JP2018529343A - 単細胞紅藻類を培養するための新規な方法 - Google Patents
単細胞紅藻類を培養するための新規な方法 Download PDFInfo
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Abstract
Description
− フラッシュの回数が1時間あたり約2〜3.6×104(5.4×10−4Hz〜10Hz)、優先的には1時間あたり3〜3.6×103(8.3×10−4Hz〜1Hz)であってもよい、低頻度の照射。ここで、1時間あたりのフラッシュ回数は、2〜36000の全ての値(全てを述べる必要はないが、2、3、4、・・・、35598、35599、36000)を含んでいてもよいと理解される。
− フラッシュの回数が、1時間あたり約3.6×104〜5.4×109(10Hz〜1.5×106Hz)、優先的には3.6×105〜5.4×109(100Hz〜1.5×106Hz)であってもよい、高頻度の照射。ここで、1時間あたりのフラッシュ回数は、3.6×105〜5.4×109の全ての値(全てを述べる必要はないが、36000、36001、36002、・・・、5399999998、5399999999、5400000000)を含んでいてもよいと理解される。
(a)上および以下に定義される、400〜550nmの狭い波長スペクトルを有する放射線の形態での少なくとも1つの照射工程を用いて、少なくとも1つの炭素源を含む培地中で、イデユコゴメ(Cyanidiophyceae)綱のURAを培養し、前記培地中に前記URAを少なくとも20g/乾燥重量(L)の細胞密度で含んでなる発酵マストを得る工程と、
(b)この発酵マストから得られるバイオマスを回収する工程と、
(c)このバイオマスからフィコシアニンを回収する工程と
を少なくとも含むことを特徴とする方法に関する。
材料および方法
株:Galdieria sulphuraria(Cyanidium caldariumとも呼ばれる) UTEX番号2919
従属栄養および混合栄養:30g/Lのグリセロール、8g/Lの(NH4)2SO4、1g/LのKH2PO4、716mg/LのMgSO4、44mg/LのCaCl2、3mL/LのFe−EDTAストック溶液(6.9g/LのFeSO4および9.3g/LのEDTA−Na2)および4mL/Lの微量金属溶液(3.09g/LのEDTA−Na2;0.080g/LのCuSO4・5H2O;2.860g/LのH3BO3;0.040g/LのNaVO3・4H2O;1.820g/LのMnCl2;0.040g/LのCoCl2・6H2O;0.220g/LのZnSO4・7H2O;0.017g/LのNa2SeO3;0.030g/Lの(NH4)6Mo7O24・4H2O)。
培養は、コンピュータ制御された自動化システムを備える、有効体積が1L〜2Lのリアクターで行う。培養物のpHは、塩基(14%アンモニア溶液(wNH3/w))および/または酸(4N硫酸溶液)を添加することによって制御する。培養温度は、42℃に設定する。撹拌は、3つのインペラ:スパージャーの上側にある撹拌軸の下端に配置された6個のまっすぐなブレードを有する1つのRushtonタービン、および撹拌軸上に配置された2つのトリプルブレード型HTPG2インペラによって行う。液相の溶存酸素圧は、培養中常に、撹拌軸の回転速度(250〜1800rpm)および空気および/または酸素の通気流速によって、培地中で制御される。温度、圧力および培地組成を一定とする条件下で、コンピュータ制御された自動化システムに組み込まれた制御パラメータによって、液相中の溶存酸素の分圧を空気飽和値の5〜30%に維持することができる。培養時間は、50〜300時間であった。
− 従属栄養(−◆−):グリセロール基質を流加モードで与える。光は与えない。
− 混合栄養(−○−):グリセロール基質を流加モードで与え、光を与える。
材料および方法
株:Galdieria sulphuraria(またはCyanidium caldarium) UTEX番号2919
30g/Lのグリセロール、8g/Lの(NH4)2SO4、1g/LのKH2PO4、716mg/LのMgSO4、44mg/LのCaCl2、3mL/LのFe−EDTAストック溶液(6.9g/LのFeSO4および9.3g/LのEDTA−Na2)および4mL/Lの微量金属溶液(3.09g/LのEDTA−Na2;0.080g/LのCuSO4・5H2O;2.860g/LのH3BO3;0.040g/LのNaVO3・4H2O;1.820g/LのMnCl2;0.040g/LのCoCl2・6H2O;0.220g/LのZnSO4・7H2O;0.017g/LのNa2SeO3;0.030g/Lの(NH4)6Mo7O24・4H2O)。
