| Texto completo | |
| Autor(es): |
Klein, Elissandro Jair
[1, 2]
;
Santos, Katia Andressa
[1]
;
Palu, Fernando
[1]
;
Adeodato Vieira, Melissa Gurgel
[2]
;
da Silva, Edson Antonio
[1]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Western Parana State Univ, Ctr Engn & Exact Sci, Rua Fac 645, BR-85903000 Toledo, PR - Brazil
[2] Univ Estadual Campinas, UNICAMP, Sch Chem Engn, Ave Albert Einstein 500, BR-13083852 Campinas, SP - Brazil
Número total de Afiliações: 2
|
| Tipo de documento: | Artigo Científico |
| Fonte: | JOURNAL OF SUPERCRITICAL FLUIDS; v. 137, p. 1-8, JUL 2018. |
| Citações Web of Science: | 7 |
| Resumo | |
Uvaia (Eugenia pyriformis Cambess.) leaves were subjected to extraction with supercritical fluid extraction (SFE) and ultrasound-assisted extraction (UAE) under different conditions and the results were compared with a conventional maceration extraction. The extracts obtained with SFE were chemically characterized by gas chromatography-mass spectrometry (GC-MS), which showed that beta-amyrin (53.72%) and a-amyrin (24.63%) were their main compounds. The best results for SFE and UAE yieldings were 1.69% and 1.79%, respectively. The best results for amyrin content, by extract weight, were 81.19% for SFE and 77.03% for UAE. The highest amyrin content was 11.40 g of the isomers mixture per kg of dry leaf in SFE and 11.46 g kg(-1) in UAE. Scanning electron microscopy analysis showed differences in leaf particles before and after the extraction process, caused by the removal of compounds by the extraction techniques studied. (AU) | |
| Processo FAPESP: | 15/22952-9 - Obtenção e purificação de ± e ß-amirina a partir de folhas de Uvaia (Eugenia pyriformis Cambess) |
| Beneficiário: | Elissandro Jair Klein |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |