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Appl. Environ. Microbiol., Apr 1996, 1178-1181, Vol 62, No. 4
Copyright © 1996, American Society for Microbiology

Prevention of Histamine Formation in Cheese by Bacteriocin-Producing Lactic Acid Bacteria

HMLJ Joosten and M Nunez
Departamento de Tecnologia de Alimentos, CIT-INIA, 28040 Madrid, Spain

The susceptibility of 13 amine-forming lactobacilli to several bacteriocins was investigated by an agar diffusion assay. All strains were susceptible to nisin and to five bacteriocins of enterococcal origin. Pediocin PA-1, bavaricin A, lactococcin A, and a bacteriocin from Enterococcus faecalis 1061 did not show inhibitory activity. Two bacteriocin-producing enterococci and a nisin-producing Lactococcus lactis strain were employed as starters in separate cheese-making experiments. Outgrowth of histamine producer Lactobacillus buchneri St2A, which was added to the milk at levels of up to 190 CFU/ml, was almost completely inhibited. No histamine formation was detected in the cheeses made with bacteriocin-producing starters. In the control cheese without bacteriocin, St2A reached levels of 1.1 x 10(sup8) CFU/g, and 200 mg of histamine per kg was found after 4 months of ripening. To our knowledge, this is the first report of bacteriocin-mediated inhibition of histamine formation in foods.


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Copyright © 1996 by the American Society for Microbiology. All rights reserved.