Faculty of Biology, College of Education, Vinh University, 182 Le Duan, Vinh City, Nghệ An Province 4300, Vietnam.
Institute of Chemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam.
Z Naturforsch C J Biosci. 2023 May 11;78(9-10):337-344. doi: 10.1515/znc-2022-0244. Print 2023 Sep 26.
The current study describes the chemical identification, antimicrobial, and mosquito larvicidal activities of essential oils from and , growing in Vietnam. Essential oils were extracted from the leaves and rhizomes, and characterized by the GC-FID/MS (gas chromatography-flame ionization detection/mass spectrometry) analysis. Monoterpenes (33.1-89.2 %) were the main chemical class found in these oils. -Pinene (30.8 %) and -pinene (23.8 %) were two major compounds in leaf oil. leaf and rhizome essential oils were dominated by 1,8-cineole (47.9-62.0 %) and limonene (10.3-16.2 %). With the same MIC (minimum inhibitory concentration) value of 25 μg/mL, leaf and rhizome essential oils strongly inhibited the growth of Gram-positive bacteria ATCC 29213 and ATCC 6501, respectively. For 24 and 48-h treatments, leaf essential oil strongly controlled the growth of mosquito with the respective LC values of 7.67 and 6.73 μg/mL, and the respective LC values of 13.37 and 10.83 μg/mL. In the same manner, rhizome essential oil also showed strong mosquito larvicidal activity against with the LC values of 12.37 and 12.00 μg/mL, and the LC values of 20.56 and 18.58 μg/mL, respectively. essential essential oils containing a high amount of 1,8-cineole are generally better than essential essential oils in both two biological assays.
本研究描述了产自越南的 和 的叶和根茎的精油的化学鉴定、抗菌和杀蚊幼虫活性。精油从叶子和根茎中提取，并通过 GC-FID/MS（气相色谱-火焰离子化检测/质谱）分析进行了表征。单萜（33.1-89.2%）是这些油中的主要化学类。-蒎烯（30.8%）和-蒎烯（23.8%）是 叶油中的两种主要化合物。 叶和根茎精油以 1,8-桉叶油素（47.9-62.0%）和柠檬烯（10.3-16.2%）为主。叶和根茎精油的 MIC（最小抑菌浓度）值相同，均为 25μg/mL，对革兰氏阳性菌 ATCC 29213 和 ATCC 6501 的生长有强烈抑制作用。在 24 和 48 小时处理中，叶精油对蚊子的生长有强烈的控制作用，LC 值分别为 7.67 和 6.73μg/mL，LC 值分别为 13.37 和 10.83μg/mL。同样，根茎精油对 也表现出强烈的杀蚊幼虫活性，LC 值分别为 12.37 和 12.00μg/mL，LC 值分别为 20.56 和 18.58μg/mL。含有高比例 1,8-桉叶油素的 精油在这两种生物测定中通常优于 精油。
