extracts of Persea americana Mill.; antioxidant activity (AoA); biologically active substances (BAS); oxidative modification of proteins (OMP); lipid peroxidation (LPO)

 Experimental detection and determination of the concentration of several groups of biologically active substances in aqueous-ethanolic extracts of avocado seeds (Persea americana Mill.) reliably confirmed the presence of phenols (up to 1.19 mg/ml), flavonoids, and amino acids. Extracts of dried avocado seeds, prepared using 40% ethanol as an extractant, demonstrated the highest antioxidant activity.