Journal
JOURNAL OF THE BRAZILIAN CHEMICAL SOCIETY
Volume 33, Issue 1, Pages 85-+Publisher
SOC BRASILEIRA QUIMICA
DOI: 10.21577/0103-5053.20210126
Keywords
orange essential oil; microencapsulation; spray-drying; HS-GC-FID analyses; Spodoptera frugiperda control
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Funding
- National Council for Scientific and Technological Development-CNPq [465357/2014-8, 403302/2013-7, 306109/2018-2, 429404/2018-2]
- Sao Paulo Research FoundationFAPESP [2012/25266-9, 2018/21201-8, 2014/50918-7]
- Coordination for the Improvement of Higher-Level Personnel (CAPES) [001]
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [18/21201-8, 14/50918-7] Funding Source: FAPESP
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Sustainable natural product-based microstructured systems and biopolymers show great potential in crop protection. In this study, lignin and gelatin microcapsules loaded with orange essential oil were developed using spray-drying method to enhance its functionality. The controlled release mechanisms, biological effects, structural and thermal properties were evaluated. Results showed that the type of biopolymer played a crucial role in the quality analysis. The microcapsules loaded with orange essential oil exhibited increased toxicity against Spodoptera frugiperda compared to non-encapsulated oil.
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.
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