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|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.
|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.|
|Appears in Collections:||CICECO - Artigos|
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|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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