| dc.contributor.author |
Boziaris, IS |
en |
| dc.contributor.author |
Nychas, G-JE |
en |
| dc.date.accessioned |
2014-06-06T06:47:04Z |
|
| dc.date.available |
2014-06-06T06:47:04Z |
|
| dc.date.issued |
2006 |
en |
| dc.identifier.issn |
07400020 |
en |
| dc.identifier.uri |
http://dx.doi.org/10.1016/j.fm.2006.03.003 |
en |
| dc.identifier.uri |
http://62.217.125.90/xmlui/handle/123456789/3374 |
|
| dc.subject |
Growth/no growth |
en |
| dc.subject |
Listeria |
en |
| dc.subject |
Nisin |
en |
| dc.subject.other |
antiinfective agent |
en |
| dc.subject.other |
nisin |
en |
| dc.subject.other |
water |
en |
| dc.subject.other |
article |
en |
| dc.subject.other |
bacterial count |
en |
| dc.subject.other |
biological model |
en |
| dc.subject.other |
drug effect |
en |
| dc.subject.other |
food control |
en |
| dc.subject.other |
food preservation |
en |
| dc.subject.other |
growth, development and aging |
en |
| dc.subject.other |
kinetics |
en |
| dc.subject.other |
Listeria monocytogenes |
en |
| dc.subject.other |
metabolism |
en |
| dc.subject.other |
methodology |
en |
| dc.subject.other |
pH |
en |
| dc.subject.other |
statistical model |
en |
| dc.subject.other |
temperature |
en |
| dc.subject.other |
Anti-Bacterial Agents |
en |
| dc.subject.other |
Colony Count, Microbial |
en |
| dc.subject.other |
Food Microbiology |
en |
| dc.subject.other |
Food Preservation |
en |
| dc.subject.other |
Hydrogen-Ion Concentration |
en |
| dc.subject.other |
Kinetics |
en |
| dc.subject.other |
Listeria monocytogenes |
en |
| dc.subject.other |
Logistic Models |
en |
| dc.subject.other |
Models, Biological |
en |
| dc.subject.other |
Nisin |
en |
| dc.subject.other |
Temperature |
en |
| dc.subject.other |
Water |
en |
| dc.subject.other |
Listeria monocytogenes |
en |
| dc.title |
Effect of nisin on growth boundaries of Listeria monocytogenes Scott A, at various temperatures, pH and water activities |
en |
| heal.type |
journalArticle |
en |
| heal.identifier.primary |
10.1016/j.fm.2006.03.003 |
en |
| heal.publicationDate |
2006 |
en |
| heal.abstract |
The effect of nisin on growth boundaries of Listeria monocytogenes Scott A in Tryptone Soy Broth (TSB) under different aws, pH, and temperatures was studied. Growth/no growth turbidity data was modeled using logistic regression. Combinations of various temperatures (5-35 °C), pH (4.05-6.70) adjusted with HCl, aws (0.937-0.998) NaCl (0.5-10.5%) and nisin (0-100 IU/ml) were used to monitor the growth/no growth response of L. monocytogenes Scott A for 60 days. The concordance of the logistic regression model was 99.4%, indicating successful data fitting. The minimum pH at which growth was observed was 4.81 at the temperature range of 25-35 °C and at aw as high as 0.992. Growth was observed at aw as low as 0.937, at pH 6.7, at the temperature range of 25-35 °C. Increasing nisin concentrations above 25 IU/ml resulted in a more inhibitory environment for L. monocytogenes. Presence of 100 IU/ml resulted in a minimum pH for growth at 5.20, and a minimum aw at 0.967 at the temperature range of 25-35 °C. It was remarkable that low to medium salt concentrations (2.5-4.5 NaCl% w/v) provided a protective effect against inhibition of L. monocytogenes by nisin. The present study points out the applicability of growth/no growth modeling in order to study any interactions between various factors affecting initiation of growth of micro-organisms, in which its turn helps the understudying of microbe-food ecosystem relations and the development of safer food. © 2006 Elsevier Ltd. All rights reserved. |
en |
| heal.journalName |
Food Microbiology |
en |
| dc.identifier.issue |
8 |
en |
| dc.identifier.volume |
23 |
en |
| dc.identifier.doi |
10.1016/j.fm.2006.03.003 |
en |
| dc.identifier.spage |
779 |
en |
| dc.identifier.epage |
784 |
en |