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  • Title: Synergistic antibacterial activity of the essential oil of Cuminum cyminum L. seed and nisin in a food model.
    Author: Pajohi MR, Tajik H, Farshid AA, Hadian M.
    Journal: J Appl Microbiol; 2011 Apr; 110(4):943-51. PubMed ID: 21226797.
    Abstract:
    AIMS: To investigate effects of various concentrations of the essential oil of Cuminum cyminum L. seed alone and in combination with nisin on survival of vegetative forms of Bacillus cereus and Bacillus subtilis in a food model (commercial barley soup) and their ultrastructure. METHODS AND RESULTS: Gas chromatography-mass spectrometry analysis indicated that cumin aldehyde (29·02%) and α-terpinen-7-al (20·70%) constituted the highest amount of the essential oil. The lowest concentration of the essential oil significantly affected the growth of the bacteria at 8°C but not at 25°C. Synergistic effect of the essential oil in combination with the lowest concentration of nisin was observed on the bacteria at 8°C. Evaluation of the sensory properties showed that concentration of 0·15 μl ml−1 of the essential oil was the most acceptable. CONCLUSIONS:  The essential oil of C. cyminum L. seed showed the most bactericidal effects on B. cereus at 8°C. Ultrastructural studies of vegetative cells confirmed the synergistic destructive effects of the essential oil and nisin on membrane and cell wall of the bacteria.
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