Atividade larvicida do óleo essencial de Alpinia zerumbetfrente as larvas do mosquito Aedes aegypti

Abstract

<jats:p>The present study evaluated the toxicity and larvicidal activity of essential oil (EO) of Alpinia zerumbet leaves. The (EO) was extracted by hydrodistillation at 100°C for 3h and the physicochemical parameters were determined using the Brazilian Pharmacopoeia. Toxicity was performed through the bioassay of Artemia salina Leach, then larvicidal activity was evaluated against Aedes aegypti. LC50 was calculated for toxicity and larvicidal activity against mosquito larvae based on the Reed-Muench method. The EO was classified for toxicity and the Dolabela criterion was used. In the toxicity bioassay, LC50 321.15 mg L-1 was classified as nontoxic. Larvicidal activity against Aedes aegypti showed 50.70 mg L-1 according to EO. Total phenolics resulted in 513.574 mg EAT g-1. The EO presented satisfactory results against the microorganisms tested, revealing its efficiency in combating and controlling pathogenic microorganisms and larvicides.</jats:p>

Inga laurina crude extract to control Aedes aegypti

“…Due to evolution matters, plants naturally produce compounds with insecticide action in response to attack of herbivores, phytopathogens and mollusks (Okwute, 2012) and, therefore, they become excellent contributors to the research of natural products that are efficient to control adult mosquitos and to exterminate A. aegypti larvae (Martins et al, 2020;Santos Júnior et al, 2020). The broad biodiversity of the Brazilian flora with approximately 46,000 recorded species makes this natural resource a source of new biomolecules (Braz-Filho, 2010).…”

Análise prospectiva científica e tecnológica sobre Myracrodruon urundeuva (aroeira do sertão) e a resistência bacteriana

“…Science Direct) dos artigos relativos a espécie M. urundeuva são voltados para atividade antibacteriana, no entanto, isso indica a importância dessa espécie e suas diversas atividades farmacológicas relatadas na literatura, como: antiparasitárias, analgésicas, anti-inflamatórias, antioxidante, antimineralizadora, antifúngica, ovicida, gastroprotetora, cicatrizantes entre outras. Nestes achados, foi possível verificar que parte do potencial antibacteriano dessa planta é devido a presença de lectinas que apresentou atividade antibacteriana contra isolados clínicos não resistentes e resistentes de S. aureus e efeitos sinérgicos com antibióticos na redução do crescimento e formação de biofilme(Júnior et al, 2020). O óleo essencial de suas folhas também foi avaliado e segundo Araújo et al, (2017) apresentou teores de α-pineno, trans-cariofileno, limoneno e β-pineno e isso contribui para sua atividade antibacteriana frente a S. aureus,Staphylococcus epidermidis, Escherichia coli, Pseudomonas aeruginosa e Salmonella enteritidis.…”