各100mLエレンマイヤーフラスコ中で、培地を240時間前培養し、インキュベートする(0.1%、v/v)。光とリン濃度を組み合わせた効果を調べるために、各エレンマイヤーフラスコを、白色LEDまたは青色LED(455nm)システムで照射する。各条件の光強度は、100μmolm−2s−1である。緩やかに撹拌しながら(200rpm)、温度42℃で、細胞を培養する。800nmでの吸光度を測定することによって、細胞成長の追跡を24時間ごとに行う。静止期に達したら(約190時間)、細胞懸濁物50mLを採取し、濾過によって乾燥重量の測定を行い、Reflectoquant(登録商標)によって培地中のリン濃度の測定(当業者に既知の方法)を行う。
この試験により、180時間ですでに、青色光におけるフィコシアニン濃度が白色光におけるフィコシアニン濃度よりも300%大きいことが示される(図2A)。この差異は、250時間では、有意ではあるが、せいぜい25%である。
材料および方法
株:Galdieria sulphuraria(Cyanidium caldariumとも呼ばれる) UTEX番号2919
リン濃度の影響を調べるために、4種類の異なる培地で培養を追跡した。これらの培地は同じ基剤で構成される:
30g/Lのグリセロール、8g/Lの(NH4)2SO4、716mg/LのMgSO4、44mg/LのCaCl2、3mL/LのFe−EDTAストック溶液(6.9g/LのFeSO4および9.3g/LのEDTA−Na2)および4mL/Lの微量金属溶液(3.09g/LのEDTA−Na2;0.080g/LのCuSO4・5H2O;2.860g/LのH3BO3;0.040g/LのNaVO3・4H2O;1.820g/LのMnCl2;0.040g/LのCoCl2・6H2O;0.220g/LのZnSO4・7H2O;0.017g/LのNa2SeO3;0.030g/Lの(NH4)6Mo7O24・4H2O)。
各100mLエレンマイヤーフラスコ中で、培地を240時間前培養し、インキュベートする(0.1%)。蛍光灯(Osram 865 Cool Daylight)によって100μmolm−2s−1で一定照射しつつ、緩やかに撹拌しながら(140rpm)、温度42℃で、細胞を培養する。800nmでの吸光度を測定することによって、細胞成長の追跡を24時間ごとに行う。
図3に、これらの試験の結果を示す。
(A)初期培地における、種々の濃度の(NH4)2SO4存在下での株の成長。
(B)培養終了時における、バイオマス中の細胞内フィコシアニン含有量の概算。
(C)初期培地における、種々の濃度のKH2PO4存在下での株の成長。
(D)180時間および250時間での、バイオマス中のPC量の概算。
材料および方法
株:Galdieria sulphuraria(またはCyanidium caldarium) UTEX番号2919
30g/Lのグリセロール、8g/Lの(NH4)2SO4、716mg/LのMgSO4、44mg/LのCaCl2、3mL/LのFe−EDTAストック溶液(6.9g/LのFeSO4および9.3g/LのEDTA−Na2)および4mL/Lの微量金属溶液(3.09g/LのEDTA−Na2;0.080g/LのCuSO4・5H2O;2.860g/LのH3BO3;0.040g/LのNaVO3・4H2O;1.820g/LのMnCl2;0.040g/LのCoCl2・6H2O;0.220g/LのZnSO4・7H2O;0.017g/LのNa2SeO3;0.030g/Lの(NH4)6Mo7O24・4H2O)。
図4に、これらの試験の結果を示す。
培養条件:
500mgのKH2PO4および波長455nmで3ワットの光パワーを伝達する青色バッフルを用い、Galdieria UTEX 2919株を実施例1の条件で培養した。フィード培地は、マスト1リットルあたり60〜65gの乾燥重量を得るような割合である。培地の各成分の濃度は、実施例1に記載する培養開始時に使用される培地の割合に準じて調整される。
3週間後、マスト1リットルあたりのDEが定常的に60〜65gである培養法を確立した(図5A)。600時間で光パワーを上げると、その結果、バイオマス中のPC含有量は40mg/DW(g)に達するまで徐々に増加する。最後の200時間の培養中に測定されたPC含有量は、平均して、上記値に近い値に維持される。
試験プロトコル
Galdieria UTEX 2919株を実施例2の条件で培養した。
これらの試験の結果を図6に示す。
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FR 2 789 399
WO2012/035262
Claims (17)
- 少なくとも1つの炭素源を含む培地中でイデユコゴメ綱の単細胞紅藻類(URA)を培養するための方法であって、当該方法が、400〜550nmの狭い波長スペクトルを有する放射線の形態での少なくとも1つの照射工程を含んでなることを特徴とする、方法。
- 前記URAが、イデユコゴメ(Cyanidiales)目のURAであり、より有利には、イデユコゴメ(Cyanidiaceae)科またはガルディエリア(Galdieriaceae)科のURAであり、具体的には、シアニディオシゾン(Cyanidioschyzon)属、シアニジウム(Cyanidium)属、またはガルディエリア(Galdieria)属のURAであり、より具体的には、Cyanidioschyzon merolae 10D種、Cyanidioschyzon merolae DBV201種、Cyanidium caldarium種、Cyanidium daedalum種、Cyanidium maximum種、Cyanidium partitum種、Cyanidium rumpens種、Galdieria daedala種、Galdieria maxima種、Galdieria partita種、またはGaldieria sulphuraria種のURAであり、優先的には、Galdieria sulphuraria種のURAである、請求項1に記載の方法。
- 前記照射が、420nm〜500nm、有利には430〜480nm、より優先的には455nmの狭い波長スペクトルを有する放射線の形態である、請求項1または2に記載の方法。
- 前記炭素源が、グルコース、スクロース、アセテートまたはグリセロールから選択されるものである、請求項1〜3のいずれか一項に記載の方法。
- 前記炭素源が、初期培地中、5mM〜1.5M、好ましくは50mM〜800mMの濃度である、請求項1〜4のいずれか一項に記載の方法。
- 回分培養の場合、初期培地中の炭素濃度およびリン濃度が、または流加培養または連続培養の場合、培養中に消費される炭素およびリンの量が、リンのモル数/炭素のモル数で表される前記濃度のP/C比が0.01898より小さく、有利には0.01503より小さく、より有利には0.01054より小さく、さらにより有利には0.00527より小さく、優先的には0.00263より小さく、より優先的には0.00131より小さくなるような量であってもよい、請求項1〜5のいずれか一項に記載の方法。
- 請求項1〜6のいずれか一項に記載の方法によって得られるバイオマスであって、URAの密度が、20〜200g/乾燥重量(L)、優先的には90〜150g/乾燥重量(L)である、バイオマス。
- フィコビリタンパク質(フィコシアニンおよびアロフィコシアニン)の含有量が、29〜250mg/乾燥重量(g)、優先的には35〜150mg/乾燥重量(g)である、請求項6または7に記載のバイオマス。
- フィコシアニンの含有量が、29〜200mg/乾燥重量(g)、優先的には40〜100mg/乾燥重量(g)である、請求項6〜8のいずれか一項に記載のバイオマス。
- pHが8〜2、優先的には7〜3、より優先的には4〜5の溶液中で着色がほとんど消えないか、あるいは全く消えない青色を有し、および/または、50℃を超える温度で着色がほとんど消えないか、あるいは全く消えない青色を有し、および/または、エタノール中で着色がほとんど消えないか、あるいは全く消えない青色を有するフィコシアニンを含んでなる、請求項6〜9のいずれか一項に記載のバイオマス。
- フィコシアニンを調製するための方法であって、当該方法が以下の工程:
(a)請求項1〜6のいずれか一項に記載の、400〜550nmの狭い波長スペクトルを有する放射線の形態での少なくとも1つの照射工程を用いて、少なくとも1つの炭素源を含む培地中でイデユコゴメ綱のURAを培養し、前記培地中に前記URAを少なくとも20g/乾燥重量(L)の細胞密度で含んでなる発酵マストを得る工程と、
(b)前記発酵マストから得られるバイオマスを回収する工程と、
(c)前記バイオマスからフィコシアニンを回収する工程と
を少なくとも含んでなることを特徴とする方法。 - 食品または動物の餌、化粧品の用途における、請求項6〜10のいずれか一項に記載のバイオマスの使用。
