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Type: Artigo de Periódico
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
RCR; Alvarenga
VO; Thomazini
M; Favaro-Trindade
CS; Sant'Ana
Abstract: The antimicrobial effect of free and encapsulated (carrier agent: gum Arabic) commercial nisin (Nisaplin (R)) against Listeria monocytogenes ATCC 7644 (Lm) and Bacillus cereus IAL 55 (Bc) in refrigerated (6 +/- 1 degrees 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 (R) 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. (C) 2015 Elsevier Ltd. All rights reserved.
Subject: Foodborne Pathogens
Gum Arabic
Citation: Lwt-food Science And Technology. ELSEVIER SCIENCE BV, n. 68, p. 67 - 75.
Rights: fechado
Identifier DOI: 10.1016/j.lwt.2015.12.027
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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