Bacteroides cellulosolvens sp. nov., a Cellulolytic Species from Sewage Sludge†

A new mesophilic, cellulolytic species of Bacteroides was isolated from a methanogenic cellulose enrichment culture of municipal sewage sludge and is described. This species ferments only cellulose and cellobiose. The fermentation products are acetic acid. CO2, H2, ethanol, and small amounts of lactic acid. The deoxyribonucleic acid base composition is 43 mol% guanine plus cytosine. The name Bacteroides cellulosolvens is proposed. Type strain WM2 is deposited in the National Research Council of Canada culture collection as strain NRCC 2944.

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