Abstract Phoenix dactylifera L., is a monocotyledonous tree belonging to the family Arecaceae or Palmaceae. In Iranian traditional medicines, the distilled water from the date palm spathe is used as tonic, sedative and calmative herbal medicine. In this study, for the first time, the essential oil content and composition of spathe from seven date palm varieties, Phoenix dactylifera L. (var. Mozafati) (male and female trees), Zahedi, Hallilehie, Piarom, and Keroot, Mordasangh, Medjool) growing in Bam, South of Iran, were determined by means of gas chromatography (GC) and gas chromatography/mass spectrometry (GC/MS) analyses. The results showed a significant difference between the weight of spathe per tree, essential oil percentage and essential oil yield of different varieties at P<0.01. Comparison of mean values showed the highest essential oil percentage (0.21 %, 0.20 % and 0.15 %) were obtained from Piarom, Zahedi and Mozafati varieties, respectively. Seventeen compounds were identified in the essential oils with 3,4-dimethoxy toluene (55.2-70.7 %), p-methyl anisol (4.5-28.5 %) and 2,6-dimethoxy toluene (9.0-19.9 %) as main components. These compounds have anti-paroxysm effects or may prevent the advance stage of Alzheimer. Cluster analysis showed that the Medjool variety was separated from other varieties. Imported varieties from other regions of Iran (Zahedi, Piarom, Hallilehie and Mordasangh) were set into one group and the inherent varieties (Keroot, Mozafati) were set into another group. The results showed that the varieties from one geographical region had a close or relatively the same essential oil compositions.

中文翻译：

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伊朗部分椰枣（Phoenix dactylifera L.）品种中佛焰苞的精油含量和成分

摘要 Phoenix dactylifera L.，是属于槟榔科或棕榈科的单子叶乔木。在伊朗的传统药物中，来自椰枣的蒸馏水被用作滋补、镇静和镇静的草药。在这项研究中，首次对来自 7 个枣椰树品种 Phoenix dactylifera L. (var. Mozafati)（雄树和雌树）、Zahedi、Halilehie、Piarom 和 Keroot、Mordasangh 的佛焰苞的精油含量和成分进行了分析。 Medjool) 生长在伊朗南部的巴姆，通过气相色谱 (GC) 和气相色谱/质谱 (GC/MS) 分析进行测定。结果表明，不同品种的每棵树的佛焰苞重量、精油百分比和精油产量之间存在显着差异，P<0.01。平均值的比较表明，最高的精油百分比（0.21%、0.20% 和 0.15%）分别来自 Piarom、Zahedi 和 Mozafati 品种。在精油中鉴定出 17 种化合物，主要成分为 3,4-二甲氧基甲苯 (55.2-70.7%)、对甲基苯甲醚 (4.5-28.5%) 和 2,6-二甲氧基甲苯 (9.0-19.9%)。这些化合物具有抗发作作用或可以预防阿尔茨海默病的晚期。聚类分析表明 Medjool 品种与其他品种分离。来自伊朗其他地区的进口品种（Zahedi、Piarom、Halilehie 和 Mordasangh）归入一组，固有品种（Keroot、Mozafati）归入另一组。结果表明，来自一个地理区域的品种具有接近或相对相同的精油成分。