JP6235210B2 - 微細藻類の培養方法 - Google Patents
微細藻類の培養方法 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
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- C12M23/00—Constructional details, e.g. recesses, hinges
- C12M23/02—Form or structure of the vessel
- C12M23/18—Open ponds; Greenhouse type or underground installations
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- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/30—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration
- C12M41/34—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration of gas
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- C12M41/00—Means for regulation, monitoring, measurement or control, e.g. flow regulation
- C12M41/30—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration
- C12M41/36—Means for regulation, monitoring, measurement or control, e.g. flow regulation of concentration of biomass, e.g. colony counters or by turbidity measurements
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- C12N1/00—Microorganisms; Compositions thereof; Processes of propagating, maintaining or preserving microorganisms or compositions thereof; Processes of preparing or isolating a composition containing a microorganism; Culture media therefor
- C12N1/12—Unicellular algae; Culture media therefor
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- 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
- C12P7/64—Fats; Fatty oils; Ester-type waxes; Higher fatty acids, i.e. having at least seven carbon atoms in an unbroken chain bound to a carboxyl group; Oxidised oils or fats
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Description
(実施例1)
屋外の開放系培養システム(500L)に、以下の組成を有する培養液を収容した。
アンモニア態窒素(尿素):9.8g
リン:560mg
カリウム:560mg
カルシウム:150mg
マグネシウム:170mg
キレート金属塩:85mg
培養液のpHは微細藻類の植株前に塩酸を用いて3.5に調整し、その後は調整しなかった。この培養液に、Pseudococcomyxa属近縁の微細藻類であるPseudochoricystis ellipsoidea N1株(MBIC11204)を、0.02g/lとなるように植株した。
培養中、培養液における藻体濃度とpHとを継続的に測定した。その測定結果を図1に示す。図1において「OD720」は培養液中の藻体濃度を示し、「pH」は培養液のpHを示す。また、培養終了後における藻体中の窒素濃度及び油脂含量を測定した。その結果を表1に示す。
(実施例2)
微細藻類として、Pseudococcomyxa属近縁の微細藻類であるPseudochoricystis ellipsoidea N1株(MBIC11204)の代わりに、同じPseudococcomyxa属近縁の微細藻類であるPseudochoricystis ellipsoidea Obi株(MBIC11220)を用いて、前記実施例1と同様に培養を行った。
(実施例3)
微細藻類として、Pseudochoricystis ellipsoidea N1株(MBIC11204)の代わりに、Coccomyxa simplex (UTEX274)を用いる点以外は前記実施例1と同様にして微細藻類の培養を行った。
(実施例4)
微細藻類として、Pseudochoricystis ellipsoidea N1株(MBIC11204)の代わりに、Coccomyxa chodatii (UTEXB266)を用いる点以外は前記実施例1と同様にして微細藻類の培養を行った。
(実施例5)
屋外の開放系培養システム(500L)に、以下の組成を有する培養液を収容した。
硝酸体態窒素(硝酸ナトリウム):27.3g
リン:560mg
カリウム:560mg
カルシウム:150mg
マグネシウム:170g
キレート金属塩:85mg
