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/OtherAbstract:
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.
Authors:
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:  -    
Affiliation:
1 Laboratory of Food Microbiology, Federal Institute of Education , Science, and Technology of Pernambuco, Vitória de Santo Antão, Brazil .
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