| Project/Area Number |
59860016
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| Research Category |
Grant-in-Aid for Developmental Scientific Research
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| Allocation Type | Single-year Grants |
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| Research Field |
林産学
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| Research Institution | Tokyo University of Agriculture and Technology |
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Principal Investigator |
HARAGUCHI Takafusa Tokyo University of Agriculture and Technology, Professor, 農学部, 教授 (60014891)
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| Co-Investigator(Kenkyū-buntansha) |
FUKUDA Kiyoharu Tokyo University of Agriculture and Technology, Assistant, 農学部, 助手 (60015097)
MORIKAWA Yasushi Kyowa Fermentation Co., Researcher, 研究開発部, 部員
MOROHOSHI Noriyuki Tokyo University of Agriculture and Technology, Associate Professor, 農学部, 助教授 (30015078)
角 祐一郎 山陽国策パルプ(株), 技術本部, 部長代理
TAKAHASHI Takeshi Tokyo University of Agriculture and Technology, Emeritus Professor, 名誉教授
SUMI Yuichiro Sanyo-Kokusaku Pulp Co., Vice-director
角 裕一郎 山陽国策パルプ(株), 技術本部, 部長代理
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| Project Period (FY) |
1984 – 1986
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| Project Status |
Completed (Fiscal Year 1986)
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| Budget Amount *help |
¥6,700,000 (Direct Cost: ¥6,700,000)
Fiscal Year 1986: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1985: ¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1984: ¥5,100,000 (Direct Cost: ¥5,100,000)
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| Keywords | Wood chips / Biological delignification / Enzymic delignification / Laccase-type ligninase / Direct-fermentation bacteria / エタノール / 直接発酵 / 脱リグニン / リグニン分解酵素 / ラッカーゼ / 嫌気性細胞 |
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| Research Abstract |
Coriolus versicolor was cultivated on wood-chips media and delignification rate was evaluated by means of <TS_(50)> . The value is defined by time necessary for passing a half amount of ground wood particles through sixty mesh sieve, and it is proportioned to degree of delignification.
Laccase <III> , laccase-type ligninase which was isolated from the extra-cellular enzymes of C. versicolor, was studied on its properties, mechanisms of degradation of lignin, and its application to delignification of wood.
Selection of anaerobic bacteria which were able to produce ethanol directly from woody materials. At present, the ability of the bacteria obtained are not very good at making ethanol, and the screening is in process. A pretreatment-delignifi-cation-fermentation process was tentatively proposed.
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