Anacardium occidentale L. leaves extraction via SFE: Global yields, extraction kinetics, mathematical modeling and economic evaluation

Autor(es)

Leitao, N. C. M. C. S. ^[1] ; Prado, G. H. C. ^[2] ; Veggi, P. C. ^[2] ; Meireles, M. A. A. ^[2] ; Pereira, C. G. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Rio Grande Norte UFRN, Dept Chem Engn, BR-59072970 Natal, RN - Brazil

^[2] Univ Campinas UNICAMP, Coll Food Engn, LASEFI DEA FEA, BR-13083970 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: JOURNAL OF SUPERCRITICAL FLUIDS; v. 78, p. 114-123, JUN 2013.
• Citações Web of Science: 27

Resumo

The purpose of this work was to obtain extracts from Anacardium occidentale leaves using supercritical fluid extraction (SFE). The use of ethanol and isopropyl alcohol as co-solvents was evaluated. Mass transfer kinetics experiments were performed, and overall extraction curves were modeled. SFE process was compared with different low pressure solvent extraction processes in terms of global yield and the composition of the extract. The techniques used as low pressure solvent extraction processes were: Soxhlet extraction, agitated bed extraction, ultrasound assisted extraction using ethanol as the solvent and hydrodistillation. The extracts were analyzed by thin layer chromatography (TLC) using different eluents. Finally, the economic evaluation was conducted using the software SuperPro designer 6.0 (R) to simulate the process and to estimate the cost of manufacturing (COM) of SFE extracts. The results indicated the presence of essential oils, flavonoids and antioxidant compounds in all the extracts. The higher yield of extract was obtained with the ultrasound assisted extraction. However, the samples with more functional compounds were verified in the SFE extracts and the extracts showed low COM. The model that best described the overall extraction curves for the SFE process was the Sovova model, which showed minimum values for the sum of the squares of the residues. (c) 2013 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 08/10986-2 - Obtenção de flavonóides de plantas brasileiras via tecnologia supercrítica utilizando co-solventes: aumento de escala e avaliação econômica
• Beneficiário: Priscilla Carvalho Veggi
• Modalidade de apoio: Bolsas no Brasil - Doutorado