Enhancement of bacteriocin production and antimicrobial activity of Pediococcus acidilactici HA-6111-2

J. M. Garcia, S. M. Castro, R. Casquete, J. Silva, R. Queirós, J. A. Saraiva, P. Teixeira*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


The effect of sequential treatments of pressure (50-150 MPa, 10°C, 5 min) and temperature (57°C, 15 min) on the survival and bacteriocin production of Pediococcus acidilactici HA-6111-2 cells in the exponential growth phase was assessed. The growth curves were fitted with the modified Gompertz model, and the estimated maximum specific growth rate was considered to be pressure dependent. A delay in the maximum value of bacteriocin production was registered for more severe pressure conditions, but it was found more notorious for pressure followed by temperature treatments. At lower pressure intensity treatment, regardless of the application order, there was an enhancement of bacteriocin production per cell when compared to the control while maintaining the maximum production value. Bacteriocin production after the treatments can be described by an exponential model.

Original languageEnglish
Pages (from-to)92-99
Number of pages8
JournalActa Alimentaria
Issue number1
Publication statusPublished - Mar 2017


  • Bacteriocin production
  • Enhancement
  • Pediococcus acidilactici HA-6111-2
  • Sequential treatments


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