Effect of the sequence of nisin and pulsed electric fields treatments and mechanisms involved in the inactivation of Listeria innocua in whey
The combination of nisin and pulsed electric fields (PEF) on Listeria innocua in liquid whey protein concentrate (LWPC) were studied with the purpose of enhancing nisin antibacterial action. The efficiency of the combined treatment of nisin and PEF was strongly dependent on the sequence of applicati...
Guardado en:
| Autores principales: | , , |
|---|---|
| Formato: | JOUR |
| Materias: | |
| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_02608774_v79_n1_p188_Gallo |
| Aporte de: |
| id |
todo:paper_02608774_v79_n1_p188_Gallo |
|---|---|
| record_format |
dspace |
| spelling |
todo:paper_02608774_v79_n1_p188_Gallo2023-10-03T15:12:19Z Effect of the sequence of nisin and pulsed electric fields treatments and mechanisms involved in the inactivation of Listeria innocua in whey Gallo, L.I. Pilosof, A.M.R. Jagus, R.J. Cheese whey Combined treatments Listeria innocua Nisin Pulsed electric fields Crops Electric field effects Food products Proteins Cell envelope Listeria innocua Nisin Pulsed electric fields Microorganisms Farm Crops Proteins Listeria innocua The combination of nisin and pulsed electric fields (PEF) on Listeria innocua in liquid whey protein concentrate (LWPC) were studied with the purpose of enhancing nisin antibacterial action. The efficiency of the combined treatment of nisin and PEF was strongly dependent on the sequence of application. The exposure to nisin after PEF produced an antagonistic effect on L. innocua inactivation. This behaviour could be mainly attributed to changes in the cell envelope and to modifications of the medium caused by PEF application. Consequently, the posterior action of nisin was reduced, showing an increase in the resistance of L. innocua to nisin. In opposite, the addition of nisin prior to PEF treatment exhibited an additive and slightly synergistic effect, suggesting that the binding of nisin to the cell membrane would increase the susceptibility of the microorganism to PEF treatment. © 2006 Elsevier Ltd. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_02608774_v79_n1_p188_Gallo |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Cheese whey Combined treatments Listeria innocua Nisin Pulsed electric fields Crops Electric field effects Food products Proteins Cell envelope Listeria innocua Nisin Pulsed electric fields Microorganisms Farm Crops Proteins Listeria innocua |
| spellingShingle |
Cheese whey Combined treatments Listeria innocua Nisin Pulsed electric fields Crops Electric field effects Food products Proteins Cell envelope Listeria innocua Nisin Pulsed electric fields Microorganisms Farm Crops Proteins Listeria innocua Gallo, L.I. Pilosof, A.M.R. Jagus, R.J. Effect of the sequence of nisin and pulsed electric fields treatments and mechanisms involved in the inactivation of Listeria innocua in whey |
| topic_facet |
Cheese whey Combined treatments Listeria innocua Nisin Pulsed electric fields Crops Electric field effects Food products Proteins Cell envelope Listeria innocua Nisin Pulsed electric fields Microorganisms Farm Crops Proteins Listeria innocua |
| description |
The combination of nisin and pulsed electric fields (PEF) on Listeria innocua in liquid whey protein concentrate (LWPC) were studied with the purpose of enhancing nisin antibacterial action. The efficiency of the combined treatment of nisin and PEF was strongly dependent on the sequence of application. The exposure to nisin after PEF produced an antagonistic effect on L. innocua inactivation. This behaviour could be mainly attributed to changes in the cell envelope and to modifications of the medium caused by PEF application. Consequently, the posterior action of nisin was reduced, showing an increase in the resistance of L. innocua to nisin. In opposite, the addition of nisin prior to PEF treatment exhibited an additive and slightly synergistic effect, suggesting that the binding of nisin to the cell membrane would increase the susceptibility of the microorganism to PEF treatment. © 2006 Elsevier Ltd. All rights reserved. |
| format |
JOUR |
| author |
Gallo, L.I. Pilosof, A.M.R. Jagus, R.J. |
| author_facet |
Gallo, L.I. Pilosof, A.M.R. Jagus, R.J. |
| author_sort |
Gallo, L.I. |
| title |
Effect of the sequence of nisin and pulsed electric fields treatments and mechanisms involved in the inactivation of Listeria innocua in whey |
| title_short |
Effect of the sequence of nisin and pulsed electric fields treatments and mechanisms involved in the inactivation of Listeria innocua in whey |
| title_full |
Effect of the sequence of nisin and pulsed electric fields treatments and mechanisms involved in the inactivation of Listeria innocua in whey |
| title_fullStr |
Effect of the sequence of nisin and pulsed electric fields treatments and mechanisms involved in the inactivation of Listeria innocua in whey |
| title_full_unstemmed |
Effect of the sequence of nisin and pulsed electric fields treatments and mechanisms involved in the inactivation of Listeria innocua in whey |
| title_sort |
effect of the sequence of nisin and pulsed electric fields treatments and mechanisms involved in the inactivation of listeria innocua in whey |
| url |
http://hdl.handle.net/20.500.12110/paper_02608774_v79_n1_p188_Gallo |
| work_keys_str_mv |
AT galloli effectofthesequenceofnisinandpulsedelectricfieldstreatmentsandmechanismsinvolvedintheinactivationoflisteriainnocuainwhey AT pilosofamr effectofthesequenceofnisinandpulsedelectricfieldstreatmentsandmechanismsinvolvedintheinactivationoflisteriainnocuainwhey AT jagusrj effectofthesequenceofnisinandpulsedelectricfieldstreatmentsandmechanismsinvolvedintheinactivationoflisteriainnocuainwhey |
| _version_ |
1807314657025720320 |