Pubblicazione scientifica

Prolonged mosquitocidal activity of Siparuna guianensis essential oil encapsulated in chitosan nanoparticles

FILONE TECNOLOGICO	TEMA
trasformazione e commercializzazione

RIASSUNTO

Background

The use of synthetic insecticides is one of the most common strategies for controlling disease vectors such as mosquitos. However, their overuse can result in serious risks to human health, to the environment, as well as to the selection of insecticidal resistant insect strains. The development of efficient and eco-friendly insect control is urgent, and essential oils have been presented as potential alternatives to synthetic insecticides. Moreover, nanoencapsulation techniques can enhance their efficiency by protecting from degradation and providing a controlled release rate.

Results

We assessed the potential of chitosan nanoparticles in encapsulating Siparuna guianensis essential oil, and maintaining its efficiency and prolonging its activity for the control of Aedes aegypti larvae. The encapsulation was characterized by scanning electron microscopy (SEM), Fourier-transform infrared spectroscopy (FTIR), and thermogravimetric analysis (TGA), with an encapsulation efficiency ranging from 84.8% to 88.0%. Toxicity studies have demonstrated efficacy against mosquito larvae over 50% for 19 days with 100% mortality during the first week. This persistent action is presumably due to the enhanced contact and slow and maintained release conferred by chitosan nanoparticles. Furthermore, the exposure of aquatic non-target organisms (e.g. embryos and small adult fishes) revealed adequate selectivity of these nanoparticles.

Conclusions

The encapsulation of S. guianensis essential oil in chitosan nanoparticles showed promising potential as a larvicide control alternative and should be considered within strategies for fighting Ae. aegypti.

DATA

Data di pubblicazione: 09/08/2019

AUTORI

P FERREIRA TACIANO
HADDI KHALID
F T CORREA ROBERTO
ZAPATA VIVIANA L B
PIAU TATHYANA B
SOUZA LUIS F N
SANTOS SWEL-MARKS G
OLIVEIRA EUGENIO E
JUMBO LUIS O V
RIBEIRO BERGMANN M
GRISOLIA CESAR K
FIDELIS RODRIGO R
MAIA ANA M S
S AGUIAR RAIMUNDO W

ENTE DI AFFERENZA

POSTGRADUATE PROGRAM LEGAL AMAZON BIODIVERSITY & BIOTECHNOLOGY NETWORK REDE BIONORTE UNIV FEDERAL DO TOCANTINS PALMAS TOCANTINS BRAZIL
DEPARTAMENTO DE QUIM AMBIENTAL UNIV FEDERAL DO TOCANTINS GURUPI TOCANTINS BRAZIL
DEPARTAMENTO DE ENTOMOLOGIA UNIV FEDERAL DE VICOSA VICOSA MINAS GERAIS BRAZIL
DEPARTAMENTO DE BIOLOGIA CELULAR UNIV BRASILIA BRASILIA DISTRITO FEDERAL BRAZIL
DEPARTAMENTO DE GENETICA E MORFOLOGIA INST CIENCIAS BIOLOGICAS UNIV BRASILIA BRASILIA DISTRITO FEDERAL BRAZIL
DEPARTAMENTO DE ENGENHARIA DE BIOPROCESSOS E BIOTECNOLOGIA UNIV FEDERAL DO TOCANTINS GURUPI TOCANTINS BRAZIL
DEPARTAMENTO DE PROD VEGETAL UNIV FEDERAL DO TOCANTINS GURUPI TOCANTINS BRAZIL
FACULTY OF SCIENCE MAHIDOL UNIV THAILAND

RIVISTA

PLoS Neglected Tropical Diseases, 13(8), e0007624

IMPACT FACTOR

4,400

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