Biodegradation of 2,4-Dichlorophenol at Low Concentration and Specific Growth Rate of Pseudomonas sp. Strain DP-4

概要

論文の詳細を見る
In a pure culture of Pseudomonas sp. strain DP-4,a 2,4-dichlorophenol (DCP)-assimilator, l0^2 cell/ml of DP-4 increased to 10^6 cell/ml at the early stationary phase in a mineral salts medium to which no organic substrates were deliberately added. This increase was attributable to the expense of ca. 2μg C/ml of contaminated organic substrates in the medium. In the culture of DP-4 with ca. l0^6 cell/ml of the heterotrophic microorganisms which were no DCP-degraders, the density of DP-4 did not increase in the mineral salts medium without DCP, and when DCP was added the density of DP-4 increased with the the concentration of DCP. In the DP-4 culture with the heterotrophic microorganisms, the specific growth rates (μ) of DP-4 were measured at various concentrations of DCP in the range 0.01 - 10μg C/ml, and μ of DP-4 was fitted to Monod's equation. The maximum specific growth rate (3.2/day) and the half saturation constant (0.11μg DCP-C/ml) were considered as kinetic parameters when DP-4 assimilated DCP as a sole source of carbon.
1993-12-31