Inhibition of the Anaerobic Growth of Brochothrix thermosphacta by Lactic Acid

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Abstract
Brochothrix thermosphacta can grow aerobically in the presence of 210 mM l -lactate and anaerobically in its absence at pH values down to at least 5.5. Anaerobic growth is, however, inhibited by l -lactate, the concentration of undissociated lactic acid being the governing factor. Postrigor meat usually contains sufficient lactic acid to select against the anaerobic growth of B. thermosphacta . At least some Lactobacillaceae strains are more resistant to lactic acid and so their growth is favored on vacuum-packaged meat.