Table 2.

Percent incorporation of radiolabelled14CH4 into biomass and cell metabolites by various cultures of methanotrophsa

Time (days)% Incorporation of14CH4
M. parvusM. trichosporiumM. albusM. albus ChM. albus BM
04.5 ± 0.86.1 ± 0.42.0 ± 0.038.8 ± 2.229.4 ± 1.1
15.4 ± 0.25.1 ± 0.16.9 ± 1.6
25.0 ± 0.727.1 ± 4.923.8 ± 1.6
48.5 ± 0.310.1 ± 0.645.3 ± 0.8
  • a M. parvus,M. trichosporium, and M. albuswere grown under batch conditions with about 30% methane and then subjected to an incubation with atmospheric methane concentrations (see text for details). M. albus Ch was grown in a methanol-limited chemostat, and M. albus BM was grown in a batch culture with methanol; samples of the latter were obtained from stationary-phase growth. Values are means of triplicates ± 1 standard error.