Influencia de los métodos de procesado en la biodiversidad bacteriana y la resistencia a antimicrobianos en alimentos vegetales

Supervised by:
  1. Antonio Gálvez del Postigo Ruiz Director
  2. María José Grande Burgos Co-director
  3. Maria del Rosario Lucas Lopez Co-director

Defence university: Universidad de Jaén

Fecha de defensa: 13 May 2022

  1. Gloria Díaz Ruiz Chair
  2. Rubén Pérez Pulido Secretary
  3. Antonio Cobo Molinos Committee member

Type: Thesis

Teseo: 776613 DIALNET


Three plant foods were chosen to determine the influence of, on the one hand, different high hydrostatic pressure (HHP) treatments on bacterial diversity and antimicrobial resistance in guacamole and dressing at different refrigerated storage times and, on the other hand, the influence of washing with enterocin AS- 48 on microbial load and diversity in blueberries. Counts were carried out in different selective and general culture media, observing in all cases lower counts for samples treated with either HHP or bacteriocin, compared to the controls. The biodiversity study was carried out by mass sequencing and in general a clear predominance of the phylum Proteobacteria was observed, followed, to a lesser extent, by Firmicutes. Several guacamole and dressing strains were identified for the study of their antimicrobial resistance profile (biocide and antibiotic resistance assay and detection of genetic determinants of resistance), finding multi-resistant strains.