Isolation and Characterization of a Nonheterocystous Cyanobacterium, Lyngbya sp. Isolate No.108, for Large-quantity Hydrogen Production(Microbiology & Fermentation Industry)

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Of 52 algal cultures isolated in the Seto Inland Sea area, one cyanobacterium produced large quantities of H_2. This organisms, isolate 108, was a freshwater, nonheterocystous, ensheathed and filamentous cyanobacterium, and was morphologically identified as a Lyngbya species. The optimum conditions for hydrogen productions by it were: pH, 6.5; temperature, 30℃; and light intensity, 1,000lux, under fluorescent light. Low concentration of potassium nitrate (0.05 g/l) and yeast extract (0.01%) stimulated its growth and hydrogen production. Of the mineral salts tested, FeSo_4 markedly stimulated the growth of isolate 108. The highest rate of hydrogen production was 124 ml/g cells/day. The carbohydrate content of cultures was decreased, by 85%, during hydrogen production.
社団法人日本農芸化学会の論文
1988-08-23