Antioxidant activity of phenolic and phenylethanoid glycosides from Teucrium polium L

► The antioxidant activity in vitro was tested for all classes of isolated compounds from Teucrium polium L. ► The chemical structures were established by spectroscopic analysis, including 1D and 2D NMR. ► Structure-activity relationships have been discussed. ► The natural compounds could be used as natural antioxidants in foods.