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Agronomía Colombiana
versão impressa ISSN 0120-9965
Resumo
GUTIERREZ-CORTES, Carolina; SUAREZ, Héctor; BUITRAGO, Gustavo e DIAZ-MORENO, Consuelo. Isolation and evaluation of the antagonist activity of lactic acid bacteria in raw cow milk. Agron. colomb. [online]. 2017, vol.35, n.3, pp.357-364. ISSN 0120-9965. https://doi.org/10.15446/agron.colomb.v35n3.63911.
Lactic acid bacteria (LAB) are considered as a good alternative to reduce the risk of food borne diseases in food industry. In addition to the improvement effects on the organoleptic characteristics of fermented foods from the LAB metabolites, they can inhibit the growth of microorganisms responsible of the food spoilage. This work is an advance on the biodiversity exploration of natural additives in food. Isolation, identification and screening of potential antimicrobial activity of LAB were the aims on this work. Species of Lactobacillus (Lb. casei, Lb. brevis, Lb. paracasei, and Lb. plantarum) and Pediococcus acidilactici were identified and their antagonism against Escherichia coli ATCC 25922, Staphylococcus aureus ATCC 25923 and Listeria monocytogenes ATCC 7644 was demonstrated.
Palavras-chave : antagonistic bacteria; raw milk; Lactobacillus; isolation; pathogen inhibition.