| Texto completo | |
| Autor(es): |
de Souza Buriti, Mateus
;
Follegatti-Romero, Luz Milagros
;
Recavarren-Rios, Edgar
;
Veggi, Priscilla Carvalho
;
Sampaio, Klicia Araujo
;
Follegatti-Romero, Luis Alberto
Número total de Autores: 6
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Brazilian Journal of Chemical Engineering; v. N/A, p. 12-pg., 2025-05-27. |
| Resumo | |
The carnauba palm (Copernicia prunifera), native to Brazil's semi-arid Northeast and tolerant of saline, poorly drained soils, presents significant yet underutilized economic potential. Its seeds, though largely neglected, are rich in oil composed of short- and medium-chain saturated fatty acids-similar to those found in coconut and palm kernel oils-as well as valuable antioxidants. This study investigates the extraction of bioactive compounds from carnauba seeds using Supercritical Fluid Extraction (SFE) with carbon dioxide (SC-CO2), in comparison with conventional Soxhlet extraction. SFE was conducted under varying operational parameters, including pressure (20-30 MPa), temperature (40-80 degrees C), solvent-to-feed ratio (36-72), and particle size (0.77-1.54 mm). The highest oil yield (6.16%) was achieved at 80 degrees C, 30 MPa, and an S/F ratio of 54 with smaller particle size. Under these conditions, SFE produced oil enriched in medium-chain fatty acids, particularly lauric acid, and enabled efficient recovery of tocols. The maximum tocol content (354.94 mg/kg), with the highest alpha-tocopherol concentration, was observed at the same temperature and pressure but with larger particle size. In contrast, Soxhlet extraction yielded higher levels of beta- and gamma-tocopherols. These findings demonstrate that SFE is a sustainable and efficient method for extracting high-value oils and antioxidants from carnauba seeds, highlighting its potential to support bioeconomic development and the conservation of native biomes. (AU) | |
| Processo FAPESP: | 19/22085-4 - Equilíbrio líquido-líquido na recuperação de ácidos carboxílicos de águas residuárias usando solventes verdes |
| Beneficiário: | Luis Alberto Follegatti Romero |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |