Ultrasonic-assisted extraction, antimicrobial and antioxidant activities of Cyclocarya paliurus (Batal.) Iljinskaja polysaccharides

► Ultrasonic technology was used for polysaccharides extraction from C. paliurus. ► C. paliurus polysaccharide showed good antioxidant properties in vitro assays. ► C. paliurus polysaccharide demonstrated potent antimicrobial activity in vitro. ► C. paliurus polysaccharide can be explored as a novel natural antioxidant.