Characterization of flavonoids from Dryopteris erythrosora and evaluation of their antioxidant, anticancer and acetylcholinesterase inhibition activities

► Flavonoids derivatives of Dryopteris erythrosora were characterized by HPLC-DAD-ESI-MS. ► The anticancer and antioxidant activities of flavonoids from D. erythrosora were evaluated. ► The relationship between antioxidant and anticancer activity of fern flavonoids was explored. ► The relationship between flavonoids content and antioxidant potential was investigated.