Huong Le T, Huong Trinh T, Huong Nguyen T T, Hung Nguyen H, Dat Pham T T, Luong Ngo X, Ogunwande Isiaka A
School of Natural Science Education, Vinh University.
Graduate University of Science and Technology, Vietnam Academy of Science and Technology.
J Oleo Sci. 2020;69(2):153-160. doi: 10.5650/jos.ess19175.
The chemical composition and larvicidal activity of essential oils from the leaves and rhizomes of Zingiber collinsii Mood & Theilade (Zingiberaceae) were reported. The main compounds in the leaf oil were α-pinene (25.6%), β-caryophyllene (16.8%), β-pinene (16.1%) and bicyclogermacrene (6.9%) while the rhizome oil consist mainly of camphene (22.5%), β-pinene (16.3%), α-pinene (9.0%) and humulene oxide II (9.0%). The rhizome oil demonstrated larvicidal effects towards fourth instant larvae of mosquito vectors. The highest mortality (100%) was observed at 24 h exposure against Aedes albopictus (concentration 100 μg/mL) and 48 h (concentration of 50 and 100 μg/mL), while the highest mortality (100%) was observed for Culex quinquefasciatus at 24 h and 48 h at concentration of 100 μg/mL. The 24 h mosquito larvicidal activity of the rhizome oil against Ae. albopictus were LC = 25.51 μg/mL; LC = 40.22 μg/mL and towards Cx. quinquefasciatus with LC = 50.11 μg/mL and LC = 71.53 μg/mL). However, the 48 h larvicidal activity were LC = 20.03 μg/mL and LC = 24.51 μg/mL (Ae. albopictus), as well as LC = 36.18 μg/mL and LC = 55.11 μg/mL (Cx. quinquefasciatus). On the other hand, no appreciable mortality and larvicidal activity was observed for the leaf oil. The larvicidal activity of the essential oils of Z. collinsii was being reported for the first time.
报道了科林斯姜（Zingiber collinsii Mood & Theilade，姜科）叶片和根茎精油的化学成分及杀幼虫活性。叶油中的主要化合物为α-蒎烯（25.6%）、β-石竹烯（16.8%）、β-蒎烯（16.1%）和双环吉玛烯（6.9%），而根茎油主要由莰烯（22.5%）、β-蒎烯（16.3%）、α-蒎烯（9.0%）和氧化律草烯II（9.0%）组成。根茎油对蚊媒四龄幼虫具有杀幼虫作用。在24小时暴露时，对白纹伊蚊（浓度100μg/mL）和48小时（浓度50和100μg/mL）观察到最高死亡率（100%），而对致倦库蚊在24小时和48小时浓度为100μg/mL时观察到最高死亡率（100%）。根茎油对白纹伊蚊的24小时杀蚊幼虫活性的LC₅₀ = 25.51μg/mL；LC₉₀ = 40.22μg/mL，对致倦库蚊的LC₅₀ = 50.11μg/mL和LC₉₀ = 71.53μg/mL）。然而，48小时的杀幼虫活性为LC₅₀ = 20.03μg/mL和LC₉₀ = 24.51μg/mL（白纹伊蚊），以及LC₅₀ = 36.18μg/mL和LC₉₀ = 55.11μg/mL（致倦库蚊）。另一方面，叶油未观察到明显的死亡率和杀幼虫活性。科林斯姜精油的杀幼虫活性首次被报道。
