Journal
JOURNAL OF FOOD SCIENCE
Volume 76, Issue 2, Pages M95-M100Publisher
WILEY
DOI: 10.1111/j.1750-3841.2010.02005.x
Keywords
bactericidal mixtures; carvacrol; eugenol; Listeria innocua; thymol
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Funding
- Natl. Council for Science and Technology of Mexico (CONACyT) [84859]
- CONACyT
- Univ. de las Americas Puebla
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The bactericidal effect of 3 natural agents (carvacrol, thymol, and eugenol) was evaluated as well as their binary and ternary mixtures on Listeria innocua inactivation in liquid model systems. Minimal bactericidal concentrations (MBC) of these agents were determined, and then binary and ternary mixtures were evaluated. Culture media were inoculated with L. innocua and incubated for 72 h at 35 degrees C. Turbidity of studied systems were determined every 24 h. The most effective individual antimicrobial agent was carvacrol, followed by thymol and then eugenol with MBCs of 150, 250, and 450 mg kg-1, respectively. It was observed that the most effective binary mixture was 75 mg kg-1 carvacrol and 62.5 mg kg-1 thymol. Furthermore, the ternary mixture carvacrol-thymol-eugenol in concentrations of 75, 31.25, and 56.25 mg kg-1, correspondingly, was the most effective for L. innocua inactivation. Several binary and ternary mixtures of these 3 natural antimicrobial agents worked adequately to inactivate L. innocua.
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