of pulp increased the swelling of pulp. The enzymatic saccharification rate was increased by the beating treatment. On the other hand, the delignification treatment was more effective than the beating treatment at enhancing enzymatic saccharification of both hardwood and softwood SPs. We found that the delignification process should be considered a high-priority technique for enhancing enzymatic saccharification of SP. |
| first_indexed | 2024-12-13T15:29:35Z |
| format | Article |
| id | doaj.art-2eede7b51ea74b9db292b41d6a575c5c |
| institution | Directory Open Access Journal |
| issn | 1435-0211 1611-4663 |
| language | English |
| last_indexed | 2024-12-13T15:29:35Z |
| publishDate | 2020-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of Wood Science |
| spelling | doaj.art-2eede7b51ea74b9db292b41d6a575c5c2022-12-21T23:40:13ZengSpringerOpenJournal of Wood Science1435-02111611-46632020-09-0166111010.1186/s10086-020-01912-0Effects of residual lignin and cellulose swelling on the rate of enzymatic saccharification of softwood and hardwood acid sulfite pulpsKeishi Tanifuji0Akiko Nakagawa-izumi1Hiroshi Ohi2Graduate School of Life and Environmental Sciences, University of TsukubaGraduate School of Life and Environmental Sciences, University of TsukubaGraduate School of Life and Environmental Sciences, University of TsukubaAbstract We estimated the effect of residual lignin and pulp swelling on the rate of enzymatic saccharification to increase production of ethanol from acid sulfite pulp (SP) by means of enzymatic treatment. The resolution ratio of hardwood (Acacia mearnsii) SP after the enzymatic treatment was lower compared to softwood (Larix leptolepis) SP even though lignin content of hardwood SP was lower. The pyrolysis–gas chromatography/mass spectrometry (Py-GC/MS) analysis revealed that the residual lignin in hardwood SP could more easily adsorb enzyme compared to softwood SP, and the residual lignin in hardwood SP should interfere with the binding of the enzyme to cellulose. The beating treatment of pulp increased the swelling of pulp. The enzymatic saccharification rate was increased by the beating treatment. On the other hand, the delignification treatment was more effective than the beating treatment at enhancing enzymatic saccharification of both hardwood and softwood SPs. We found that the delignification process should be considered a high-priority technique for enhancing enzymatic saccharification of SP.http://link.springer.com/article/10.1186/s10086-020-01912-0Acid sulfite pulpEnzymatic saccharificationCellulaseAmount of enzyme adsorbed onto lignin |
| spellingShingle | Keishi Tanifuji Akiko Nakagawa-izumi Hiroshi Ohi Effects of residual lignin and cellulose swelling on the rate of enzymatic saccharification of softwood and hardwood acid sulfite pulps Journal of Wood Science Acid sulfite pulp Enzymatic saccharification Cellulase Amount of enzyme adsorbed onto lignin |
| title | Effects of residual lignin and cellulose swelling on the rate of enzymatic saccharification of softwood and hardwood acid sulfite pulps |
| title_full | Effects of residual lignin and cellulose swelling on the rate of enzymatic saccharification of softwood and hardwood acid sulfite pulps |
| title_fullStr | Effects of residual lignin and cellulose swelling on the rate of enzymatic saccharification of softwood and hardwood acid sulfite pulps |
| title_full_unstemmed | Effects of residual lignin and cellulose swelling on the rate of enzymatic saccharification of softwood and hardwood acid sulfite pulps |
| title_short | Effects of residual lignin and cellulose swelling on the rate of enzymatic saccharification of softwood and hardwood acid sulfite pulps |
| title_sort | effects of residual lignin and cellulose swelling on the rate of enzymatic saccharification of softwood and hardwood acid sulfite pulps |
| topic | Acid sulfite pulp Enzymatic saccharification Cellulase Amount of enzyme adsorbed onto lignin |
| url | http://link.springer.com/article/10.1186/s10086-020-01912-0 |
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