Document Detail

The Cytotoxic Effect of Essential Oils from Origanum vulgare L. and/or Rosmarinus officinalis L. on Aeromonas hydrophila.
MedLine Citation:
PMID:  22300224     Owner:  NLM     Status:  Publisher    
Abstract This study aimed to evaluate the antibacterial activities of the essential oils from Origanum vulgare L. (OV) and Rosmarinus officinalis L. (RO), both singly and in combination at sub-inhibitory concentrations (¼ MIC + ¼ MIC), against Aeromonas hydrophila and to investigate the possible mechanisms underlying these activities. Used singly (OV: 2.5 μL/mL; RO: 20 μL/mL) or in a mixture (OV: 0.625 μL/mL + RO: 5 μL/L), these essential oils led to a significant decrease (p<0.01) in bacterial viability after 24 h of exposure. A decrease in glucose consumption by A. hydrophila and release of cellular material were observed immediately after the addition of the essential oils, both singly and as a mixture, and continued for up to 6 h. Electron microscopy of cells exposed to the essential oils revealed severe changes in the plasma membrane, cytoplasmic appearance, and cell shape during the 6-h exposure period. OV and RO essential oils combined at sub-inhibitory concentrations could be rationally applied to inhibit the growth of A. hydrophila in food products, particularly minimally processed vegetables.
Geíza Alves de Azerêdo; Tânia Lúcia Montenegro Stamford; Regina Celia Bressan Queiroz de Figueiredo; Evandro Leite de Souza
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-2-2
Journal Detail:
Title:  Foodborne pathogens and disease     Volume:  -     ISSN:  1556-7125     ISO Abbreviation:  -     Publication Date:  2012 Feb 
Date Detail:
Created Date:  2012-2-3     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101120121     Medline TA:  Foodborne Pathog Dis     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
1 Laboratory of Food Microbiology, Federal Institute of Education , Science, and Technology of Pernambuco, Vitória de Santo Antão, Brazil .
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