JP2006526573A - ハヘラ・チェジュエンシス由来の殺藻効果を有する赤色色素 - Google Patents
ハヘラ・チェジュエンシス由来の殺藻効果を有する赤色色素 Download PDFInfo
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Abstract
本発明に係る赤色色素(RP10356)は、コクロヂニウム・ポリクリコイデス、ジャイロジニウム・インプジクム、ヘテロシグマ・アカシオなどの赤潮原因種に対して優れた殺潮効果を有していることから、赤潮生物を除去する殺藻製剤の有効成分として有用である。
Description
本実験に使われた菌株は、李ら(Systematic and evolutionary Microbiology.51:661−666,2001)が済州道海岸の堆積土から分離したハヘラ・チェジュエンシス(Hahella chejuensis gen.nov.,sp.nov.)96CJ10356菌株(KCTC 2396=IMSNU 11157)である。ここでは、前記菌株をSTN固体培地(表1)に接種してから25℃で48時間培養後、4℃で冷蔵保管しながら、2週間おきに新しい培地に植え継ぎ培養して使用した。
本実験に用いられた藻類を表3に示した。微細藻類は、釜慶大學(BKU:BuKung University) 養殖学科及び韓国海洋研究所(KORDI: Korea Ocean Reserch & Development Institute)赤潮研究チームから分譲された。その他、微細藻類は、赤潮発生地域で直接分離した。
実施例1で分離された粗色素及びRP10356を0,0.1,1.0,10,50及び100μg/mLの濃度にて1×103cells/mLの赤潮原因である微細藻類(コクロヂニウム・ポリクリコイデス、ジャイロジニウム・インプジクム、ヘテロシグマ・アカシオ、アレクランドリウム・カタネラ及びプロセントリウム・マイカンス)培養液に加えた。30分、1時間、2時間及び24時間経過後、それぞれの処理微細藻類を2%ルゴール液で固定し、倒立顕微鏡(Zeiss、Axon100、ドイツ)を用いて未溶解細胞数を計数した。初期接種細胞数から溶解細胞数を計数し、下記計算式1により殺藻効果を算出した。
毎年韓国に赤潮被害を起こし、粗色素による殺藻試験において最も優れた殺藻効果を示したコクロヂニウム・ポリクリコイデスに対して、前記の4つの分画の殺藻効果を調査した。前記4個分画の殺藻効果試験は、前記粗色素の殺藻効果試験と同様にして行った。粗色素の殺藻効果と比較した結果、4つの色素分画の中でRP10356のみが殺藻効果を有することがわかった。30分処理を基準として殺藻効果を比較した結果、1μL/Lの濃度の場合、粗色素は63.8%の殺藻効果を示す一方、RP10356は一層高い83.5%の殺藻効果を示した。特に、50%の殺藻能を示すRP10356の濃度は、30分処理では0.65μL/Lを示し、24時間処理では0.17μL/Lを示した(図5及び表5)。
粗色素及びRP10356処理による細胞形状の変化を倒立顕微鏡を用いて観察した。RP10356処理による細胞形状の変化は、成長阻害(growth inhibition)、細胞の膨潤(swelling of cell)、細胞の溶解(lysis of cell)、外被の脱離(ecdysis of armor)を基準として観察した。
ハヘラ・チェジュエンシス96CJ10356を用いて殺藻物質であるRP10356を大量生産するために、グルコース5重量%、0.1重量%のペプトン、0.42g/LのKH2PO4、0.34g/LのK2HPO4、0.5g/LのMgSO4、2.0g/LのCaCl2、0.001g/LのCoCl2・6H2O、0.001g/LのMnCl3、0.001g/LのZnSO4、0.001g/LのNaMoO4、蒸留水750mL及び寝かした海水を加えて最終容量3,000mLになるようにした後、前記96CJ10356菌株を接種し、その次、5L回分式培養器において培養を行った。このとき、培養温度は25℃にし、200rpmにおける通気量は1.5vvmにした。
(1)シリカ薄膜クロマトグラフィ(TLC:thin−layer chromatography)分析
2−プロパノール粗抽出物からRP10356を精製するために、前記粗抽出物1μgをエタノール1mLに溶解し、その後、シリカ60F254STLCプレート(メルク:Merck)に5μLを滴下し、石油エーテル:アセトン:メタノール(5:3:2)混合液で10cm展開した(図8)。その結果、Pf0.98(明るい黄色)、Rf0.96(濃い赤色)、Rf0.88(明るい赤色)及びRf0.59(青色)の4通りの色素が得られた。
RP10356の吸光型を調査するために、RP103561μg/mLのエタノール溶液を分光光度計(島津、UV−VIS2401PC、日本)を用いて300〜700nm波長の範囲で最大吸光波長を調査した(図9)。その結果、吸光光度計によるRP10356の最大吸光度は486nm及び539nmであって、主ピークは539nmであった。
培養液から2−プロパノールで抽出した色素の大量分離及び精製を行うために、展開溶媒としてアセトン:メタノール(9:1)を使用してシリカ・クロマトグラフィ(silica chlomatography:silica gel 60,0.040〜0.063mm、メルク、ドイツ)を行い粗色素を分離した(図10)。シリカ・クロマトグラフィにより粗色素を分離・精製した結果、4通りに分画された。この分画は、TLC結果と同様に明るい黄色、濃い赤色、明るい赤色及び青色の順になされ、これらのうち明るい赤色となるRP10356を分離した。
精製色素をHP1050システム(Hewlett Packard、米国)を用いて分析した。このとき、カラムとしてはシリカカラム(YMC−Pack SIL、250×4.6mm、日本)を用いて、アセトン:メタノール(9:1)溶媒を毎分当たり1.0mLずつ溶出し、DAD−UV(Hewlett Packard、米国)を用いて539nm、486nm、及び300〜800nmで、分析を行った(図11及び図12)。HPLCによる分析によれば、RP10356は、前記条件下で3.52分の保持時間(retention time)を有し、300〜800nmにおいても単一ピークが分離されることが確認できた。
Claims (15)
- 次の段階を含む殺藻効果を有する色素物質の製造方法:
(a)ハヘラ属微生物を培養する段階;及び
