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1.发明公开
公开(公告)号：EP3725889A1
公开(公告)日：2020-10-21
申请号：EP18887417.6
申请日：2018-12-10
发明人： NISHINO, Takashi , IZUMI, Noriaki , TAJIRI, Hironori , TSUJITA, Shoji , ODA, Asuka , MASAMOTO, Manabu , WARATANI, Yusuke
摘要： An object of the present invention is to provide a saccharified solution production method in which cellulosic biomass is solubilized by enzymatic hydrolysis of cellulose contained in the cellulosic biomass, the method being adapted to quickly solubilize the biomass and give a slurry while keeping a high solids concentration in a reaction vessel. The biomass pulverized and an aqueous solution containing a cellulose-hydrolyzing enzyme are mixed in one reaction vessel including no baffle plate disposed in its interior, and the cellulosic biomass is solubilized under stirring. Afterwards, the contents of the reaction vessel are transferred to another reaction vessel including a baffle plate disposed in its interior, and enzymatic hydrolysis of cellulose is allowed to proceed. The solids concentration in the first reaction vessel is preferably 15 to 30% by mass. The efficiency of stirring during enzymatic hydrolysis of cellulose is enhanced, and thus the amount of sugar production can be increased.
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2.发明公开
公开(公告)号：EP3730622A1
公开(公告)日：2020-10-28
申请号：EP18892535.8
申请日：2018-12-10
发明人： NISHINO, Takashi , IZUMI, Noriaki , TAJIRI, Hironori , TSUJITA, Shoji , ODA, Asuka , MASAMOTO, Manabu , WARATANI, Yusuke
摘要： An object of the present invention is to provide a bioethanol production method using lignocellulosic biomass as a raw material, the method being adapted to increase the ethanol concentration of a fermentation liquid obtained in a fermentation step and reduce the distillation load without having to use specialized equipment in solubilizing the biomass by enzymatic hydrolysis of cellulose contained in the biomass. When a solid residue of the cellulosic biomass, from which hemicellulose has been removed, is mixed with an aqueous solution containing a cellulose-hydrolyzing enzyme in a reaction vessel, ethanol is added in an amount of 3 to 6% by mass. Bacterial proliferation is suppressed during hydrolysis of cellulose, and the ethanol concentration achieved in ethanol fermentation of a saccharified solution is increased, so that the distillation load is reduced. The ethanol added at the time of hydrolysis can be collected during distillation of the alcoholic fermentation liquid and reused.
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