Sequential high-pressure extraction of caffeine and bioactive compounds from caferana seeds (Bunchosia glandulifera)
| Autor: | Sara Fraga, Paula Virginia de Almeida Pontes, Antonio J. A. Meirelles, Larisa Ribas, Lilian Bozzi Barbeiro, Klicia Araujo Sampaio, Ericsem Pereira, Daniel Gonçalves, Fernando A. Cabral, Fábio D. Nasário |
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| Rok vydání: | 2020 |
| Předmět: |
0303 health sciences
Chromatography Supercritical carbon dioxide Ethanol Antioxidant 030309 nutrition & dietetics Chemistry General Chemical Engineering medicine.medical_treatment Extraction (chemistry) 04 agricultural and veterinary sciences Condensed Matter Physics 040401 food science 03 medical and health sciences chemistry.chemical_compound 0404 agricultural biotechnology Yield (chemistry) medicine Composition (visual arts) Physical and Theoretical Chemistry Caffeine Bunchosia glandulifera |
| Zdroj: | The Journal of Supercritical Fluids. 165:104958 |
| ISSN: | 0896-8446 |
| Popis: | Caferana (Bunchosia glandulifera) is a Brazilian plant that produces small red fruits with high nutritional value and possible anti-aging effects. This study aimed to evaluate the composition of caferana seed extracts obtained by sequential extractions with supercritical carbon dioxide in the first step, followed by pressurized liquid extractions using ethanol (second step) and water (third step) as solvents. Obtained extracts were characterized in terms of global yield, caffeine, tocols, fatty acids contents, and total phenolics, as well as their antioxidant activity, and results were thus compared with the conventional extraction method. Sequential extraction showed the best global yield (62.4 %). Supercritical carbon dioxide extract was more concentrated in caffeine (8.44 mg/g), and ethanolic one was more concentrated in total phenolic compounds with higher antioxidant activity capacity, whereas aqueous extract contained low levels of all monitored compounds. Overall, sequential extraction reveled increased selectivity and efficiency in obtaining extracts enriched with different compounds. |
| Databáze: | OpenAIRE |
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