期刊
JOURNAL OF MEDICAL MICROBIOLOGY
卷 51, 期 7, 页码 567-574出版社
SOC GENERAL MICROBIOLOGY
DOI: 10.1099/0022-1317-51-7-567
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Successful infection by Listeria monocytogenes is dependent upon a range of bacterial extracellular proteins including a cytolysin termed listeriolysin 0 and phosphatidylcholine-specific phospholipase C. Five plant essential oils - bay, clove, cinnamon, nutmeg and thyme - significantly reduced the production of listeriolysin 0 by L. monocytogenes. The greatest change was observed after culture with oil of thyme, which reduced haemolysis to 52.1 haemolytic units (HU)/ml compared with 99.8 HU/ml observed with the control. Oil of clove was the only oil that also significantly reduced phosphatidylcholine-specific phospholipase C activity. These changes were observed despite the oils causing no change to the final bacterial concentration or total extracellular protein concentration.
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