Characterization of a potato starch-digesting bacterium and its production of amylase.

• TANIGUCHI Hajime

  Department of Agricultural Chemistry, The University of Tokyo

• ODASHIMA Fumihiko

  Department of Agricultural Chemistry, The University of Tokyo

• IGARASHI Makoto

  Department of Agricultural Chemistry, The University of Tokyo

• MARUYAMA Yoshiharu

  Department of Agricultural Chemistry, The University of Tokyo

• NAKAMURA Michinori

  Department of Agricultural Chemistry, The University of Tokyo Present address: Nodai Research Institute, Tokyo University of Agriculture

抄録

A bacterium which can utilize potato starch granules as sole carbon source was isolated and identified as Bacillus circulans from its physiological and biochemical properties. Scanning electron microscopic observation of potato starch granules recovered from the culture broth revealed that granules were degraded gradually from their surface resulting in elongated granules with layered structures on their surface. This bacterium produced extracellular amylase which can digest potato starch granules in vitro. The amylase has a unique property in that it produces only maltohexaose from gelatinized starch in the early stage of the reaction. For the production of this amylase potato starch was found to be most effective while soluble sugars including gelatinized starch and maltose had little effect.

収録刊行物

• Agricultural and Biological Chemistry

  Agricultural and Biological Chemistry 46 (8), 2107-2115, 1982

  公益社団法人 日本農芸化学会

キーワード

• General Agricultural and Biological Sciences
• General Biochemistry, Genetics and Molecular Biology

詳細情報

• CRID: 1390282681441175552
• NII論文ID: 130000027860
• DOI: 10.1271/bbb1961.46.2107
• COI: 1:CAS:528:DyaL38XlsVWnsrg%3D
• ISSN: 18811280
• ISSN: 00021369
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可