Larvicidal activity of Brunfelsia uniflora extracts on Aedes aegypti larvae.
Nat Prod Res
; 36(4): 1031-1037, 2022 Feb.
Article
em En
| MEDLINE
| ID: mdl-33161755
The aim of this study was to evaluate the chemical composition and the larvicidal activity of Brunfelsia uniflora leaf and flower extracts against Aedes aegypti larvae. Twenty-four compounds were found in the leaf extract, and the major compounds were phytol (23.1%), 9,12,15-octadecatrienoic acid, ethyl ester (21.3%), and hexadecanoic acid, ethyl ester (12.8%). In the flower extract, twenty-four compounds were also identified and the major compounds were α-amyrin (35.7%), ß-amyrin (16.4%), and (EE)-geranyl linalool (9.6%) by gas chromatography coupled to mass spectrometry. The larvicidal activity was evaluated by larval immersion test. The lethal concentrations (LC) obtained from leaf extract were LC50 = 4.89 and LC99.9 = 11.14 mg/mL and from flower extract were LC50 = 3.82 and LC99.9 = 11.03 mg/mL, and the positive control presented LC50 = 0.40 and LC99.9 = 1.14 mg/mL. Thus, B. uniflora extracts are promising alternatives to control A. aegypti larvae.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Aedes
/
Inseticidas
Limite:
Animals
Idioma:
En
Revista:
Nat Prod Res
Ano de publicação:
2022
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Reino Unido