Flocculating Property of Extracellular Polymeric Substance Derived from a Marine Photosynthetic Bacterium, Rhodovulum sp.
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概要
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The effect of the extracellular polymeric substance(EPS)derived from a marine photosynthetic bacterium, Rhodovulum sp., on the flocculation of kaolin is described. The amount of EPS obtained and its flocculating activity were highly dependent on the extraction temperature and duration : high flocculating activity was obtained at a relatively low temperature(30℃)and long extraction time(60 min). The EPS was classified as a weak-anionic high-polymer group based on its pH profile, and its promoting effect on flocculation was dependent on the concentration of cationic ions and their valence. The relative influence of cations on the critical flocculating concentration(Cs, cr)followed the Schulze-Hardy rule for colloidal flocculation. This suggests that the promotion of flocculation by the additions of EPS and cations occurred as a result of the synergistic effect of the release of electrical repulsion by the cations and the formation of bridges between the EPS and the cations.
- 社団法人日本生物工学会の論文
- 1999-05-25
著者
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SUZUKI Yumiko
Department of Biomaterials, Faculty of Dental Science, Kyushu University
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Watanabe M
Foods And Liquors Research Laboratories Kyowa Hakko Kogyo Co. Ltd.
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Watanabe Masanori
Department of Chemistry, Faculty of Science, Tokyo University of Science
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Nishio N
Department Of Molecular Biotechnology Graduate School Of Advanced Sciences Of Matter Hiroshima Unive
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Nishio Naomichi
Department Of Fermentation Technology Faculty Of Engineering Hiroshima University
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NAKASHIMADA YUTAKA
Department of Molecular Biotechnology, Graduate School of Engineering, Hiroshima University
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Watanabe M
Graduate School Of Engineering Hiroshima Kokusai Gakuin University
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Sasaki K
Graduate School Of Engineering Hiroshima Kokusai Gakuin University
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SASAKI KEN
Hiroshima-Denki Institute of Technology
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Nakashimada Yutaka
Department Of Molecular Biotechnology Graduate School Of Advanced Sciences Of Matter Hiroshima Unive
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Nakashimada Yutaka
Department Of Molecular Biotechnology Graduate School Of Advanced Sciences Of Matter Hiroshima Unive
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Suzuki Yumiko
Department Of Biomaterials Faculty Of Dental Science Kyushu University:department Of Removable Prost
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Nishio Naomichi
Department Of Fermentation Technology Faculty Of Engineering Hiroshima Univeisity
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Suzuki Yumiko
Department Of Molecular Biotechnology Graduate School Of Advanced Sciences Of Matter Hiroshima Unive
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Nakashimada Yutaka
Department Of Fermentation Technology Faculty Of Engineering Hiroshima University
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Watanabe Masanori
Department Of Analytical Chemistry Faculty Of Engineering Yokohama National University
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