Quality Control for Lignin and Gelatin Microcapsules Loaded with Orange Essential Oil

• Autor(a) principal: Aguiar,Maria Clara S.
• Data de Publicação: 2022
• Outros Autores: Denadae,Bárbara E., Silva,Maria Fátima G. F., Fernandes,João B., Bittencourt,Paulo R. S., Scremin,Fernando R., Forim,Moacir R.
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Journal of the Brazilian Chemical Society (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532022000100085
• topic: 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.