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首页> 外文期刊>Journal of food protection >Rosemary and Tea Tree Essential Oils Exert Antibiofilm Activities In Vitro against Staphylococcus aureus and Escherichia coli
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Rosemary and Tea Tree Essential Oils Exert Antibiofilm Activities In Vitro against Staphylococcus aureus and Escherichia coli

机译：迷迭香和茶树精油在体外发挥抗葡萄球菌和大肠杆菌的体外活动

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摘要

The purpose of the present study was to determine the bioactive compounds in rosemary essential oil (REO) and tea tree essential oil (TEO) and to investigate their antibacterial and antibiofilm activities against Staphylococcus aureus and Escherichia coli in vitro. The MIC and MBC assays were performed to assess the antibacterial activity of these two EOs against S. aureus and E. coli with the broth microdilution method. A crystal violet assay was used to ascertain the effects of EOs on the biofilm formation of the test strains, and a tetrazolium bromide (MTT) assay was used to measure the level of inactivation of mature biofilms by EOs. Gas chromatography-mass spectrometry revealed 15 compounds in REO and 27 compounds in TEO, representing 97.78 and 98.13% of the total EO, respectively. Eucalyptol and a-pinene were found in high concentrations in REO, and the two major compounds in TEO were 4-terpineol and terpinolene. The MICs of REO for the two S. aureus and E. coli test strains were both 0.5 mg/mL, and the MICs of TEO for the two strains were both 0.25 mg/mL. Therefore, these EOs can significantly inhibit the formation of biofilms and induced morphological biofilm changes, as verified by scanning electron microscopy. Both EOs had destructive effects on the mature biofilm of the two test strains. TEO was more inhibitory than REO for biofilm formation by the two test strains.
机译：本研究的目的是测定迷迭香精油（REO）和茶树精油（TEO）中的生物活性化合物，并在体外研究对葡萄球菌和大肠杆菌的抗菌剂和抗抗菌活动。进行MIC和MBC测定以评估这两种EOS对抗金黄色葡萄球菌和大肠杆菌的抗菌活性，用肉汤微脱离方法。使用晶体紫度测定来确定EOS对测试菌株的生物膜形成的影响，并使用四唑溴（MTT）测定法测量EOS的成熟生物膜的灭活水平。气相色谱 - 质谱分别在TEO中显示了REO和27种化合物中的15种化合物，分别为总EO的97.78和98.13％。在REO的高浓度下发现桉树和A-Pinene，TEO中的两个主要化合物是4萜烯醇和萜品醇。两种金黄色葡萄球菌和大肠杆菌试管的麦克风均为0.5mg / ml，两种菌株的TEO麦克风均为0.25mg / ml。因此，这些EO可以显着抑制生物膜的形成并诱导形态学生物膜变化，如通过扫描电子显微镜验证。两种EOS对两种测试菌株的成熟生物膜具有破坏性影响。 TEO比两种测试菌株的生物膜形成更多的抑制作用。

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  • 来源
    《Journal of food protection》 |2020年第7期|1261-1267|共7页
  • 作者

    TING LIU; JINGFAN WANG; XIAOMAN GONG; XIAOXIA WU; LIU LIU; FUMIN CHI;

  • 作者单位

    College of Food Engineering and Nutrition Science Shaanxi Normal University Xi'an Shaanxi 710119 People's Republic of China;

    College of Food Engineering and Nutrition Science Shaanxi Normal University Xi'an Shaanxi 710119 People's Republic of China;

    College of Food Engineering and Nutrition Science Shaanxi Normal University Xi'an Shaanxi 710119 People's Republic of China;

    College of Food Engineering and Nutrition Science Shaanxi Normal University Xi'an Shaanxi 710119 People's Republic of China;

    College of Food Engineering and Nutrition Science Shaanxi Normal University Xi'an Shaanxi 710119 People's Republic of China;

    Food Science College Tibet Agriculture and Animal Husbandry University Nyingchi Tibet 860000 People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Bacterial biofilm; Escherichia coli; Essential oil; Staphylococcus aureus;

    机译：细菌生物膜;大肠杆菌;香精油;金黄色葡萄球菌;

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