Larvicidal Activity of Essential Oil, Hydrolate, and Aqueous Extract from Leaves of Myrciaria floribunda Against Aedes Aegypti.
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Santos Eduarda Florencio, Anselmo Wevertton Marllon, de Lemos Eurico Eduardo Pinto, de Aguiar Júlio César Ribeiro de Oliveira Farias, da Silva Ana Carla, Dos Santos Fábio Henrique Galdino, Arruda Camila Caroline Lopes, Aguiar João Vitor Castro, de Andrade José Jorge Almeida, da Rocha Suyana Karolyne Lino, Araújo Liderlânio de Almeida, Pereira Júnior Paulo Gomes, Albuquerque Caroline Francisca de Oliveira, Sousa Edymilaís da Silva, Dos Santos Gerlan Lino, da Conceição Tamires Zuleide, de Andrade Leonardo Arcanjo, Soares Luiz Alberto Lira, Ferreira Magda Rhayanny Assunção, Navarro Daniela Maria do Amaral Ferraz
Аннотация
The mosquito Aedes aegypti is the vector responsible for the transmission of important arboviruses such as dengue fever, Chikungunya, Zika virus, and yellow fever. These diseases affect millions of people and exert impacts on healthcare systems throughout the world. Given the increasing resistance to synthetic insecticides, essential oils from plants constitute an ecologically viable alternative for the control of this vector. The aim of the present study was to investigate the larvicidal activity of the essential oil (EO), aqueous extract, rutin, and hydrolate from the leaves of Myrciaria floribunda against Aedes aegypti larvae in the initial L4 stage. The yield of EO was 0.47%. Thirty-seven chemical constituents were identified and quantified using chromatographic methods. The major constituents were (E)-caryophyllene (27.35%), 1,8-cineole (11.25%), β-selinene (4.92%), and α-muurolene (4.92%). In the larvicidal tests, the lethal concentration (LC50) was 201.73 ppm for the essential oil, 15.85% for the aqueous extract, and 22.46 ppm for rutin. The hydrolate had no larvicidal activity. The compounds that exhibited larvicidal activity against Aedes aegypti constitute a promising option for the development of natural formulations to diminish the propagation of this vector.