Résumé:
This work is part of the valorization of the Haloxylon scoparium plant, belonging to the
Chenopodiaceae family and native to south of Algeria. The aim of the present work is to
estimate the phenolic compounds contents of its extracts and to evaluate their antioxidant
power. After extraction by maceration of the aerial part of Haloxylon scoparium, the yield of
extracts was calculated. The best extraction yield is obtained in the methanolic extracts
9.11%. Phytochemical screening investigations using standard method showed that the aerial
part contains mainly phenols and flavonoids. The quantitative analysis using
spectrophotometric assay revealed that the methanolic extract had the highest phenols and
flavonoids contents (307.58 mg AGE/g extract and 9.34 mg CE/g extract, respectively). The
antioxidant activity of the various extracts obtained is evaluated by the DPPH radical
scavenging method. The examination of the inhibitory concentration values shows that the
methanolic extract is the most active with values of IC50 = 0.25 mg/mL. These findings
revealed that H. scoparium extracts could be a natural source of antioxidants that can prevent
several diseases
