1. Supercritical carbon dioxide extraction of pomegranate peel-seed mixture: yield and modelling
- Author
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Tan, Wei Kiat, Lee, Sin Yee, Lee, Wan Jun, Hee, Yen Yi, Zainal Abedin, Nur Hanani, Abas, Faridah, Chong, Gun Hean, Tan, Wei Kiat, Lee, Sin Yee, Lee, Wan Jun, Hee, Yen Yi, Zainal Abedin, Nur Hanani, Abas, Faridah, and Chong, Gun Hean
- Abstract
By-products produced during the processing of pomegranate (Punica granatum L.) juice are currently undervalued and discarded, hence, this study investigated the effects of temperature (30–60 °C) and pressure (10–40 MPa) on the supercritical carbon dioxide (scCO2) extraction of a mixture of pomegranate peels and seeds (1:1) at a fixed CO2 flow rate of 10 L/min (0.1 MPa, 25 °C). The global yield increased with temperature but decreased with pressure, with the highest global yield (11.5%) obtained at 40 MPa and 40 °C. The reaction constants (0.044–0.066 min−1) and activation energy (6.06 kJ/mol) were determined with the first-order model. The Pardo-Castaño model I correlated with the experimental data with an average absolute relative deviation (AARD) of 6.1%, with the Chrastil model correlating with the solubility data with an AARD of 2.5%. The synergistic effect of PME was demonstrated with regard to yield as it had a higher extract to seed ratio.
- Published
- 2021