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The cell walls of Brevibacterium casei NCDO 2048, B. epidermidis NCDO 2286 and 14 B. linens isolates from cheese were shown to contain teichoic acids as the dominant non-peptidoglycan polymers. The variation in teichoic acid composition was similar to that described earlier for B. linens strains and for B. iodinum. In B. casei NCDO 2048 a glycerol teichoic acid was found, whereas in B. epidermidis NCDO 2286 glycerol teichoic acid existed together with mannitol teichoic acid. The occurrence of teichoic acids in the cell walls of all Brevibacterium strains investigated constitutes a biochemical characteristic of the genus and is of chemotaxonomic relevance. The co-existence of glycerol and mannitol within the cell walls of the B. linens strains AC480 and AC577 was investigated in detail. The polyols belonged to separate polymers: a glycerol teichoic acid and a mannitol teichoic acid.
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