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Type: Artigo
Title: Assessment of the inhibitory effect of free and encapsulated commercial nisin (nisaplin (r)), tested alone and in combination, on listeria monocytogenes and bacillus cereus in refrigerated milk
Author: Martinez, Rafael Chacon Ruiz
Alvarenga, Veronica Ortiz
Thomazini, Marcelo
Fávaro-Trindade, Carmen Sílvia
Sant'Ana, Anderson de Souza
Abstract: The antimicrobial effect of free and encapsulated (carrier agent: gum Arabic) commercial nisin (Nisaplin®) against Listeria monocytogenes ATCC 7644 (Lm) and Bacillus cereus IAL 55 (Bc) in refrigerated (6 ± 1 °C) milk was determined throughout 21 days (d). Skim and whole milk samples containing free and encapsulated commercial nisin (0.25–1.0 mg/L, alone and combined) were contaminated, individually, with Lm or Bc (vegetative cells and spores) and the microorganisms' counts assessed every 3 d. Encapsulated commercial nisin presented characteristic traits of spray-dried products and stable antimicrobial activity under refrigeration (90 days). In both skimmed and whole milk, free and encapsulated Nisaplin® combined (0.5 mg/L each) exhibited the strongest antilisterial effect (d21 – d0; P < 0.05), although Lm resistant cells were observed. Free and encapsulated commercial nisin (0.25 mg/L) were highly effective against Bc spores germination and for the pathogen outgrowth inhibition (d21 – d0; P < 0.05) in both types of milk, improving the food product microbiological safety
Subject: Bacteriocinas
Country: Países Baixos
Editor: Elsevier
Rights: Fechado
Identifier DOI: 10.1016/j.lwt.2015.12.027
Date Issue: 2016
Appears in Collections:FEA - Artigos e Outros Documentos

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