Evaluation of antioxidant activities of the edible and medicinal <i>Acacia albida</i> organs related to phenolic compounds

<div><p>This study compared phenolic contents and antioxidant activity in different organs of <i>Acacia albida</i> (leaves and bark) and focuses on identification of phenolic compounds of leaves by HPLC-DAD. The analysed organs exhibited differences in total polyphenol contents (100 and 59.5 mg GAE g^{− 1} DW). Phenolic contents of leaves were two times higher than those in bark. Ethanolic extracts exhibited good antioxidant activities with IC₅₀ = 26 μg mL^{− 1} for DPPH and EC₅₀ = 50 μg mL^{− 1} for FRAP. Identification by HPLC-DAD revealed the presence of nine phenolic compounds known for their high antioxidant activity. The results suggested that this species can be used as source of natural antioxidants.</p>