1. Application of polymeric nanoparticles for controlled release of ethanolic extract of guapeva leaves (Pouteria gardneriana Radlk) against Riphicephalus (Boophilus) microplus through in vitro studies
- Author
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Adilson Ben da Costa, Rômulo Davi Albuquerque Andrade, Ana Carolina Ribeiro Aguiar, Fabiano Guimarães Silva, Andréa Rodrigues Chaves, Priscila Fernanda Pereira Barbosa, and Pablo Peres de Mendonça
- Subjects
Chromatography ,Ethanol ,Acaricide ,010401 analytical chemistry ,Chitosan nanoparticles ,Extracts, nanoparticle, controlled release, tick ,Pouteria gardneriana ,Polymeric nanoparticles ,01 natural sciences ,Applied Microbiology and Biotechnology ,Controlled release ,In vitro ,0104 chemical sciences ,Chitosan ,010404 medicinal & biomolecular chemistry ,chemistry.chemical_compound ,chemistry ,Botany ,Genetics ,Agronomy and Crop Science ,Molecular Biology ,Biotechnology - Abstract
The study was designed to evaluate the ethanolic extract acaricide action from Pouteria gardneriana Radlk specie adsorbed in chitosan nanoparticles for controlled release against Riphicephalus ( Boophilus ) microplus . Leaves of P. gardneriana Radlk were collected, air-dried, ground and extracted with ethanol. Chitosan nanospheres were obtained by the phase inversion method. Conductometric titration, UV-Vis and FTIR analysis were conducted with the materials to evaluate the chitosan anchoring ability. In vitro test was performed using engorged females for each treatment, which consisted of the control, raw extract and three treatments diluted, with increasing concentrations of 0.2, 0.4 and 1%. The most effectiveness extract was for 0.4% concentration by observing reduction in the eggs mass compared to control group. The nanomaterial proved to be able to anchor and release the insecticide gradually in pH between 5 and 6 regions, which makes it feasible for use in cattle, prolonging the exposure time between the tick and acaricide. Key words: Extracts, nanoparticle, controlled release, tick.
- Published
- 2016
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