Comparison of predicted and impedance determined growth of Listeria innocua in complex food matrices.
Conductance
Food
Growth rates
Impedance
Predictive microbiology
Journal
Food microbiology
ISSN: 1095-9998
Titre abrégé: Food Microbiol
Pays: England
ID NLM: 8601127
Informations de publication
Date de publication:
May 2020
May 2020
Historique:
received:
20
05
2019
revised:
17
09
2019
accepted:
13
11
2019
entrez:
18
1
2020
pubmed:
18
1
2020
medline:
27
2
2020
Statut:
ppublish
Résumé
Indirect impedance has been used for the detection and enumeration of bacteria, however there is limited data regarding the ability of the method to measure growth and inhibition of microorganisms in food in response to preservatives. The aim of this study was to evaluate the suitability of the technique to determine maximum growth rates of Listeria innocua (used as a surrogate for Listeria monocytogenes) in complex food matrices to which multiple preservative factors had been applied and assess the suitability of the data for use in predictive microbiology. Growth of L. innocua in laboratory medium (BHI broth) and two food matrices (zucchini purée and béarnaise sauce) under varying conditions of pH (5 & 5.3), water activity (0.93, 0.96 & 0.98) and acetic and propionic acid concentration (0, 1 & 2 mM) was monitored by the conductimetric Rapid Automated Bacterial Impedance Technology (R.A.B.I.T) system by means of CO
Identifiants
pubmed: 31948622
pii: S0740-0020(19)30991-8
doi: 10.1016/j.fm.2019.103381
pii:
doi:
Substances chimiques
Water
059QF0KO0R
Carbon Dioxide
142M471B3J
Types de publication
Comparative Study
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
103381Informations de copyright
Copyright © 2019 Elsevier Ltd. All rights reserved.