1948 年 61 巻 721-726 号 p. 109-111
Chromatium weissei Party Winogradsky, developing in the swamp in Yumoto, Nikko, had been isolated, and the most suitable cultural conditions for its growth were examined.
1) The culture solution, prepared from 0.1% Na2S, 0.1% NaHCO3, 0, 05% (NH4)2SO4, 0.0 4% K2HPO4 and 0, 03% MgSO47H2O, was found for the organisms. 2) The pH value of media, suitable for the growth of the organisms was at 6.8. 3) The suitable temperature for its growth was about 20°C. 4) The strength of light beneficial for its growth was 330lux. Its flagella is polar and tufted, and its body is covered with gelatinous membrane. It turns into various irregular forms in old culture.