Objective - A greener approaches focusing on recovering the wastes of peels and seed kernels of mango as the low-cost source for high value-added products which constitute rich source of phenolic content.
Methodology/Technique - Ultrasonic-assisted solvent extraction (UAE) method is employed for the isolation of phenolic compound due to its ability to increase the extraction efficiency. The total phenolic content (TPC) of the mango peels and kernels are evaluated based extraction time, extraction temperature and ethanol concentration by employing One-Factor-at-Time (OFAT) screening method.
Findings - Maximum TPC for the mango peels are obtained at 15 minutes' extraction period, 40oC extraction temperature and 60% of ethanol concentration. Meanwhile for the mango seed kernel, the maximum TPC are achieved at 25 minutes' extraction period, 60oC extraction temperature and 60% of ethanol concentration. Among of the parameters tested, ethanol concentration exhibits significant influence towards TPC in both peels and seed kernel of mango followed by extraction temperature and extraction time.
Novelty - UAE method is employed for the isolation of phenolic compound due to its ability to enhance the extraction kinetics through acoustic cavitation produced in the solvent. Factors affecting the sonication process were also studied and the TPC of peels and kernel were compared.