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    • 9. 发明公开
    • PROCESS FOR PRODUCING D-ALANINE
    • VERFAHREN ZUR HERSTELLUNG VON D-ALANIN
    • EP1435392A1
    • 2004-07-07
    • EP02765541.4
    • 2002-09-13
    • Musashino Chemical Laborarory Ltd.
    • UEDA, Hiroyuki
    • C12P41/00C12R1/685C12R1/67C12R1/66C12R1/785
    • C12P41/001C12P13/06
    • This invention is characterized by having filamentous fungi act on a DL-alanine containing solution and assimilate L-alanine without by-producing pyruvic acid. The D-alanine can be produced efficiently because the filamentous fungi can be conveniently and easily separated from the fermentation broth and the fermentation broth contains no pyruvic acid. For the purpose of isolating the D-alanine from the separating solution, it suffices to treat the separating solution by the use of an ion exchange resin. The filamentous fungi effectively usable herein belong to at least one member selected from the class consisting of genus Aspergillus, genus Penicillium, genus Mucor, genus Rhizopus, genus Circinella, genus Cladosporium, genus Trichoderma, genus Eurotium, genus Chaetomium, genus Aureobasidium, genus Geotrichum, and genus Paecilomyces which are commercially available.
    • 本发明的特征在于具有丝状真菌作用于含有DL-丙氨酸的溶液并吸收L-丙氨酸而不产生丙酮酸。 可以有效地生产D-丙氨酸,因为丝状真菌可以方便地容易地从发酵液中分离出来,发酵液不含丙酮酸。 为了从分离溶液中分离出D-丙氨酸,可以使用离子交换树脂处理分离溶液。 本文中有效使用的丝状真菌属于选自曲霉属,青霉属,毛霉属,根霉属,根际属,枝孢霉属,木霉属,金龟子属,毛壳菌属,金银菌属,地热属 ,以及可商购的拟青霉属。