brachybacterium alimentarium brachybacterium alimentarium brachybacterium alimentarium is a species of gram positive, facultatively anaerobic, yellow-pigmented bacterium. the cells are coccoid during the stationary phase, and irregular rods during the exponential phase. it was first isolated from the surfaces of beaufort and gruyère cheeses in 1978. further work led to the proposal of the new species in 1996, and the name is derived from the latin alimentanium (pertaining to food). brachybacterium alimentarium scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: micrococcales family: dermabacteraceae genus: brachybacterium species: b. alimentarium binomial name brachybacterium alimentariumschubert et al. 1996 the optimum growth temperature for b. alimentarium is 30 °c, but can grow in the 20-37 °c range. the optimum ph is 7.3.