(b)前記培養液から有機溶媒を用いて殺藻効果を示す色素物質を分離・精製する段階。 - 前記ハヘラ属微生物はハヘラ・チェジュエンシスである請求項1に記載の殺藻効果を有する色素物質の製造方法。
- 前記ハヘラ・チェジュエンシスはハヘラ・チェジュエンシス96CJ10356菌株(KCTC 2396)である請求項2に記載の方法。
- 請求項1〜3のいずれか一項に記載の方法により製造され、シリカゲル薄膜クロマトグラフィ(TLC)により、Rf値0.98(石油エーテル:アセトン:メタノール=5:3:2)を示し、及び約539nmにおいて最大の吸光度を示すことを特徴とする、殺藻効果を有する赤色色素。
- 前記赤色色素がコクロヂニウム・ポリクリコイデス(Cochlodinium polykrikoides)、ジャイロジニウム・インプジクム(Gyrodinium impudicum)、またはヘテロシグマ・アカシオ(Heterosigma akashiwo)に対して殺藻効果を示す請求項4に記載の赤色色素。
- 前記赤色色素はRP10356である請求項4に記載の赤色色素。
- 請求項4に記載の赤色色素を有効成分として含む殺藻製剤。
- 前記赤色色素がコクロヂニウム・ポリクリコイデス(Cochlodinium polykrikoides)、ジャイロジニウム・インプジクム(Gyrodinium impudicum)、またはヘテロシグマ・アカシオ(Heterosigma akashiwo)に対して殺藻効果を示す請求項7に記載の殺藻製剤。
- ハヘラ属微生物培養液または前記培養液の有機溶媒抽出物を用いることを特徴とする赤潮生物の除去方法。
- 前記ハヘラ属微生物はハヘラ・チェジュエンシスである請求項9に記載の赤潮生物の除去方法。
- 前記ハヘラ・チェジュエンシスはハヘラ・チェジュエンシス96CJ10356菌株(KCTC 2396)である請求項9に記載の赤潮生物の除去方法。
- 前記有機溶媒は2−イソプロパノールである請求項9に記載の赤潮生物の除去方法。
- 前記赤潮はコクロヂニウム・ポリクリコイデス(Cochlodinium polykrikoides)、ジャイロジニウム・インプジクム(Gyrodinium impudicum)、またはヘテロシグマ・アカシオ(Heterosigma akashiwo)によるものである請求項9に記載の赤潮生物の除去方法。
- 請求項4の赤色色素を用いることを特徴とする赤潮生物の除去方法。
- 前記赤潮はコクロヂニウム・ポリクリコイデス(Cochlodinium polykrikoides)、ジャイロジニウム・インプジクム(Gyrodinium impudicum)、またはヘテロシグマ・アカシオ(Heterosigma akashiwo)によるものである請求項14に記載の赤潮生物の除去方法。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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KR10-2003-0029526A KR100495271B1 (ko) | 2003-05-09 | 2003-05-09 | 하헬라 제주엔시스 96cj10356 균주가 생산하는 적색색소의 살조효과 및 이로부터 적색색소를 생산하는 방법 |
PCT/KR2004/001072 WO2004099391A1 (en) | 2003-05-09 | 2004-05-10 | Red pigment originated from hahella chejuensis, having algalcidal effect |
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JP2006526573A true JP2006526573A (ja) | 2006-11-24 |
JP4469840B2 JP4469840B2 (ja) | 2010-06-02 |
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JP2006500691A Expired - Lifetime JP4469840B2 (ja) | 2003-05-09 | 2004-05-10 | ハヘラ・チェジュエンシス由来の殺藻効果を有する赤色色素 |
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KR100758997B1 (ko) * | 2005-11-30 | 2007-09-17 | 인하대학교 산학협력단 | 슈도모나스 속 미생물을 이용한 헤테로시그마 속편모조류를 억제하는 방법 |
KR100661175B1 (ko) * | 2005-12-20 | 2006-12-22 | 한국해양연구원 | 프로디지오신을 함유하는 살조제제 및 프로디지오신 생합성유전자 클러스터 |
KR100770204B1 (ko) | 2005-12-21 | 2007-10-26 | 한국해양연구원 | 하헬라 제주엔시스 변이주 m10356에 의해 생산된세포외다당류의 용도 |
KR100770205B1 (ko) | 2007-07-24 | 2007-10-26 | 한국해양연구원 | 하헬라 제주엔시스 변이주 m10356에 의해 생산된세포외다당류를 이용한 약물전달체 및 그 제조방법 |
CN104232524B (zh) * | 2014-08-29 | 2017-05-31 | 厦门大学 | 抑藻活性物质灵菌红素及其制备方法 |
KR102127466B1 (ko) | 2019-02-13 | 2020-06-29 | 충남대학교산학협력단 | 담수 녹조 방제용 살조 조성물 |
KR102135037B1 (ko) * | 2019-05-28 | 2020-07-20 | 한국생명공학연구원 | 피롤-2-카르복실산을 생산하고 살조 활성을 가지는 에리스로박터 속 3-20a1m 균주 및 이의 용도 |
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JP4469840B2 (ja) | 2010-06-02 |
CN1791667B (zh) | 2010-04-28 |
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KR100495271B1 (ko) | 2005-06-14 |
WO2004099391A1 (en) | 2004-11-18 |
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