培養液のpHは微細藻類の植株前に塩酸を用いて3に調整し、その後は調整しなかった。この培養液に、Watanabeaクレードに帰属する単細胞緑藻類を、0.02g/lとなるように植株した。この微細藻類は、温泉湧出環境等において採取したサンプルから、pHが3であり、温度が15〜35℃の範囲内にある条件にてスクリーニングされた微細藻類である。この微細藻類がWatanabeaクレードに帰属する単細胞緑藻類であることはDNAの相同性により確認した。この微細藻類のDNA配列を、配列表の配列番号4〜6に示す。
(実施例6)
まず、前記実施例1と同じ微細藻類を用い、前記実施例1と同様に培養を行った。これを1回目の培養とする。その後、1回目の培養後の培養液から、微細藻類を回収し、回収後の培養液(微細藻類を実質的に含まない培養液)において、新たな微細藻類(前記実施例1と同じ微細藻類)を、前記実施例1と同様の方法で培養した。これを2回目の培養とする。培養液の培地組成に関しては、前記実施例1と同量添加した。
(実施例7)
温泉より採取したいろいろな微生物が混ざったものを用いて、実施例5と同様な方法で培養すると、Coccomyxa属およびその近縁生物群、Pseudococcomyxa属、又はWatanabeaクレードに帰属する単細胞緑藻類の微細藻類のみに増殖が見られた。Coccomyxa属およびその近縁生物群、Pseudococcomyxa属の微細藻類のDNA配列を、配列表の配列番号1〜3に示す。Watanabeaクレードに帰属する単細胞緑藻類の微細藻類のDNA配列を、配列表の配列番号4〜6に示す。
(実施例8)
温泉より採取したいろいろな微生物が混ざったものを用いて、実施例1と同様な方法で培養すると、Coccomyxa属およびその近縁生物群、Pseudococcomyxa属の微細藻類のみに増殖が見られた。Coccomyxa属およびその近縁生物群、Pseudococcomyxa属の微細藻類のDNA配列を、配列表の配列番号1〜3に示す。
(実施例9)
図3に、培養システム1の構成を表す。培養システム1は、レースウェイ型の培養槽3と、培養槽3中の培養液を攪拌する攪拌用パドル5と、培養液のpHを検知するpH測定センサ7と、培養液中のCO2濃度を検知するCO2濃度測定センサ9と、周知のコンピュータから成る制御部11と、培養液へのpH調整剤の投入を行うpH調整剤投入部13と、培養液へのCO2含有ガスの導入を行うCO2ガス導入部15と、を備える。
例えば、前記実施例1〜4、6、8において、尿素の代わりに、他のアンモニア態窒素を用いても略同様の効果を奏することができる。
7・・・pH測定センサ、9・・・CO2濃度測定センサ、11・・・制御部、
13・・・pH調整剤投入部、15・・・CO2ガス導入部
Claims (2)
- pHが4以下であり、アンモニア態窒素を含む培養液を用いて、コッコミクサ属およびその近縁生物群、又はシュードココミクサ属の微細藻類を屋外の開放系培養システムにおいて培養することを特徴とする微細藻類の培養方法。
- 前記微細藻類の培養に用いた前記培養液から前記微細藻類を回収し、回収後の前記培養液を用いて新たな前記微細藻類を屋外の開放系培養システムにおいて培養することを特徴とする請求項1記載の微細藻類の培養方法。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012273633A JP6235210B2 (ja) | 2012-12-14 | 2012-12-14 | 微細藻類の培養方法 |
| AU2013358448A AU2013358448B2 (en) | 2012-12-14 | 2013-12-04 | Culture method and culture system for microalgae |
| PCT/JP2013/007118 WO2014091718A1 (ja) | 2012-12-14 | 2013-12-04 | 微細藻類の培養方法及び培養システム |
| US14/651,164 US9790461B2 (en) | 2012-12-14 | 2013-12-04 | Culture method and culture system for microalgae |
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| JP2012273633A JP6235210B2 (ja) | 2012-12-14 | 2012-12-14 | 微細藻類の培養方法 |
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| Publication Number | Publication Date |
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| JP2014117202A JP2014117202A (ja) | 2014-06-30 |
| JP6235210B2 true JP6235210B2 (ja) | 2017-11-22 |
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| JP2012273633A Active JP6235210B2 (ja) | 2012-12-14 | 2012-12-14 | 微細藻類の培養方法 |
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|---|---|
| US (1) | US9790461B2 (ja) |
| JP (1) | JP6235210B2 (ja) |
| AU (1) | AU2013358448B2 (ja) |
| WO (1) | WO2014091718A1 (ja) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6446774B2 (ja) | 2013-11-19 | 2019-01-09 | 株式会社デンソー | 緑藻の脂質蓄積変異体およびその利用 |
| JP6613731B2 (ja) | 2015-09-02 | 2019-12-04 | 株式会社デンソー | トリグリセリド生産性が改良された真核微細藻類遺伝子改変株及びその利用 |
| JP6589605B2 (ja) | 2015-12-01 | 2019-10-16 | 株式会社デンソー | 強光に耐性を示す緑藻突然変異体及びその利用 |
