Physiochemical properties of Sarawak's adapted Liberica coffee silverskin utilizing varying solvents

This study aimed to investigate the physiochemical properties of Sarawak's adapted Liberica coffee silverskin (CS) using multiple solvents (distilled water, methanol, and ethanol) its impact on total phenolic content (TPC), flavonoid (TFC), antioxidant activities CS. The results showed that highest TPC was observed in methanol extract (15.24 ± 0.65 mg GAE/g), while TFC recorded when extracted with ethanol (25.14 0.59 QE/g). DPPH activity also found be (83.85 1.78%), concurred by FRAP assay as reduction (11.40 18.57 μmol FSE/g). These findings demonstrate bioactive compounds CS can greatly influenced choice solvent highlighting potential for further harnessed into a value-added product enabling better by-product waste management.