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This study compared phenolic contents and antioxidant activity in different organs of Acacia albida (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.
Funding
This work was supported by the Algerian Ministry of Higher Education and Scientific Research, Centre de Recherche Scientifique et Technique sur les Régions Arides (CRSTRA, Algeria) and Centre de Biotechnologie de Borj Cédria (CBBC, Tunisia).