JP6840419B2 - ハロモナス菌を用いたγーアミノ酪酸の製造方法。 - Google Patents
ハロモナス菌を用いたγーアミノ酪酸の製造方法。 Download PDFInfo
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- JP6840419B2 JP6840419B2 JP2016021792A JP2016021792A JP6840419B2 JP 6840419 B2 JP6840419 B2 JP 6840419B2 JP 2016021792 A JP2016021792 A JP 2016021792A JP 2016021792 A JP2016021792 A JP 2016021792A JP 6840419 B2 JP6840419 B2 JP 6840419B2
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- Prior art keywords
- halomonas
- culture
- aminobutyric acid
- medium
- acid
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Description
項1 以下の工程(1)および(2)を含むγーアミノ酪酸またはその塩の製造方法;
(1)ハロモナス属に属する好塩菌を、有機炭素源および無機塩を含有する液体培地中で培養する工程(1)、
(2)工程(1)によって得られる培養液中から、γーアミノ酪酸またはその塩を回収する工程(2)。
項2 前記工程(2)が、培養液を脱塩する工程を含む、上記項1に記載の製造方法。
項3 前記好塩菌が、ハロモナス・エスピー(Halomonas sp.)KM−1株(FERM BP−10995)である、上記項1または上記項2に記載の製造方法。
項4 γーアミノ酪酸またはその塩の製造用である、ハロモナス属に属する好塩菌。
項5 ハロモナス・エスピー(Halomonas sp.)KM−1株(FERM BP−10995)である、上記項4に記載の好塩菌。
項6 γーアミノ酪酸またはその塩の製造のための、ハロモナス属に属する好塩菌の使用。
項7 好塩菌がハロモナス・エスピー(Halomonas sp.)KM−1株(FERM BP−10995)である、上記項6に記載の使用。
(1)ハロモナス属に属する好塩菌を、有機炭素源および無機塩を含有する液体培地中で培養する工程(1)、
(2)工程(1)によって得られる培養液中から、γーアミノ酪酸またはその塩を回収する工程(2)。
<A:好塩菌>
工程1において用いる好塩菌はハロモナス属に属する好塩菌である。このようなハロモナス属に属する好塩菌は、酸化的代謝と嫌気的代謝とを使い分けることができ、培地中の遊離酸素の存在の有無にかかわらず生存が可能で、且つ、遊離酸素の存在下のほうが生育し易い傾向を示す、いわゆる、通性嫌気性菌の性質を有する菌体である。
7015として登録されている。
上記工程1において用いる培地は、無機塩とおよび有機炭素源を含有する液体培地である。このような培地のpHは特に限定されず、例えば、上記好塩菌の生育条件を満たすpHであることが好しく、具体的にはpH5〜12程度の範囲内であることができる。より好ましくはpH8〜10程度である。本発明では、コンタミネーションを防止するための特別な手段を取ることは必須ではないが、アルカリ性の培地を用いれば、ハロモナス属に属する好塩菌以外の混入をより効果的に防止することができる。
菌を好適に培養できるので、他の菌体の混入および増殖の恐れなどをほとんど排除できる。したがって、上述の培地に対して滅菌処理などを行わずに、簡便な設備で培養することも可能である。
上記工程1における上記ハロモナス属に属する好塩菌の培養方法は、特に限定はされない。具体的な培養方法の1態様を以下に示す。
本発明の製造方法の工程2は、上記工程1によって得られた培養液から、γーアミノ酪酸またはその塩を回収する工程である。「培養液」とは、(1)培養後の培地の液、または(2)これと増殖した菌体とを含む液である。
Claims (2)
- 以下の工程(1)および(2)を含むγーアミノ酪酸またはその塩の製造方法;
(1)ハロモナス・エスピー(Halomonas sp.)KM−1株(FERM BP−10995)を、有機炭素源および無機塩を含有する液体培地中で、35℃〜40℃にて培養する工程(1)、
(2)工程(1)によって得られる培養液中から、γーアミノ酪酸またはその塩を回収する工程(2)。 - 前記工程(2)が、培養液を脱塩する工程を含む、請求項1に記載の製造方法。
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