Growth stimulating activity for microorganisms in naturally occurring substances and partial characterization of the substance for the activity as pyrroloquinoline quinone.

DOI DOI Web Site 被引用文献6件 オープンアクセス
  • AMEYAMA Minoru
    Laboratory of Applied Microbiology, Department of Agricultural Chemistry, Faculty of Agriculture, Yamaguchi University
  • SHINAGAWA Emiko
    Laboratory of Applied Microbiology, Department of Agricultural Chemistry, Faculty of Agriculture, Yamaguchi University
  • MATSUSHITA Kazunobu
    Laboratory of Applied Microbiology, Department of Agricultural Chemistry, Faculty of Agriculture, Yamaguchi University
  • ADACHI Osao
    Laboratory of Applied Microbiology, Department of Agricultural Chemistry, Faculty of Agriculture, Yamaguchi University

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In various naturally occurring substances used for culture media, the universal occurrence of a growth stimulating substance for microorganisms was indicated, which markedly reduced the lag phase in microbial growth, whereas no appreciable increase was observed in the subsequent growth rate at the exponential phase or in the final cell yield at the stationary phase. An extensive survey of the naturally occurring substances by means of chromatographic fractionation showed that the growth stimulating activity appeared in a restricted area of the gel filtration profiles, indicating the molecular similarity of these naturally occurring substances. The biological activity was specific not only for acetic acid bacteria but also for many other kinds of microbes. The possibility that the substances were identical with PQQ was indicated by several lines of analytical evidence. One reason for the faster cell growth on the use of these natural substances could be the functioning of PQQ as the growth stimulating substance.

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