Inhibition of Salmonella enterica Cells in Deli-Type Salad by Enterocin AS-48 in Combination with Other Antimicrobials

Probiotics and Antimicrobial Proteins
Antonio Cobo MolinosA Gálvez

Abstract

The cyclic antibacterial peptide enterocin AS-48 acted synergistically with p-hydroxybenzoic acid methyl ester (PHBME) and with 2-nitropropanol against Salmonella enterica serovar Enteritidis CECT 4300 in Russian salad. In challenge tests on a cocktail of Salmonella strains (S. enterica ssp. enterica serotype Typhi CECT 409, S. enterica ssp. enterica serovar Choleraesuis CECT 915, S. enterica ssp. enterica serovar Enteritidis CECT 4300, S. enterica ssp. arizonae serovar Arizonae CECT 4395, and S. enterica ssp. salamae CECT 4000) in salad at 10°C, the combinations of PHBME and AS-48 (80 μg/g) or 2-nitropropanol and AS-48 (40 μg/g) reduced the concentrations of viable Salmonella from 4.27 to 4.75 log CFU/g down to the limit of detection for 7 days. Salmonella populations did not increase in control samples (without any antimicrobials or in the presence of AS-48 alone) probably due to the low pH of this type of salad and low temperature of incubation, but retained over 85% viability after 1 week. This work opens new possibilities to expand the spectrum of inhibition of enterocin AS-48 against Salmonella enterica.

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Citations

May 1, 2013·Critical Reviews in Food Science and Nutrition·Paulraj KanmaniVenkatesan Arul
Aug 15, 2014·Critical Reviews in Food Science and Nutrition·Vandana BaliJohn F Kennedy
Dec 11, 2014·International Journal of Molecular Sciences·María José Grande BurgosRosario Lucas
Jun 1, 2010·Probiotics and Antimicrobial Proteins·Hikmate AbriouelAntonio Gálvez
Aug 11, 2015·Journal of Food Science·María José Grande BurgosRosario Lucas López
Apr 4, 2021·Animals : an Open Access Journal From MDPI·Po-Yun Teng, Woo Kyun Kim

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