JP2011500029A - 発酵微生物からの有機物質の生成を高める方法 - Google Patents
発酵微生物からの有機物質の生成を高める方法 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12P—FERMENTATION OR ENZYME-USING PROCESSES TO SYNTHESISE A DESIRED CHEMICAL COMPOUND OR COMPOSITION OR TO SEPARATE OPTICAL ISOMERS FROM A RACEMIC MIXTURE
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
【選択図】図1
Description
グルコース/ソホロースの調製
60%(W/W)グルコース溶液を121℃、30分で滅菌した。この温度を65℃に下げ、1リットル当たり10gの総タンパク質(全体セルラーゼはT.reeseiにより生成された)を添加した。この混合物をゆっくり撹拌し、65℃で3日間維持した。ソホロース含量はこの60%グルコース溶液中、12g/Lであると測定された。
糸状菌を実施例1で説明したように育成した。細胞を溶解するよりはむしろ、全発酵ブロスの内容物をろ過して、細胞及び大きな細胞の残骸をろ過して精製発酵ブロスを調製した。所望のセルラーゼ及びグルコシダーゼはトリコデルマ細胞から分泌されているので、セルラーゼ分解活性は精製された発酵ブロスの中に残っている。精製発酵ブロスの中に含まれている酵素は10kDaカットオフメンブランでウルトラろ過により濃縮された。
同時糖化発酵(SSF)は250mlフラスコにおいて、標準的な酵母発酵条件(例えば、セルモサック(Thermosacc)酵母、pH5.0、38℃)で、2回行った。 酸で前処理されたバッガスを20mMのクエン酸ナトリム緩衝液(pH5.0)で7%のセルロース含量になるように調整した。酵母の栄養は1.0g/L酵母抽出物、1.0g/Lペプトン、及び1.0g/L尿素の最終濃度になるように添加した。全発酵ブロス又は精製発酵ブロスを(0.4CMC U/g酸前処理シュガーコーンバッガスの濃度)に添加して、同時に酵母を用いて発酵を行った。懸濁したときに、精製した発酵ブロスは、最終的に0.063pNPG/g酸処理バッガスと同様のベータブルコシダーゼ活性を有していた。このフラスコを150rpmで撹拌した。サンプルを異なる時間で採取し、エタノール、グリセロール、酢酸、酪酸、及び残りの糖類をHPLC法で解析した。
酸前処理バッガスの糖化を250mlスラスコで、2回行った。酸前処理バッガスは20mMクエン酸ナトリウム緩衝液(pH5.0)を用いて7%セルロースの付加になるように調整した。ベータグルコシダーゼを補充した、全発酵ブロス又は精製発酵ブロスを添加して酵素加水分解を開始した。同じ量のセルロース活性を用いた。即ち、それぞれ、0.4CMC U/g酸処理バッガス及び0.063pNPG/g酸処理バッガスを用いた。このフラスコを150rpmで撹拌した。サンプルを異なる時間間隔で採取し、グルコース、セロビオース、及びキシロースについて、HPLC方法で解析した。
Claims (14)
- 発酵及び糖化を同時に行って有機物質を生成する方法であって、
(a)補充される窒素源の不存在下で、セルロース系基質、全発酵ブロス、及び発酵微生物を組み合わせる工程、及び
(b)セルロース基質、全発酵ブロス、及び発酵微生物を、セルロースからグルコース及び/又はキシロースへの加水分解並びにグルコース及び/又はキシロースから有機物質への転換を行う条件下でインキュベートする工程を含む、方法。 - 前記セルロース系物質が、木材、木材パルプ、製紙スラッジ、製紙パルプの廃棄流れ、パーチクルボード、コーンストーバー、コーンファイバー、コーンコブ、ライス、製紙及びパルプ処理廃棄物、木又は草植物、フルーツパルプ、ベジタブルパルプ、パミス、醸造かす、草、籾殻、トウキビバッガス、綿、ジュート、ヘンプ、麻、バンブー、サイザル、アバカ、ストロー、コーンコブ、葉、小麦わら、ココナツ繊維、藻類、及びこれらの混合物からなる群より選択される1つ以上のセルロース源を含む、請求項1の方法。
- 前記セルロース系物質が機械的又は化学的に前処理されている、請求項1の方法。
- 前記全発酵ブロスが糸状菌の発酵から調製される、請求項1の方法。
- 前記発酵微生物が酵母又はバクテリア細胞である、請求項1の方法。
- 前記発酵微生物がエタノール生成微生物である、請求項1の方法。
- 前記有機物質がアルコールである、請求項1の方法。
- 前記有機物質がエタノールである、請求項1の方法。
- セルロース系物質、全発酵ブロス、及び発酵微生物の混合物を含む、有機基質を生成するための反応組成物であって、前記反応組成物には実質的に追加的な窒素源が含まれていないことを特徴とする、方法。
- 前記セルロース系物質が、木材、木材パルプ、製紙スラッジ、製紙パルプの廃棄流れ、パーチクルボード、コーンストーバー、コーンファイバー、ライス、製紙及びパルプ処理廃棄物、木又は草植物、フルーツパルプ、ベジタブルパルプ、パミス、醸造かす、草、籾殻、トウキビバッガス、綿、ジュート、ヘンプ、麻、バンブー、サイザル、アバカ、ストロー、コーンコブ、葉、小麦わら、ココナツ繊維、藻類、及びこれらの混合物からなる群より選択される1つ以上のセルロース源を含む、請求項9の反応組成物。
- 前記セルロース系物質が機械的又は化学的に前処理されている、請求項9の反応組成物。
- 前記全発酵ブロスが糸状菌全発酵ブロスである、請求項1の反応組成物。
- 前記発酵微生物が酵母又はバクテリア細胞である、請求項9の反応組成物。
- 前記発酵微生物がエタノール生成微生物である、請求項9の反応組成物。
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JP2015065834A (ja) * | 2013-09-27 | 2015-04-13 | 国立大学法人富山大学 | 製紙廃棄物からのエタノールの製造方法 |
JP2019154238A (ja) * | 2018-03-07 | 2019-09-19 | 国立研究開発法人森林研究・整備機構 | 樹木材料のリグノセルロースを原料としたアルコール飲料及びその製造方法 |
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CN101821397A (zh) | 2010-09-01 |
WO2009049067A1 (en) | 2009-04-16 |
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