- フィコシアニンおよび/またはカロテノイドを調製するための、請求項6〜10のいずれか一項に記載のバイオマスの使用。
- 請求項7〜12のいずれか一項に記載のバイオマスを少なくとも含んでなる製品。
- 請求項6〜10のいずれか一項に記載のバイオマスから得られるか、または請求項11に記載の方法によって得られるフィコシアニン。
- 食品における、および/または色素としての、請求項15に記載のフィコシアニンの使用。
- 請求項15に記載のフィコシアニンを少なくとも含んでなる製品。
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CN113229430A (zh) * | 2021-05-24 | 2021-08-10 | 中国科学院海洋研究所 | 一种富锶海藻蛋白保健功能饮品及其制备方法 |
JP2024532408A (ja) | 2021-08-24 | 2024-09-05 | ザ ウィリアムソン グループ リミテッド ライアビリティ カンパニー | 酸性組成物におけるフィコシアニンの改善された安定化 |
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JP2022519630A (ja) * | 2019-02-08 | 2022-03-24 | フェルメンタル | 単細胞紅藻の産業的利用のための最適化された方法 |
JP7550773B2 (ja) | 2019-02-08 | 2024-09-13 | フェルメンタル | 単細胞紅藻の産業的利用のための最適化された方法 |
JPWO2022045110A1 (ja) * | 2020-08-24 | 2022-03-03 | ||
WO2022045110A1 (ja) * | 2020-08-24 | 2022-03-03 | Dic株式会社 | 1倍体単細胞性紅藻の製造方法、及び1倍体単細胞性紅藻用培地 |
WO2022045109A1 (ja) * | 2020-08-24 | 2022-03-03 | Dic株式会社 | 崩壊性単細胞性紅藻の製造方法、及び崩壊性単細胞性紅藻用培地 |
JPWO2022045109A1 (ja) * | 2020-08-24 | 2022-03-03 | ||
JP7233667B2 (ja) | 2020-08-24 | 2023-03-07 | Dic株式会社 | 崩壊性単細胞性紅藻の製造方法、及び崩壊性単細胞性紅藻用培地 |
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US20180274002A1 (en) | 2018-09-27 |
JP6976933B2 (ja) | 2021-12-08 |
WO2017050917A1 (fr) | 2017-03-30 |
EP3353283A1 (fr) | 2018-08-01 |
JP2021176341A (ja) | 2021-11-11 |
JP7469269B2 (ja) | 2024-04-16 |
FR3041505B1 (fr) | 2021-06-11 |
CN108431202A (zh) | 2018-08-21 |
JP2018527940A (ja) | 2018-09-27 |
FR3041653A1 (fr) | 2017-03-31 |
CN108431202B (zh) | 2023-02-17 |
JP2024010035A (ja) | 2024-01-23 |
US11162126B2 (en) | 2021-11-02 |
BR112018005928A2 (pt) | 2018-12-11 |
FR3041653B1 (fr) | 2017-12-29 |
RU2018112989A (ru) | 2019-10-25 |
RU2739847C2 (ru) | 2020-12-29 |
CA2998973A1 (fr) | 2017-03-30 |
US20180271119A1 (en) | 2018-09-27 |
FR3041505A1 (fr) | 2017-03-31 |
WO2017050918A1 (fr) | 2017-03-30 |
MX2018003696A (es) | 2018-04-30 |
CN116349890A (zh) | 2023-06-30 |
EP3353282A1 (fr) | 2018-08-01 |
RU2018112989A3 (ja) | 2020-01-31 |
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