Abstract
Enhanced extraction of phenolic compounds from pericarps of mangosteen by subcritical water treatment was performed at various temperatures and pressures of 120–160°C and 1–10MPa in batch and semi–batch systems. Instead of water, the deionized water which contains deep eutectic solvent at 10–30% volume was used as an extraction media. With 30% of deep eutectic solvent addition, the yields of xanthone and phenolic compounds content were 24.87mg/g dried sample and 179.54mg of gallic acid equivalent (GAE)/g dried sample at extraction temperatures of 160 and 120°C in batch system, respectively. They could achieve to 27.15mg/g dried sample and 372.69mg of GAE/g dried sample when the extraction were performed in semi–batch system at temperature of 160°C and pressures of 5 and 10MPa with 10 and 30% of deep eutectic solvent addition, respectively.
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