Isolation of dimethyl sulfone-degrading microorganisms and application to odorless degradation of dimethyl sulfoxide.
With the objective of developing an odorless biodegradation process for dimethyl sulfoxide (DMSO), Hyphomicrobium sp. WU-OM3 was isolated. During the cultivation of strain WU-OM3 cells with 20 mM dimethyl sulfone (DMSO2) as the sole carbon source, DMSO2 was completely consumed within 48 h and sulfate ion accumulated in the culture broth. Methanesulfonate was also detected as an intermediate of DMSO2 degradation. By combining the DMSO-oxidizing microorganism and strain WU-OM3 cells, 0.64 mM (50 mg/l) DMSO was degraded to sulfate ion with 80% molar conversion ratio.
Kino
Kuniki
K
Department of Applied Chemistry, School of Science and Engineering, Waseda University, 3-4-1 Ohkubo, Tokyo 169-8555, Japan. kkino@waseda.jp
Murakami-Nitta
Takako
T
Oishi
Masashi
M
Ishiguro
Seiji
S
Kirimura
Kohtaro
K