Efecto de recubrimientos activos y tratamientos con altas presiones en la biodiversidad bacteriana de dos alimentos modelo

  1. ORTEGA BLÁZQUEZ, IRENE
Supervised by:
  1. Rosario Lucas López Director
  2. María José Grande Burgos Co-director

Defence university: Universidad de Jaén

Fecha de defensa: 14 September 2018

Committee:
  1. Fernanda Ruiz Larrea Chair
  2. Rubén Pérez Pulido Secretary
  3. Antonio Cobo Molinos Committee member
Department:
  1. CIENCIAS DE LA SALUD

Type: Thesis

Teseo: 579915 DIALNET

Abstract

Packaging with plastics activated with antimicrobials or the application of high hydrostatic pressure (APH), are new food preservation techniques, to prevent food spoilage. The first objective of this work was to determine the efficacy of antimicrobial substances present in essential oils (carvacrol, thymol, eugenol, cinnamaldehyde and tyrosol) and enterocin AS-48, alone or in combination, in the inhibition of the formation of bacterial biofilms using low density polyethylene and polyethylene-polyamide. Once tested its effectiveness against different microorganisms, the effectiveness of plastic containers activated with AS-48 and thymol separately, or combined with APH on the inactivation of Listeria innocua was studied. Subsequently, the impact of plastic films activated with thymol and AS-48 together with APH on the load and bacterial diversity in model food systems was determined, demonstrating that the dynamics of bacterial populations is affected by these treatments.