JP2013226113A - 高効率バイオエタノール製造方法 - Google Patents
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- JP2013226113A JP2013226113A JP2012192564A JP2012192564A JP2013226113A JP 2013226113 A JP2013226113 A JP 2013226113A JP 2012192564 A JP2012192564 A JP 2012192564A JP 2012192564 A JP2012192564 A JP 2012192564A JP 2013226113 A JP2013226113 A JP 2013226113A
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
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- C12P7/00—Preparation of oxygen-containing organic compounds
- C12P7/02—Preparation of oxygen-containing organic compounds containing a hydroxy group
- C12P7/04—Preparation of oxygen-containing organic compounds containing a hydroxy group acyclic
- C12P7/06—Ethanol, i.e. non-beverage
- C12P7/08—Ethanol, i.e. non-beverage produced as by-product or from waste or cellulosic material substrate
- C12P7/10—Ethanol, i.e. non-beverage produced as by-product or from waste or cellulosic material substrate substrate containing cellulosic material
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
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Abstract
【解決手段】糖化処理開始時から終了時まで、糖化溶液中に生成した有機酸濃度を測定し、各時点の有機酸濃度値から、有機酸濃度の平均変化率を求め、平均変化率を指標として、発酵菌を糖化溶液に投入する至適時間を求め、発酵菌を投入する。
【選択図】 図5
Description
=(1/(1+10pH-pKa))×(全有機酸濃度) ・・・・(式1)
Claims (6)
- 基質としてのリグノセルロース系バイオマスから、糖化前処理物を得る前処理工程と、
前記糖化前処理物を糖化酵素で糖化処理することによって糖化溶液を得る糖化工程と、
前記糖化溶液を同一槽内で、発酵菌により発酵処理することによってアルコールを含む発酵溶液を得る発酵工程と、
からなるリグノセルロース系バイオマスにおけるアルコールの製造方法において、
糖化処理開始時から終了時まで、前記糖化溶液中に生成した有機酸濃度値を測定手段によって求める測定工程と、
前記測定手段によって求められた各時点の前記有機酸濃度値から、単位時間あたりの有機酸濃度の平均変化率を予め求め、
前記平均変化率が増加する前に、発酵菌が増殖する時間を考慮して、発酵菌を投入する時期を決定し、前記発酵菌を投入する発酵菌投入工程を含むことを特徴とする、
リグノセルロース系バイオマスにおけるアルコールの製造方法。 - 請求項1記載のリグノセルロース系バイオマスにおけるアルコールの製造方法において、
前記発酵菌投入工程は、糖化工程開始後、糖濃度が発酵菌が増殖し得る濃度に達した後、前記平均変化率が増加する前に、発酵菌が増殖する時間を考慮して、前記発酵菌を投入する発酵菌投入工程を含むことを特徴とする、
リグノセルロース系バイオマスにおけるアルコールの製造方法。 - 請求項1記載のリグノセルロース系バイオマスにおけるアルコールの製造方法において、
発酵菌投入工程は、前記単位時間あたりの有機酸濃度の平均変化率から比を求め、比が20に達する時期より、発酵菌が増殖する時間だけ遡って行うことを特徴とする、
リグノセルロース系バイオマスにおけるアルコールの製造方法。 - 請求項2記載のリグノセルロース系バイオマスにおけるアルコールの製造方法において、
前記有機酸濃度値は、前記糖化溶液のpHから求められる有機酸の非解離度と、前記糖化溶液で実測した非解離型有機酸の濃度との積から求めることを特徴とする、
リグノセルロース系バイオマスにおけるアルコールの製造方法。 - 請求項1乃至4いずれか1項記載のリグノセルロース系バイオマスにおけるアルコールの製造方法において、
前記平均変化率を求める有機酸濃度値として、酢酸、蟻酸、乳酸、コハク酸、酒石酸、クエン酸又はマレイン酸を用いることを特徴とする、リグノセルロース系バイオマスにおけるアルコールの製造方法。 - 請求項1乃至5いずれか1項記載のリグノセルロース系バイオマスにおけるアルコールの製造方法において、
前記発酵菌を投入する発酵菌投入工程は、前記平均変化率が増加する時点から、5〜50時間前であることを特徴とする、リグノセルロース系バイオマスにおけるアルコールの製造方法。
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JP2012192564A JP6014426B2 (ja) | 2012-03-30 | 2012-08-31 | 高効率バイオエタノール製造方法 |
US13/791,273 US20130260365A1 (en) | 2012-03-30 | 2013-03-08 | Highly efficient process for producing bioethanol |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2015173624A (ja) * | 2014-03-14 | 2015-10-05 | 本田技研工業株式会社 | バイオエタノールの製造方法 |
JP2015186476A (ja) * | 2014-03-14 | 2015-10-29 | 本田技研工業株式会社 | 微生物の増殖方法 |
WO2016163622A1 (ko) * | 2015-04-09 | 2016-10-13 | 한국화학연구원 | 오염 미생물의 대사산물 생성을 최소화하는 바이오매스의 효소당화 방법 및 그 장치 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2009112200A (ja) * | 2007-11-02 | 2009-05-28 | Nippon Steel Engineering Co Ltd | エタノール製造方法 |
JP2009142219A (ja) * | 2007-12-14 | 2009-07-02 | National Agriculture & Food Research Organization | アルコール発酵に適した新規酵母及びそれを用いたアルコール製造方法 |
JP2010246421A (ja) * | 2009-04-13 | 2010-11-04 | Hitachi Zosen Corp | ごみ焼却施設におけるセルロース系エタノールの製造方法 |
JP2011167096A (ja) * | 2010-02-17 | 2011-09-01 | Kobe Univ | バイオマスからのエタノールの生産方法 |
JP2012050376A (ja) * | 2010-08-31 | 2012-03-15 | Kansai Chemical Engineering Co Ltd | エタノールの製造方法 |
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WO2009003167A1 (en) * | 2007-06-27 | 2008-12-31 | Novozymes A/S | Methods for producing fermentation products |
US20110039320A1 (en) * | 2007-10-12 | 2011-02-17 | Mian Li | Methods and Compositions for Enhanced Production of Organic Substances From Fermenting Microorganisms |
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Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009112200A (ja) * | 2007-11-02 | 2009-05-28 | Nippon Steel Engineering Co Ltd | エタノール製造方法 |
JP2009142219A (ja) * | 2007-12-14 | 2009-07-02 | National Agriculture & Food Research Organization | アルコール発酵に適した新規酵母及びそれを用いたアルコール製造方法 |
JP2010246421A (ja) * | 2009-04-13 | 2010-11-04 | Hitachi Zosen Corp | ごみ焼却施設におけるセルロース系エタノールの製造方法 |
JP2011167096A (ja) * | 2010-02-17 | 2011-09-01 | Kobe Univ | バイオマスからのエタノールの生産方法 |
JP2012050376A (ja) * | 2010-08-31 | 2012-03-15 | Kansai Chemical Engineering Co Ltd | エタノールの製造方法 |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015173624A (ja) * | 2014-03-14 | 2015-10-05 | 本田技研工業株式会社 | バイオエタノールの製造方法 |
JP2015186476A (ja) * | 2014-03-14 | 2015-10-29 | 本田技研工業株式会社 | 微生物の増殖方法 |
WO2016163622A1 (ko) * | 2015-04-09 | 2016-10-13 | 한국화학연구원 | 오염 미생물의 대사산물 생성을 최소화하는 바이오매스의 효소당화 방법 및 그 장치 |
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