Ultrasound-Assisted Extraction of Phenolic Compounds from Polyscias fruticosa (L.) Harms Root

Polyscias fruticosa (L.) Harms root extracts were obtained and separated using ultrasound-assisted extraction (UAE) with the preset optimal parameters, such as solvent/solid (SS) ratio (50/1, mL g–1), ethanol concentration (40%, v/v), temperature (45 °C), time (20 min). The best values of total phenolic content (TPC) antioxidant capacity (AC) under these conditions 2.13 ± 0.02 mg gallic acid equivalents (GAE) per gram dry sample weight (DW) for TPC 78.13 0.25% AC. In addition, structure plant material was examined by scanning electron microscopy (SEM): it revealed that residues changed completely a result ultrasound treatment compared to initial material.