Antioxidant activity of sweetgrass (Hierochloe odorata Wahlnb.) extract in lard and rapeseed oil emulsions

摘要

The antioxidant activities of sweetgrass (Hierochloe odorata) and sage (Salvia officinalis) extracts were studied in emulsions of lard and rapeseed oil using soy lecithin as an emulsifier, and addition of cupric acetate as an oxidation catalyst. The antioxidant activity was about the same in the two substrates. The stability against autoxidation was substantially increased by both sweetgrass and sage extracts and their combination. The stability was particularly high, if citric acid and/or ascorbyl palmitate were added to plant extracts.