Suitability of lactic acid bacteria and deriving antibacterial preparations to enhance shelf-life and consumer safety of emulsion type sausages.

Suitability of lactic acid bacteria and deriving antibacterial preparations to enhance shelf-life and consumer safety of emulsion type sausages. Food Microbiol. 2021 Apr;94:103673 Authors: Bungenstock L, Abdulmawjood A, Reich F Abstract Ready-to-eat (RTE) sliced emulsion type sausages are sensitive to recontamination with Listeria (L.) monocytogenes during processing and packaging steps. Since Listeria spp. are able to grow on those products under cold storage conditions, taking steps to reduce the recontamination risk and implementing antibacterial hurdles contribute to consumer safety and increase the product quality. With this study data about the suitability of culture broth, cell-free supernatant (CFS) or concentrated bacteriocin preparations (CFSconc) of bacteriocin-producing lactic acid bacteria (LAB) obtained from fermented sausages from Germany as protective culture or antibacterial additive were provided. In different challenge tests, the potential of selected LAB or their preparations were investigated for their potential to reduce growth of L. monocytogenes and/or Brochothrix (B.) thermosphacta on sliced RTE emulsion type sausages under modified atmosphere or vacuum during refrigerated storage for a 21-day period. Applied LAB culture broth and CFS could not reduce the growth of L. monocytogenes or B. thermosphacta. On the other hand, samples treated with CFSconc obtained from Pediococcus spp. strains showed a significant ...
Source: Food Microbiology - Category: Food Science Authors: Tags: Food Microbiol Source Type: research