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Alcohol-based aqueous biphasic system applied to partition four different natural bioactive compounds from Garcinia indica Choisy

ABSTRACT An attempt was made to simultaneously partitioning Anthocyanins (ACN), Hydroxycitric acid (HCA), Garcinol (GL), and Isogarcinol (IGL) from fruit rinds of Garcinia indica using the 1-propanol and magnesium sulfate system. The influences of 1-propanol and magnesium sulfate concentration and Tie line Length (TLL) were investigated to obtain the optimal partitioning and recovery of GL and IGL into the top-phase and ACN and HCA to the bottom phase. The 25% w/w 1-propanol and 12% w/w magnesium sulfate system showed the maximum extraction efficiency for all the compounds. The purity and recovery were further improved by employing the second stage ATPS.