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Association of zein nanoparticles with botanical compounds for effective pest control systems
Author(s) -
de Oliveira Jhones L,
Campos Estefânia V R,
GermanoCosta Taís,
Lima Renata,
Vechia Jaqueline Franciosi Della,
Soares Sidneia Terezinha,
de Andrade Daniel Junior,
Gonçalves Kelly Cristina,
do Nascimento Joacir,
Polanczyk Ricardo Antonio,
Fraceto Leonardo Fernandes
Publication year - 2019
Publication title -
pest management science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.296
H-Index - 125
eISSN - 1526-4998
pISSN - 1526-498X
DOI - 10.1002/ps.5338
Subject(s) - eugenol , pesticide , integrated pest management , pest analysis , pest control , chemistry , biopesticide , toxicology , microbiology and biotechnology , biology , botany , agronomy , organic chemistry
BACKGROUND Botanical compounds from plant species are known to have pesticidal activity and have been used in integrated pest management programs. The varied spectrum of the pesticidal action of these compounds can also avoid selection of resistance in pest populations. In this study, mixtures of the botanical compounds geraniol, eugenol and cinnamaldehyde were encapsulated in zein nanoparticles to improve their stability and efficiency. Biological effects of the nano‐scale formulations of the botanical compounds were evaluated against two agricultural pests: the two‐spotted spider mite ( Tetranychus urticae ) and the soybean looper ( Chrysodeixis includes ). RESULTS The formulations were stable over time (120 days) with a high encapsulation efficiency (>90%). Nanoencapsulation also provided protection against degradation of the compounds during storage and led to a decrease in toxicity to non‐target organisms. The release of the compounds (especially eugenol and cinnamaldehyde) from the nanoparticles was directly influenced by temperature, and the main mechanism of release was through a diffusion‐based process. Nanoencapsulated compounds also showed superior efficiency compared to the emulsified compounds in terms of repellency and insecticidal activity. CONCLUSION The findings of this study indicate that the convergence of botanical compounds with nano‐scale formulation has the potential to improve efficacy for their sustainable use in integrated pest management in agriculture. © 2019 Society of Chemical Industry