Autor(es): Aguiar,Maria Clara S. ; Denadae,Bárbara E. ; Silva,Maria Fátima G. F. ; Fernandes,João B. ; Bittencourt,Paulo R. S. ; Scremin,Fernando R. ; Forim,Moacir R.
Data: 2022
Origem: Oasisbr
Assunto(s): orange essential oil; microencapsulation; spray-drying; HS-GC-FID analyses; Spodoptera frugiperda control
Sustainable natural product-based microstructured systems and biopolymers are strong candidates for use in crop protection. Lignin and gelatin microcapsules loaded with orange essential oil were developed with spray-drying in order to enhance its potential. We evaluated the microparticle controlled release mechanisms, biological effects, structural and thermal properties. A quantitative method using headspace-gas chromatography was developed and evaluated for the controlled release of the essential oils. Controlled release studies showed a linear relationship between the biopolymer and essential oil concentrations when retaining volatile compounds. Thermal analyses demonstrated increases in essential oil stability when microencapsulated, especially for lignin as a biopolymer. These results showed that biopolymer type was the main factor influencing quality analysis parameters. Finally, microcapsules loaded with orange essential oil were applied in a bioassay, and showed gains in toxicity against Spodoptera frugiperda compared to non-encapsulated oil.
