Journal
EUROPEAN FOOD RESEARCH AND TECHNOLOGY
Volume 218, Issue 2, Pages 188-193Publisher
SPRINGER
DOI: 10.1007/s00217-003-0806-0
Keywords
thymol; cymene; natural antimicrobial; Hurdle technology; food substrates; Bacillus cereus
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The antibacterial action of thymol and cymene on two Bacillus cereus strains (INRA-AVTZ415 and INRA-AVZ421) was studied. Thymol and cymene alone showed higher antibacterial effect on the growth of B. cereus in BHI at 30degreesC, both in lag and in exponential growth phases, with increasing added concentrations. However, the two strains tested showed different sensitivity to these natural compounds. When thymol and cymene were applied simultaneously, it resulted in a greater antibacterial effect than when the compounds were applied separately. The synergistic behaviour of both compounds was also shown for lag phase B. cereus INRA-AVZ421 cells in food substrates (carrot juice, chicken soup and pumpkin cream) at 30degreesC, though a clear food-related effect was observed. This study indicates the potential use of thymol and cymene applied simultaneously for preservation of minimally processed foods.
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