Use of lignins from sugarcane bagasse for assembling microparticles loaded with Azadirachta indica extracts for use as neem-based organic insecticides

Research output: Journal contributionsJournal articlesResearchpeer-review

Authors

  • Eveline S. Costa
  • Bruno Perlatti
  • Everton M. Da Silva
  • Andreia P. Matos
  • Maria Fátima G.F. Da Silva
  • João B. Fernandes
  • Vânia G. Zuin
  • Caio M.P. Da Silva
  • Moacir R. Forim

Microcapsules of sugarcane bagasse lignin loaded with organic extracts of neem (Azadirachta indica) were prepared and evaluated as potential bioinsecticides. Lignins were extracted and modified by oxidation and acetylation reactions providing different biopolymers. Afterwards, they were characterized through several analytical techniques. The formulations were initially prepared as colloidal suspension of lignin nanoparticles, which were then spray-dried. The products were submitted to quality control protocols using high performance liquid chromatography (HPLC), thermal and photochemical degradation studies, followed by biological assays against Spodoptera frugiperda and Diatraea saccharalis. The formulations showed increases in both thermal and photo stability of approximately 40% compared with control samples. All the formulated microparticles were efficient against the insects evaluated and required a shorter time to achieve 100% mortality than the controls. The use of sugarcane bagasse lignins to prepare microparticles improved the resistance of neem extracts against abiotic factors, retaining the biological activity of this biopesticide.

Original languageEnglish
JournalJournal of the Brazilian Chemical Society
Volume28
Issue number1
Pages (from-to)126-135
Number of pages10
ISSN0103-5053
DOIs
Publication statusPublished - 01.01.2017
Externally publishedYes

Bibliographical note

Publisher Copyright:
©2017 Sociedade Brasileira de Química.

    Research areas

  • Biopesticide, Biorational control, Lignin, Microparticle, Stability
  • Chemistry

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