Enzymatic water extraction of taxifolin from wood sawdust of Larix gmelini (Rupr.) Rupr. and evaluation of its antioxidant activity

► Organic solvent free. ► Combined enzyme system was used for the extraction of taxifolin and total flavonoids in Larix gmelini (Rupr.) Rupr. sawdust. ► Taxifolin extracted by EI-WE method can be used as food additive for its excellent antioxidant activity. ► CCD (central composite design) was used for the optimisation of taxifolin and total flavonoids extraction condition. ► Realise material recycle, for L. gmelini (Rupr.) Rupr. sawdust is generally deserted as castoff.