Document Detail

Antimicrobial properties of three lactic acid bacterial cultures and their cell free supernatants against Listeria monocytogenes.
MedLine Citation:
PMID:  23030442     Owner:  NLM     Status:  In-Data-Review    
Control of Listeria monocytogenes in ready-to-eat (RTE) food products is a significant challenge and improved means for control are needed. In this study, the anti-listerial effects of three lactic acid bacteria (LAB) were investigated. Spot-on-lawn assays demonstrated the largest zones of inhibition against L. monocytogenes were produced by the Pediococcus acidilactici strain, with zone diameters ranging from 13 to 18 mm. Minimum inhibitory concentration (MIC) experiments using cell free supernatant (CFS) from the LAB revealed that while two of the strains were effective at inhibiting L. monocytogenes growth only up to a 1:4 dilution, P. acidilactici was able to inhibit growth up to a 1:256 dilution. Survival assays performed at 7°C determined that the P. acidilactici strain was capable of producing a 4.5 log reduction in L. monocytogenes counts and maintaining the reduction for 21 days. The effectiveness of P. acidilactici was reduced under log phase growth, autoclaving for longer than 15 min (121°C and 15 psi), and treatment with proteinase K (25 mg/mL).
Sara R Milillo; Robert S Story; Dolar Pak; Corliss A O'Bryan; Philip G Crandall; Steven C Ricke
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes     Volume:  48     ISSN:  1532-4109     ISO Abbreviation:  J Environ Sci Health B     Publication Date:  2013  
Date Detail:
Created Date:  2012-10-03     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7607167     Medline TA:  J Environ Sci Health B     Country:  England    
Other Details:
Languages:  eng     Pagination:  63-8     Citation Subset:  IM    
a Center for Food Safety, University of Arkansas , Fayetteville , Arkansas , USA.
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