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  • Title: Inhibition of Listeria monocytogenes in dairy products using the bacteriocin-like peptide cerein 8A.
    Author: Bizani D, Morrissy JA, Dominguez AP, Brandelli A.
    Journal: Int J Food Microbiol; 2008 Jan 31; 121(2):229-33. PubMed ID: 18068253.
    Abstract:
    The efficacy of the antimicrobial peptide cerein 8A to control the development of Listeria monocytogenes in milk and soft cheese was investigated. The addition of 160 AU ml(-1) cerein 8A to UHT milk resulted in a decrease of 3 log cycles in viable cells within the 14-day period at 4 degrees C. The viable counts of L. monocytogenes in pasteurized milk samples containing cerein 8A was lower than those observed in controls without bacteriocin. Addition of cerein 8A to Minas-type soft cheese caused a delay in the start of exponential growth phase, although similar counts were observed after day 6. When cerein 8A was used to control cheese surface contamination by L. monocytogenes, a decrease of 2 log cycles in viable counts of cerein-treated samples was observed during 30 days at 4 degrees C. This antimicrobial peptide shows potential use as a biopreservative for application in dairy products.
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