Characteristics of a Biopolymer Flocculant Produced by Bacillus sp. PY-90

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概要

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• A biopolymer flocculant-producing bacterium, strain PY-90,was isolated and considered to belong to Bacillus subtilis. For the production of biopolymer flocculant by strain PY-90,a medium containing 2 to 5% L-glutamic acid as a nitrogen source was suitable. The biopolymer flocculant was a homopolymer composed of glutamic acid residues and was presumed to be poly(γ-glutamic acid). In kaolin suspension, the highest flocculating activity was attained at the biopolymer flocculant concentratioin of 20 mg/l. The flocculating activity was increased by the addition of Ca^<2+>, and the optimum concentration of which was about 2 to 8 mM. The flocculating activity was high in an acidic pH range of 3.0 to 5.0,and decreased upon heating at 100℃.

• 社団法人日本生物工学会の論文
• 1995-04-25

著者

• Hayashi Sachio

  Department Of Materials Science Faculty Of Engineering Miyazaki University

• HIROSE Jun

  Department of Immunology, Pharmacology Research Labs, Astellas Pharma, Inc.

• Takasaki Yoshiyuki

  Department of Materials Science, Faculty of Engineering, Miyazaki University

• Hayashi S

  Miyazaki Univ.

• Hayashi Satio

  Department Of Materials Science Faculty Of Engineering Miyazaki University

• YOKOI HARUHIKO

  Department of Materials Science, Faculty of Engineering, Miyazaki University

• Takasaki Yoshiyuki

  Department Of Applied Chemistry Faculty Of Engineering Miyazaki University

• Takasaki Yoshiyuki

  Laboratory Of Biophysical Chemistry College Of Agriculture Osaka Prefecture University:dainippon Phe

• Hirose Jun

  Department Of Applied Chemistry Miyazaki University

• Yokoi Haruhiko

  Department Of Applied Chemistry Miyazaki University

• Yokoi Haruhiko

  Department Of Applied Chemistry Faculty Of Engineering University Of Miyazaki

• NATSUDA OSAMU

  Department of Materials Science, Faculty of Engineering, Miyazaki University

• HAYASHI SACHIO

  Depatment of Materials Science, Faculty of Engineering, Miyazaki University

• Natsuda Osamu

  Department Of Materials Science Faculty Of Engineering Miyazaki University

• Hirose Jun

  Department Of Agricultural Chemistry Faculty Of Agriculture Tamagawa University

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