Unravelling the Molecular Mechanisms Underlying the Protective Effect of Lactate on the High-Pressure Resistance of Listeria monocytogenes
Visualitza/Obre
Autor/a
Ferrocino, Ilario
Cocolin, Luca
Bover-Cid, Sara
Rantsiou, Kalliopi
Data de publicació
2021-04-30ISBN
2218-273X
Resum
Formulations with lactate as an antimicrobial and high-pressure processing (HPP) as a lethal treatment are combined strategies used to control L. monocytogenes in cooked meat products. Previous studies have shown that when HPP is applied in products with lactate, the inactivation of L. monocytogenes is lower than that without lactate. The purpose of the present work was to identify the molecular mechanisms underlying the piezo-protection effect of lactate. Two L. monocytogenes strains (CTC1034 and EGDe) were independently inoculated in a cooked ham model medium without and with 2.8% potassium lactate. Samples were pressurized at 400 MPa for 10 min at 10 °C. Samples were subjected to RNA extraction, and a shotgun transcriptome sequencing was performed. The short exposure of L. monocytogenes cells to lactate through its inoculation in a cooked ham model with lactate 1h before HPP promoted a shift in the pathogen’s central metabolism, favoring the metabolism of propanediol and ethanolamine together with the synthesis of the B12 cofactor. Moreover, the results suggest an activated methyl cycle that would promote modifications in membrane properties resulting in an enhanced resistance of the pathogen to HPP. This study provides insights on the mechanisms developed by L. monocytogenes in response to lactate and/or HPP and sheds light on the understanding of the piezo-protective effect of lactate.
Tipus de document
Article
Versió del document
Versió publicada
Llengua
English
Matèries (CDU)
663/664 - Aliments i nutrició. Enologia. Olis. Greixos
Pàgines
16
Publicat per
MDPI
Publicat a
Biomolecules
Citació
Serra-Castelló, Cristina, Ilario Ferrocino, Anna Jofré, Luca Cocolin, Sara Bover-Cid, and Kalliopi Rantsiou. 2021. "Unravelling The Molecular Mechanisms Underlying The Protective Effect Of Lactate On The High-Pressure Resistance Of Listeria Monocytogenes". Biomolecules 11 (5): 677. doi:10.3390/biom11050677.
Programa
Funcionalitat i Seguretat Alimentària
Aquest element apareix en la col·lecció o col·leccions següent(s)
- ARTICLES CIENTÍFICS [2850]
Excepte que s'indiqui una altra cosa, la llicència de l'ítem es descriu com http://creativecommons.org/licenses/by/4.0/