Inhibition of Listeria monocytogenes in dairy products using the bacteriocin-like peptide cerein 8A
- 作者：Delmar Bizani ; Juliana A.C. Morrissy ; Ana P.M. Dominguez ; Adriano Br ; elli
- 关键词：Antimicrobial ; Bacteriocin ; Cheese ; Listeriosis ; Milk
- 刊名：International Journal of Food Microbiology
- 出版年：2008
- 期刊代码：63_01681605
- 类别：abs
- 出版时间：31 January 2008
- 卷：121
- 期：2
- 页码：229-233
- 文件大小：286 K
摘要
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 °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 °C. This antimicrobial peptide shows potential use as a biopreservative for application in dairy products.