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首页> 外文期刊>Natural product communications >Seasonal variation and bioactivity in the leaf oil of Liriodendron tulipifera growing in Huntsville, Alabama
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Seasonal variation and bioactivity in the leaf oil of Liriodendron tulipifera growing in Huntsville, Alabama

机译：在阿拉巴马州汉斯维尔生长的鹅掌Li叶片油中的季节性变化和生物活性

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摘要

The seasonal variation in the chemical composition of the leaf essential oil of Liriodendron tulipifera has been analyzed by GC-MS. Two individual trees were sampled five times during the course of the growing season. Twenty components were identified in the leaf oils, which were dominated by sesquiterpene hydrocarbons, principally germacrene D and β-elemene, in the early part of the season (42-44% and 18-23%, respectively,) but monoterpene hydrocarbons, largely (Z)-β-ocimene, dominated the later season leaf oils (40-60%). The leaf oils exhibited in-vitro antibacterial activity against Bacillus cereus and Staphylococcus aureus as well as cytotoxic activity on MDA-MB-231 and Hs 578T human breast tumor cells.
机译：通过GC-MS分析了鹅掌Li叶片精油化学成分的季节性变化。在生长季节过程中，对五棵树采样了两棵树。在季节早期，叶油中鉴定出二十种成分，其中以倍半萜碳氢化合物为主，主要是丁三烯D和β-榄香烯（分别为42-44％和18-23％），而单萜碳氢化合物大部分（Z）-β-ocimene，在后期叶油中占主导地位（40-60％）。叶油对蜡样芽孢杆菌和金黄色葡萄球菌具有体外抗菌活性，对MDA-MB-231和Hs 578T人乳腺肿瘤细胞具有细胞毒活性。

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