Isolation and Characterization of a Fast-Growing, Thermophilic Methanobacterium Species

AUTOR(ES)

Zhao, Yizhang

RESUMO

A thermophilic, autotrophic methanogen (strain CB12, DSM 3664) was isolated from a mesophilic biogas digestor. This bacterium used H2-CO2 or formate as a substrate and grew as short rods, sometimes in pairs and in crooked filaments. Motility was not observed. Its optimum temperature (56°C) was lower than that of other thermophilic members of the genus Methanobacterium. The maximum observed specific growth rate was 0.564 h−1 (74-min doubling time).

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