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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Supercritical CO2 extraction of alpha-/beta-amyrin from uvaia (Eugenia pyriformis Cambess.): Effects of pressure and co-solvent addition

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Klein, Elissandro Jair [1] ; Nathia-Neves, Grazielle [2] ; Vardanega, Renata [2] ; Meireles, M. Angela A. [2] ; da Silvan, Edson Antonio [3] ; Adeodato Vieira, Melissa Gurgel [1]
Total Authors: 6
[1] Univ Estadual Campinas, UNICAMP, Sch Chem Engn, Ave Albert Einstein 500, BR-13083852 Campinas, SP - Brazil
[2] Univ Estadual Campinas, UNICAMP, Sch Food Engn, LASEFI Dept Food Engn, R Monteiro Lobato 80, BR-13083862 Campinas, SP - Brazil
[3] Western Parana State Univ, Ctr Engn & Exact Sci, Rua Fac 645, BR-85903000 Toledo, PR - Brazil
Total Affiliations: 3
Document type: Journal article
Web of Science Citations: 0

The obtaining of alpha-/beta-amyrin from Eugenia pyriformis leaves is a subject with few studies that needs to be explored further in order to extend the understanding about processes to recover these compounds. Thus, the objective of this study was to evaluate the effects of pressure and co-solvent addition in the supercritical CO2 extraction regarding the global extraction yield, alpha-/beta-amyrin purity and yield, and antioxidant activity. Extractions were performed at pressures varying in the range 15-30 MPa at fixed temperature of 60 degrees C. The effect of co-solvent was evaluated at 5 and 15% (w/w) of ethyl acetate and ethanol. The best pressure for increasing alpha-/beta-amyrin yield was 20 MPa. The co-solvent addition increased the global extraction and alpha-/beta-amyrin yields, achieving a yield of 16.12 mg g(-1) RM (raw material) by using 15% ethanol, while the highest alpha-/beta-amyrin purity was obtained by using 5% of ethyl acetate as co-solvent. (C) 2019 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 15/22952-9 - Obtaining and purification of ± and ß-amyrin from leaves Uvaia (Eugenia pyriformis Cambess)
Grantee:Elissandro Jair Klein
Support type: Scholarships in Brazil - Doctorate