T. Honma et T. Akino, ISOLATION AND CHARACTERIZATION OF A HYDROGEN SULFIDE-REMOVING BACTERIUM, PSEUDOMONAS SP. STRAIN DO-1, Bioscience, biotechnology, and biochemistry, 62(9), 1998, pp. 1684-1687
Five microbial strains that removed hydrogen sulfide (H2S) or methylme
rcaptan (CH,SH) gas were newly isolated from soil samples. Strain DO-1
, one of the isolates, was identified as a member of Pseudomonas sp.,
and it's immobilized cells removed 1 or 10 ppm of H2S gas within 2 hou
rs. When strain DO-1 was cultured aerobically in a flask containing nu
trient broth medium, the deodorizing activity increased, depending on
the growth of the culture, and the maximum activity was obtained after
48 hours. Even though the immobilized cells were stored at 4 or 25 de
grees C in sealed bottles for 6 months, the deodorizing activity remai
ned. Throughout this study, strain DO-1 removed H2S gas without prelim
inary feeding or exposure to sulfur compounds as growth substrates or
inducers. These characteristics are advantageous for the deodorization
of the malodorous gases surrounding us in daily life.