Bactericidal activities of essential oils of basil and sage against a range of bacteria and the effect of these essential oils on Vibrio parahaemolyticus.
Basil and sage essential oils were examined for bactericidal activity against a range of Gram-positive and Gram-negative bacteria by viable count determinations. Generally, Gram-positive bacteria showed higher resistance to basil and sage essential oils than Gram-negative bacteria. Vibrio species showed a high sensitivity to both essential oils. Stationary growth phase cells of selected bacteria showed higher resistance to these essential oils than exponential growth phase cells. Basil-resistant (b21) and sage-resistant (s20) strains of Vibrio parahaemolyticus were isolated. Both strains showed higher resistance to heat and H2O2 than parent strain. Conversely, heat-adapted V. parahaemolyticus also showed a higher resistance to these essential oils than nonadapted cells.
Koga
T
T
Department of Food Microbiology, Tokushima University School of Medicine, Japan.
Hirota
N
N
Takumi
K
K
D015169:Colony Count, Microbial; D004352:Drug Resistance, Microbial; D006090:Gram-Negative Bacteria / Q000187:drug effects*; D006094:Gram-Positive Bacteria / Q000187:drug effects*; D006358:Hot Temperature; D006861:Hydrogen Peroxide / Q000494:pharmacology; D019686:Lamiaceae / Q000737:chemistry*; D018649:Ocimum basilicum / Q000737:chemistry*; D009822:Oils, Volatile / Q000302:isolation & purification / Q000494:pharmacology*; D013997:Time Factors; D014736:Vibrio parahaemolyticus / Q000187:drug effects* / Q000254:growth & development
D009822:Oils, Volatile; D006861:Hydrogen Peroxide