Hydrogels containing botanical repellents encapsulated in zein nanoparticles for crop protection

Oliveira, Jhones Luiz de [UNESP]; Campos, Estefânia V. R.; Camara, Marcela Candido; Vechia, Jaqueline Franciosi Della; Matos, Sidneia Terezinha Soares de; Andrade, Daniel Junior de; Gonçalves, Kelly Cristina; Nascimento, Joacir do; Polanczyk, Ricardo Antonio; Araújo, Daniele Ribeiro de; Fraceto, Leonardo Fernandes

Hydrogels containing botanical repellents encapsulated in zein nanoparticles for crop protection

Arquivos

oliveira_jl_preprint_soro_hydrogels.pdf (1.9 MB)

Data

2020

Autores

Oliveira, Jhones Luiz de

Campos, Estefânia V. R.

Camara, Marcela Candido

Vechia, Jaqueline Franciosi Della

Matos, Sidneia Terezinha Soares de

Andrade, Daniel Junior de

Gonçalves, Kelly Cristina

Nascimento, Joacir do

Polanczyk, Ricardo Antonio

Araújo, Daniele Ribeiro de

Editor

ACS

Tipo

Artigo

Direito de acesso

Acesso aberto

Resumo

Essential oils and their derivatives are eco-friendly biopesticides that can contribute to reducing the use of synthetic pesticides in agricultural pest control, offering advantages including less harm to humans and the environment. This work concerns hydrogel-based repellent systems containing botanical compounds that were emulsified or encapsulated in zein nanoparticles. The hydrogels were prepared according to a two-step process involving molding and crosslinking. They presented good rheological properties, even at elevated temperature (40 oC), a swelling degree of about 30±1.2%, and were able to modulate the release of active compounds. The hydrogels containing botanical compounds presented high repellency (>80%) against two important agricultural pests: whitefly (Bemisia tabaci) and two-spotted spider mite (Tetranychus urticae). These repellent systems are promising for use in sustainable agriculture, since they are based on the use of natural substances for both the matrices and the active agents. It is noteworthy that the systems can be used without direct contact with plants, which minimizes any problems related to phytotoxicity.