Document Detail

Antibacterial protection by enterocin AS-48 in sport and energy drinks with less acidic pH values.
MedLine Citation:
PMID:  19435243     Owner:  NLM     Status:  MEDLINE    
The low pH and acid content found in sports and energy drinks are a matter of concern in dental health. Raising the pH may solve this problem, but at the same time increase the risks of spoilage or presence of pathogenic bacteria. In the present study, commercial energy drinks were adjusted to pH 5.0 and challenged with Listeria monocytogenes (drinks A to F), Staphylococcus aureus, Bacillus cereus, and Bacillus licheniformis (drink A) during storage at 37 degrees C. L. monocytogenes was able to grow in drink A and survived in drinks D and F for at least 2 days. Addition of enterocin AS-48 (1 microg/ml final concentration) rapidly inactivated L. monocytogenes in all drinks tested. S. aureus and B. cereus also survived quite well in drink A, and were completely inactivated by 12.5 microg/ml enterocin AS-48 after 2 days of storage or by 25 microg/ml bacteriocin after 1 day. B. licheniformis was able to multiply in drink A, but it was completely inactivated by 5 microg/ml enterocin AS-48 after 2 days of storage or by 12.5 microg/ml bacteriocin after 1 day. Results from the present study suggest that enterocin AS-48 could be used as a natural preservative against these target bacteria in less acidic sport and energy drinks.
Pilar Martinez Viedma; Hikmate Abriouel; Nabil Ben Omar; Rosario Lucas López; Eva Valdivia; Antonio Gálvez
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of food protection     Volume:  72     ISSN:  0362-028X     ISO Abbreviation:  J. Food Prot.     Publication Date:  2009 Apr 
Date Detail:
Created Date:  2009-05-13     Completed Date:  2009-07-14     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7703944     Medline TA:  J Food Prot     Country:  United States    
Other Details:
Languages:  eng     Pagination:  881-4     Citation Subset:  IM    
Area de Microbiología, Departamento de Ciencias de la Salud, Facultad de Ciencias Experimentales, Universidad de Jaén, Jaén, Spain.
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MeSH Terms
Bacteriocins / pharmacology*
Beverages / analysis*,  microbiology*
Food Microbiology
Food Preservation / methods
Food Preservatives / pharmacology*
Food Technology
Hydrogen-Ion Concentration
Reg. No./Substance:
0/Bacteriocins; 0/Food Preservatives; 0/enterocin AS-48, Enterococcus faecalis

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