Antibacterial activity of bacteriocin-like substance P34 on Listeria monocytogenes in chicken sausage

• Main Authors: Voltaire Sant'Anna, Deoni A.F. Quadros, Amanda S. Motta, Adriano Brandelli
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Microbiologia 2013-12-01
• Series: Brazilian Journal of Microbiology
• Subjects: bacteriocin; chilled chicken sausage; Listeria monocytogenes; biopreservation
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822013000400019&lng=en&tlng=en

The antimicrobial activity of the bacteriocin-like substance (BLS) P34 against Listeria monocytogenes was investigated in chicken sausage. The BLS was applied to chicken sausages (256 AU g-1) previously inoculated with a suspension of 10² cfu g-1 of L. monocytogenes. BLS P34 inhibited the indicator microorganism in situ in all incubation times for up to 10 days at 5 °C. The effectiveness of BLS P34 was increased when it was added in combination with nisin. The bacteriocin was also tested in natural eatable natural bovine wrapping (salty semi-dried tripe) against the same indicator microorganism, also showing inhibitory capability in vitro. BLS P34 showed potential to control L. monocytogenes in refrigerated meat products.