Process for producing L-tryptophan or derivatives thereof using microorganisms
AssigneeAsahi Kasei Kogyo Kabushiki Kaisha
InventorsAkio Mimura, Yasuyuki Takahashi, Katsumi Yuasa, Mitsuru Shibukawa
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Abstract
A process for producing L-tryptophan or a derivative thereof is disclosed, wherein an indole compound is reacted with serine, or with pyruvic acid and ammonium ion, in the presence of a culture or treated culture of a microorganism of genus Aeromonas or genus Klebsiella having the ability to produce L-tryptophan or a derivative thereof from an indole compound and serine, or from an indole compound, pyruvic acid and/or its salt, and ammonium ion.
Claims16
A process for producing L-tryptophan or a derivative thereof, wherein an indole compound is reacted with serine, or with pyruvic acid and/or its salt and ammonium ion, in the presence of a culture or treated culture of a microorganism of genus Aeromonas or genus Klebsiella having the ability to produce L-tryptophan or a derivative thereof from an indole compound and serine, or from an indole compound, pyruvic acid and/or its salt, and ammonium ion, said microorganism of genus Klebsiella being selected from the group consisting of Klebsiella SP. AST 148-1 having the FERM designation FERM-P 5541 and Klebsiella SP. AST 151-7 having the FERM designation FERM-P 5542.
A biologically pure culture of Aeromonas SP. AST 108-1 having the FERM designation FERM-P 5539, having the ability to produce L-tryptophan or a derivative thereof from an indole compound and serine, or from an indole compound, pyruvic acid and/or its salt, and ammonium ion by utilizing assimilable source of carbon, nitrogen and organic or inorganic substances that promote the growth of the culture.
A biologically pure culture of Aeromonas SP. AST 111-4 having the FERM designation FERM-P 5540, having the ability to produce L-tryptophan or a derivative thereof from an indole compound and serine, or from an indole compound, pyruvic acid and/or its salt, and ammonium ion, by utilizing assimilable sources of carbon, nitrogen, and organic or inorganic substances that promote the growth of the culture.
A biologically pure culture of Klebsiella SP. AST 148-1 having the FERM designation FERM-P 5541, having the ability to produce L-tryptophan or a derivative thereof from an indole compound and serine, or from an indole compound, pyruvic acid and/or its salt and ammonium ion, by utilizing assimilable source of carbon, nitrogen and organic or inorganic substances that promote the growth of the culture.
A biologically pure culture of Klebsiella SP. AST 151-7 having the FERM designation FERM-P 5542, having the ability to produce L-tryptophan or a derivative thereof from an indole compound and serine, or from an indole compound, pyruvic acid and/or its salt, and ammonium ion by utilizing assimilable source of carbon, nitrogen and organic or inorganic substances that promote the growth of the culture.
Dependencies are inferred from the claim text.