| JP6897370B2 (ja) * | 2017-06-30 | 2021-06-30 | 株式会社デンソー | 低pHのKJ株培養水の処理方法 |
| JP6911582B2 (ja) * | 2017-06-30 | 2021-07-28 | 栗田工業株式会社 | 低pH微細藻類培養水の処理方法 |
| US11780756B2 (en) | 2018-10-16 | 2023-10-10 | Nutech Ventures | Integrated unicellular/filamentous algal production, harvesting and remediation system |
| CN111115827B (zh) * | 2018-10-30 | 2022-06-28 | 中国石油化工股份有限公司 | 利用微藻脱除分子筛废水中氨氮的方法 |
| AU2023412833A1 (en) | 2022-12-19 | 2025-07-03 | Hutanbio Ltd. | Lipid producing marine microalga |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP3336439B2 (ja) | 1991-10-31 | 2002-10-21 | 財団法人電力中央研究所 | 高濃度co2 を固定するクロレラ属の微細藻 |
| JPH05284962A (ja) | 1992-04-08 | 1993-11-02 | Tohoku Electric Power Co Inc | 微細藻類の培養方法 |
| JP3459275B2 (ja) | 1993-03-02 | 2003-10-20 | 財団法人地球環境産業技術研究機構 | 新規微細藻類株及びそれを用いて二酸化炭素を固定する方法 |
| JPH0759557A (ja) | 1993-08-26 | 1995-03-07 | Kaiyo Bio Technol Kenkyusho:Kk | 新規微細藻類 |
| JP2798882B2 (ja) | 1994-02-24 | 1998-09-17 | 株式会社バイオポリマー・リサーチ | 繊維−バクテリアセルロース複合体の製造方法及び該方法によって得られ得る複合体 |
| JP3035153B2 (ja) | 1994-04-27 | 2000-04-17 | 石川島播磨重工業株式会社 | 光合成生物の培養方法 |
| JPH0856648A (ja) | 1994-08-22 | 1996-03-05 | Tokyo Electric Power Co Inc:The | 新規微細藻類株及びそれを用いてco2を固定する方法 |
| JPH09227602A (ja) | 1996-02-21 | 1997-09-02 | Kaiyo Bio Technol Kenkyusho:Kk | 新規微細藻類およびそれを用いた粘性物質生産方法並びに新規粘性物質 |
| JP3181237B2 (ja) | 1997-03-17 | 2001-07-03 | 財団法人地球環境産業技術研究機構 | 微細藻クロレラ及び微細藻クロレラを用いたco2固定化法 |
| WO2006109588A1 (ja) * | 2005-04-12 | 2006-10-19 | Denso Corporation | 新規微細藻類及び炭化水素の生産方法 |
| WO2010006228A2 (en) * | 2008-07-11 | 2010-01-14 | Eudes De Crecy | A method of producing fatty acids for biofuel, biodiesel, and other valuable chemicals |
| US20110020914A1 (en) * | 2009-07-24 | 2011-01-27 | Novus International Inc | Methods for enhancing growth of organisms in an aqueous growth medium |
| US9260685B2 (en) * | 2010-02-15 | 2016-02-16 | Univerve Ltd. | System and plant for cultivation of aquatic organisms |
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- 2012-12-14 JP JP2012273633A patent/JP6235210B2/ja active Active
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- 2013-12-04 US US14/651,164 patent/US9790461B2/en active Active
- 2013-12-04 AU AU2013358448A patent/AU2013358448B2/en active Active
- 2013-12-04 WO PCT/JP2013/007118 patent/WO2014091718A1/ja not_active Ceased
Also Published As
| Publication number | Publication date |
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| AU2013358448B2 (en) | 2017-10-19 |
| US9790461B2 (en) | 2017-10-17 |
| AU2013358448A2 (en) | 2015-07-16 |
| WO2014091718A1 (ja) | 2014-06-19 |
| JP2014117202A (ja) | 2014-06-30 |
| AU2013358448A1 (en) | 2015-07-02 |
| US20150337255A1 (en) | 2015-11-26 |
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