Cátedra de Química Orgánica-Productos Naturales, Facultad de Ciencias Exactas Físicas y Naturales, Universidad Nacional de Cordoba, IMBIV-CONICET-ICTA Av Velez Sarsfield 1611, Ciudad Universitaria, Cordoba, Argentina.
J Agric Food Chem. 2010 Jan 27;58(2):1115-20. doi: 10.1021/jf903203n.
The aim of this work was to compare the antiradical activity, total phenol content (TPC), and essential oil composition of Origanum vulgare spp. virens, Origanum x applii, Origanum x majoricum, and O. vulgare spp. vulgare cultivated in Argentina in different localities. The experiment was conducted in the research station of La Consulta (INTA-Mendoza), the research station of Santa Lucia (INTA-San Juan), and Agronomy Faculty of National University of La Pampa, from 2007 to 2008. The composition of the essential oils of oregano populations was independent of cultivation conditions. In total, 39 compounds were identified in essential oils of oregano from Argentina by means of GC-MS. Thymol and trans-sabinene hydrate were the most prominent compounds, followed by gamma-terpinene, terpinen-4-ol, and alpha-terpinene. O. vulgare vulgare is the only Origanum studied which is rich in gamma-terpinene. Among tested oregano, O. x majoricum showed the highest essential oil content, 3.9 mg g(-1) dry matter. The plant extract of O. x majoricum had greater total phenol content values, 19.36 mg/g dry weight, than the rest of oregano studied. To find relationships among TPC, free radical scavenging activity (FRSA), and climate variables, canonical correlations were calculated. The results obtained allow us to conclude that 70% of the TPC and FRSA variability can be explained by the climate variables (R(2) = 0.70; p = 8.3 x 10(-6)), the temperature being the most important climatic variable.
本工作旨在比较在阿根廷不同地区种植的马郁兰亚种、奥勒冈香薄荷、奥勒冈宽叶薰衣草和普通马郁兰的抗氧化活性、总酚含量（TPC）和精油成分。实验于 2007 年至 2008 年在拉孔斯塔（INTA-门多萨）研究站、圣卢西亚（INTA-圣胡安）研究站和国家拉潘帕农业大学农业系进行。精油的组成与种植条件无关。通过 GC-MS 总共鉴定了阿根廷马郁兰种群精油中的 39 种化合物。百里酚和反式水芹烯是最主要的化合物，其次是γ-萜品烯、萜品-4-醇和α-松油烯。O. vulgare vulgare 是唯一一种富含γ-萜品烯的奥勒冈属植物。在所测试的马郁兰中，O. x majoricum 精油含量最高，为 3.9mg g(-1)干物质。O. x majoricum 的植物提取物总酚含量值最高，为 19.36mg/g 干重，高于所研究的其他马郁兰。为了发现 TPC、自由基清除活性（FRSA）和气候变量之间的关系，我们计算了典范相关。所得结果表明，TPC 和 FRSA 变异的 70%可以用气候变量（R(2) = 0.70；p = 8.3 x 10(-6))来解释，其中温度是最重要的气候变量。
