Abstract

Dancy tangerine trees have been imported from abroad and successfully cultivated in some newly reclaimed areas in Egypt. Reclamation areas (arid desert areas that are converted into areas suitable for agriculture) in Egypt are located in different geographical regions that differ from each other in weather conditions and soil characteristics, which may cause changes in essential oils, and thus a diversity of their biological activity. So, the changes in Dancy tangerine essential oils and their components were investigated under the conditions of two reclaimed desert areas (west and south) of Egypt to find out the extent of opportunities for expanding its cultivation in new reclamation regions as a natural source of essential oils, because if it is successful in those areas, the production of essential oils from plants will increase. The essential oils of leaves, flowers, and peels were separated by hydrodistillation and analyzed by GC/MS. The statistical analysis was carried out using ANOVA-1. Different variations were found in leaf, flower, and peel essential oils under both locations. Linalool was the main component in leaf essential oil but the major component in flower and peel essential oils was limonene. Oxygenated monoterpenes was the major chemical group in leaf essential oil, while monoterpene hydrocarbons were the basic group in flower and peel essential oils. Leaf, flower, and peel essential oil contents (% or ml/kg), major components, and major groups were higher in western samples than those from southern samples. Oxygenated diterpenes group appeared in leaf essential oil and was completely absent in both flowers and peels essential oils. This research paper determined that occupation of cultivation regions in reclaimed zones leads to changes in Dancy tangerine essential oil and its components. Also, this attempt serves as a hint to know adequate cultivation region for essential oil production according to the ingredients of benefit.

摘要

丹西橘树从国外进口，并在埃及一些新开垦的地区成功种植。埃及的开垦区（干旱的沙漠地区转变为适合农业的地区）位于不同的地理区域，气候条件和土壤特性各不相同，这可能会导致精油的变化，从而导致其生物多样性的变化。活动。因此，在埃及两个开垦荒漠地区（西部和南部）的条件下调查了丹西柑橘精油及其成分的变化，以找出在新开垦地区扩大种植作为必需品的天然来源的机会程度。油，因为如果在这些领域取得成功，植物精油的产量将会增加。通过水蒸馏分离叶、花和果皮的精油，并通过 GC/MS 进行分析。使用ANOVA-1进行统计分析。在这两个位置的叶、花和果皮精油中发现了不同的变化。芳樟醇是叶精油的主要成分，而花和果皮精油的主要成分是柠檬烯。含氧单萜是叶精油中的主要化学基团，而单萜烃是花和果皮精油中的基本基团。西方样品的叶、花和果皮精油含量（%或ml/kg）、主要成分和主要组别高于南方样品。含氧二萜基团出现在叶精油中，而在花和果皮精油中完全不存在。本研究论文确定，对开垦区种植区的占用导致丹西橘精油及其成分的变化。此外，这种尝试也暗示了根据有益成分了解适合精油生产的种植区域。