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http://hdl.handle.net/10773/21003| Title: | Selective partition of caffeine from coffee bean and guarana seed extracts using alcohol-salt aqueous two-phase systems |
| Author: | Santos, Samuel B. Reis, Igor A. O. Silva, Camila P. C. Campos, Andressa F. Ventura, Sonia P. M. Soares, Cleide M. F. Lima, Alvaro S. |
| Keywords: | LIQUID-LIQUID-EXTRACTION IONIC LIQUIDS GREEN TEA LIPASE PURIFICATION PHASE-DIAGRAMS BIPHASIC SYSTEMS WATER RECOVERY SAMPLES ACETONITRILE |
| Issue Date: | 2016 |
| Publisher: | TAYLOR & FRANCIS INC |
| Abstract: | This work proposes the application of flexible alcoholic aqueous two-phase systems to manipulate the partition of caffeine. An optimization study was performed the caffeine partitioning towards top phase (60.0 wt% 2-propanol + 20.0 wt% K3PO4 at 303 K - K-caf = 3.4 and R-T = 89.1%) and bottom phase (60.0 wt% methanol + 17.5 wt% K2HPO4/KH2PO4 at 278 K - K-caf = 0.06 and R-B = 81.1%). These processes were evaluated by applying them to real biomass as guarana seeds (purification factor (PF) = 6.59-fold) and coffee beans (PF = 3.24-fold) for the 2-propanol and K2HPO4/KH2PO4 system. |
| Peer review: | yes |
| URI: | http://hdl.handle.net/10773/21003 |
| DOI: | 10.1080/01496395.2016.1199569 |
| ISSN: | 0149-6395 |
| Publisher Version: | 10.1080/01496395.2016.1199569 |
| Appears in Collections: | CICECO - Artigos |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Selective partition of caffeine from coffee bean and guarana seed extracts using alcohol-salt aqueous two-phase systems_10.108001496395.2016.1199569.pdf | 529.61 kB | Adobe PDF |  |
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