Department of Animal Production and Food Science, Veterinary Faculty, University of Zaragoza, Miguel Servet 177, 50013 Zaragoza, Spain.
J Sci Food Agric. 2011 Nov;91(14):2643-51. doi: 10.1002/jsfa.4505. Epub 2011 Jul 18.
The present study reports on the antimicrobial activity and chemical composition of the essential oils (EOs) of Thymus algeriensis, Eucalyptus globulus and Rosmarinus officinalis from Morocco.
The composition of these species was analysed by GC-MS, and 65 components were identified. Eucalyptus globulus EO showed a great similarity with EOs from other regions, with 1,8-cineole (79.85%) the major component. Also rich in this constituent was Rosmarinus officinalis (43.99%). However, the chemical profile of Thymus algeriensis was rather different, and for the first time such a high content of borneol (23.48%) has been described in this EO. The antimicrobial activity of these species has also been studied against seven pathogenic and spoiling bacteria of significant importance. According to the results, Thymus algeriensis showed the best bacteriostatic and bactericidal effect, followed by Eucalyptus globulus and Rosmarinus officinalis.
As far as we know this is the first time that minimum inhibitory and bactericidal concentration values have been reported for Eucalyptus globulus EO. Our data support the possible use of this EO as well as Thymus algeriensis EO, as potential natural agents in preservatives for food and pharmaceutical products.
本研究报告了摩洛哥的阿尔及利亚百里香、蓝桉和迷迭香精油的抗菌活性和化学成分。
通过 GC-MS 对这些物种的组成进行了分析，共鉴定出 65 种成分。蓝桉精油与其他地区的精油非常相似，主要成分是 1,8-桉叶素（79.85%）。迷迭香精油也富含这种成分（43.99%）。然而，阿尔及利亚百里香的化学成分则大不相同，这是首次在这种精油中描述如此高含量的龙脑（23.48%）。这些物种的抗菌活性也针对七种具有重要意义的致病性和腐败性细菌进行了研究。结果表明，阿尔及利亚百里香表现出最好的抑菌和杀菌效果，其次是蓝桉和迷迭香精油。
据我们所知，这是首次报道蓝桉精油的最小抑菌和杀菌浓度值。我们的数据支持将这种蓝桉精油和阿尔及利亚百里香精油作为食品和医药产品防腐剂的天然潜在制剂。
