Hydrogen Production by an Immobilized Cyanobacterium, Lyngbya sp.

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概要

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• The mesophilic, alkaliphilic, flamentous, and nonheterocystous fresh water cyanobacterium, Lyngbya sp. strain no. 108,was immobilized on calcium alginate gel. The optimum immobilizing conditions for hydrogen evolution were : 4% (w/v) alginate; 0.05 M CaCl_2; and 0.11 mg dry microbial cells/ml gel. The pH, temperature, and light intensity were 9.0,30℃, and 1,000 lx, respectively. The optimum conditions for growth of immobilized cells were pH 9.5,27℃, and 1,000 lx. Immobilized cells priduced 25% more hydrogen than did free cells. The cells were incubated in a reaction mixture for hydrogen evolution and recultivated for 5 days in nitrogen-limited medium. These incubation and reactivation steps were repeated 3 times, after which, the cell yield and the amount of hydrogen evolution were 2.6- and 3.4-fold higher, respectively.

• 公益社団法人日本生物工学会の論文
• 1987-10-25

著者

• Ohta Y

  Laboratory For Microbial Biochemistry Faculty Of Applied Biological Science Hiroshima University

• Ohta Yoshiyuki

  Laboratory For Microbial Biochemistry Faculty Of Applied Biological Science Hiroshima University

• Kuwada Yoshinori

  Laboratory For Microbial Biochemistry Faculty Of Applied Biological Science Hiroshima University

• KUWADA YOSHINORI

  Laboratory for Microbial Biochemistry, Faculty of Applied Biological Science, Hiroshima University,

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