Publicação
Comparing growth and survival kinetics of persistent and sporadic strains of listeria monocytogenes from alheira sausage
| dc.contributor.author | Meneses, Rui | |
| dc.contributor.author | Pereira, Catarina | |
| dc.contributor.author | Ferreira, Vânia | |
| dc.contributor.author | Magalhães, Rui | |
| dc.contributor.author | Barbosa, Joana | |
| dc.contributor.author | Silva, Beatriz Nunes | |
| dc.contributor.author | Teixeira, Paula | |
| dc.date.accessioned | 2025-02-20T17:22:02Z | |
| dc.date.embargo | 2025-05-02 | |
| dc.date.issued | 2024-04 | |
| dc.description.abstract | Motivation: L. monocytogenes is known to persist in food processing environments, with some strains being routinely isolated (persistent), while others are only occasionally found (sporadic). This raises the question: Are persistent strains more resistant to stress conditions compared to sporadic strains from similar sources? Objective: To investigate the effect of food processing related stresses (pH=6 and 8% NaCl) on the behaviour of L. monocytogenes isolates from alheira sausage, compared to a set of reference conditions (37 °C, 0% NaCl, pH=7). Results: Compared to the reference conditions: High salinity conditions → significantly longer lag times and lower μmax for all isolates Low pH (pH = 6) reduced μmax but also shortened the lag phase for most isolates These sub-optimal conditions were insufficient to promote pathogen decay The persistent strains #2981 and #3048 do not exhibit a particular behavior nor appear to have increased resistance against the conditions tested This result is aligned with recent research. Conclusions: No significant differences were found between persistent and sporadic strains, suggesting that persistence events may not be explained by a better aptitude for growth. However, further research with a larger number of isolates is needed. | pt_PT |
| dc.description.version | info:eu-repo/semantics/publishedVersion | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10400.14/48211 | |
| dc.language.iso | eng | pt_PT |
| dc.peerreviewed | yes | pt_PT |
| dc.title | Comparing growth and survival kinetics of persistent and sporadic strains of listeria monocytogenes from alheira sausage | pt_PT |
| dc.type | conference object | |
| dspace.entity.type | Publication | |
| oaire.citation.conferencePlace | Switzerland | pt_PT |
| oaire.citation.title | 2024 IAFP European Symposium | pt_PT |
| rcaap.rights | embargoedAccess | pt_PT |
| rcaap.type | conferenceObject | pt_PT |