JPWO2016088274A1 - 高効率エタノール発酵菌 - Google Patents
高効率エタノール発酵菌 Download PDFInfo
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Abstract
Description
(グルコース濃度及びキシロース濃度は培養開始前の初期濃度である)
次に、26質量%の希硫酸処理コーンストーバ由来酵素糖化液を培地とし、該培地にMeyerozyma guilliermondi N株の培養液を培地のOD600が0.5となるように添加し、30℃の温度で100時間培養を行った。前記希硫酸処理コーンストーバ由来酵素糖化液は、グルコース64g/L、キシロース48g/Lを含みpH6であった。そして、前記培養後に前記培地を採取してエタノールの濃度をGC−FID(ジーエルサイエンス株式会社製、商品名:GC390B)により測定し、式(1)により発酵収率を算出した。結果を図3に示す。
ローストランスポーター活性のあるタンパク質を宿主としてSaccharomyces cerevisiaeに導入している。すなわち外来遺伝子を導入することになる。また、特許文献2の発明もトランスポーター遺伝子は異なるものの、宿主に対して異なる種の遺伝子を導入する発明である。
[0015]
また、非特許文献1に記載の技術は、キシロース資化遺伝子を導入するものであり、上記特許文献1及び2とは技術思想は異なるが、外来遺伝子を導入することに変わりない。
[0016]
そのため、上記特許文献1及び2、非特許文献1に記載の発明は、いずれも国連で採択された「生物の多様性に関する条約のバイオセーフティに関するカルタヘナ議定書」を実施するために我が国において施行されているいわゆるカルタヘナ法に則した封じ込め策を講じる必要がある。従って、バイオセーフティを保証するための施設を必要とすることから、当該菌体を利用してエタノールを生産することはコストの面で不利である。
[0017]
また、非特許文献2に記載の技術によって、ピキア属酵母を利用することは、野生型のピキア属酵母はキシロース利用性が低く、エタノール産生効率はさほど高くならない。
[0018]
本発明は、外来遺伝子を導入することなく、エタノール産生効率の高い高効率エタノール発酵菌を得ることを課題とする。
課題を解決するための手段
[0019]
前記課題を解決するために、本発明の高効率エタノール発酵菌は、五炭糖及び六炭糖から効率的にエタノールを産生する発酵菌であって、Meyerozyma guilliermondii N株を、アンモニア処理稲わら由来酵素糖化液に変異剤を加えた培地で馴化培養して、該培地で生育する菌を選抜することにより、Meyerozyma guilliermondii N株に比較してキシロース資化性及びエタノール発酵性能が向上している菌であり、特許微生物寄託センターに受託番号NITE BP−01962として寄託されていることを特徴とする。
[0020]
野生型Meyerozyma guilliermondiは、グルコース資化能に加えてキシロース資化能を備えているとはいうものの、バイオエタノール生産に十分なキシロース利用能を備えているわけではない。これに対して、本発明の高効率エタノール発酵菌(以下、BP−01962株ということがある。)は、Meyerozyma guilliermondi N株を親株として菌株育種することによりキシロース
Claims (2)
- 五炭糖及び六炭糖から効率的にエタノールを産生する発酵菌であって、
特許微生物寄託センターに受託番号NITE BP−01962として寄託されていることを特徴とする高効率エタノール発酵菌。 - 請求項1に記載の高効率エタノール発酵菌において、Meyerozyma guilliermondii N株を、アンモニア処理稲わら由来酵素糖化液に変異剤を加えた培地で馴化培養して、該培地で生育する菌を選抜することによりエタノール発酵性能が向上していることを特徴とする高効率エタノール発酵菌。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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PCT/JP2014/082331 WO2016088274A1 (ja) | 2014-12-05 | 2014-12-05 | 高効率エタノール発酵菌 |
Publications (2)
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JPWO2016088274A1 true JPWO2016088274A1 (ja) | 2017-05-25 |
JP6145582B2 JP6145582B2 (ja) | 2017-06-14 |
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JP2016562190A Active JP6145582B2 (ja) | 2014-12-05 | 2014-12-05 | 高効率エタノール発酵菌 |
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US (1) | US10119146B2 (ja) |
EP (1) | EP3228700B1 (ja) |
JP (1) | JP6145582B2 (ja) |
CN (1) | CN107429221B (ja) |
BR (1) | BR112017011495A2 (ja) |
WO (1) | WO2016088274A1 (ja) |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5828289A (ja) * | 1981-08-12 | 1983-02-19 | Kyowa Hakko Kogyo Co Ltd | 発酵法によるアルコ−ルの製造法 |
US7846712B2 (en) | 2006-06-01 | 2010-12-07 | Alliance For Sustainable Energy, Llc | L-arabinose fermenting yeast |
JP2011050359A (ja) | 2009-09-04 | 2011-03-17 | Musashino Chemical Laboratory Ltd | 新規微生物および該微生物由来の酵素、ならびにこれらを用いた糖化液の製造方法 |
HUE036686T2 (hu) * | 2010-04-14 | 2018-07-30 | Lesaffre & Cie | Legalább egy pentózból etanol képzésére alkalmas ipari élesztõ |
JP2012170422A (ja) | 2011-02-23 | 2012-09-10 | Kyoto Institute Of Technology | キシローストランスポーター活性を有する新規タンパク質および当該タンパク質をコードするポリヌクレオチド、並びにそれらの利用 |
JP2014158437A (ja) * | 2013-02-19 | 2014-09-04 | Nippon Shokubai Co Ltd | リグノセルロース系バイオマスの糖化液、及びその製造方法と使用方法 |
WO2016088275A1 (ja) * | 2014-12-05 | 2016-06-09 | 本田技研工業株式会社 | 高効率エタノール発酵菌 |
-
2014
- 2014-12-05 WO PCT/JP2014/082331 patent/WO2016088274A1/ja active Application Filing
- 2014-12-05 US US15/532,801 patent/US10119146B2/en not_active Expired - Fee Related
- 2014-12-05 BR BR112017011495A patent/BR112017011495A2/pt not_active Application Discontinuation
- 2014-12-05 EP EP14907557.4A patent/EP3228700B1/en active Active
- 2014-12-05 JP JP2016562190A patent/JP6145582B2/ja active Active
- 2014-12-05 CN CN201480083830.3A patent/CN107429221B/zh not_active Expired - Fee Related
Non-Patent Citations (2)
Title |
---|
FAN, CHAO ET AL.: "Efficient ethanol production from corncob residues by repeated fermentation of an adapted yeast", BIORESOURCE TECHNOLOGY, vol. Vol.136, JPN6015009221, 2013, pages 309 - 315, XP028591017, DOI: doi:10.1016/j.biortech.2013.03.028 * |
HAN, LI-LI ET AL.: "Breeding of Higher Ethanol Fermentation of Xylose Strain with Protoplast Fusion and Mutagenisis", LIQUOR MAKING, vol. 35, no. 2, JPN6015009241, 2008, pages 38 - 41, XP008185458 * |
Also Published As
Publication number | Publication date |
---|---|
EP3228700B1 (en) | 2019-07-31 |
JP6145582B2 (ja) | 2017-06-14 |
BR112017011495A2 (pt) | 2018-04-10 |
WO2016088274A1 (ja) | 2016-06-09 |
US10119146B2 (en) | 2018-11-06 |
CN107429221A (zh) | 2017-12-01 |
US20170342425A1 (en) | 2017-11-30 |
EP3228700A4 (en) | 2018-05-23 |
CN107429221B (zh) | 2020-08-18 |
EP3228700A1 (en) | 2017-10-11 |
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