Universidade Federal do Paraná, Programa de Pós-Graduação em Ciências Farmacêuticas, Curitiba, PR, Brasil.
Universidade Estadual do Centro Oeste, Departamento de Farmácia, Guarapuava, PR, Brasil.
Rev Soc Bras Med Trop. 2021 Feb 26;54:e05762020. doi: 10.1590/0037-8682-0576-2020. eCollection 2021.
Aedes aegypti is the main vector of dengue and yellow fever. Recently, the use of plant-sourced larvicides has gained momentum.
The hydroethanolic extracts and fractions ofOcotea nutansleaves and stems were bioassayed to determine the larvicidal efficacy of these samples.
S-HEX (hexane fraction from the crude stem extract) demonstrated high potential for controlling third-stage larvae, with an LC50 of 14.14 µg.mL-1 (concentration required to inhibit 50% of the treated larvae).
Extracts from O. nutans were effective against third-stage larvae ofA. aegyptiafter 24 h of exposure.
埃及伊蚊是登革热和黄热病的主要传播媒介。最近，植物源幼虫抑制剂的使用得到了推动。
对心叶樟的水-乙醇提取物及其馏分进行了生物测定，以确定这些样品的杀幼虫效果。
S-HEX（粗茎提取物的正己烷馏分）对控制第三龄幼虫具有很高的潜力，LC50 为 14.14 µg.mL-1（抑制 50%处理幼虫所需的浓度）。
心叶樟提取物在暴露 24 小时后对埃及伊蚊的第三龄幼虫有效。
