EVALUATION OF THE ANTIOXIDANT CAPACITY OF PHENOLIC EXTRACTS OF TWO LOCAL PLANTS: PLANTAGO CILIATA (DESF) AND THYMELAEA MICROPHYLLA (COSS. ET DUR)

Authors

  • A. Tounsi Laboratoire des Sciences Fondamentales, Université Amar Telidji de Laghouat, route de Ghardaia, BP 37G, Laghouat 03000
  • A. Djeridane Laboratoire des sciences fondamentales, Université Amar Telidji. PB 37G, 03000, Laghouat
  • M. Yousfi Laboratoire des sciences fondamentales, Université Amar Telidji. PB 37G, 03000, Laghouat
  • M. Saidi Laboratoire V.P.R.S, Université de Ouargla, BP 511 route de Ghardaia.30000 Ouargla

DOI:

https://doi.org/10.4314/jfas.v10i3.12

Keywords:

Plantago ciliata, Thymelaea microphylla, Polyphenols, Flavonoids, Antioxidant capacity

Abstract

The antioxidant capacity of aerial parts extracts of Plantago ciliata and Thymelaea microphylla has been studied. The quantitative estimation of total phenolics and flavonoids revealed that Thymelaea microphylla had the highest total phenolic content  (12.33 ± 0.01-4.35 ± 0.04 mg GAE / g) and flavonoids (5.2 ± 0.08-1.09 ± 0.05 mg CaE / g) when compared to Plantago ciliata extracts. However, the highest total phenols and flavonoids contents were obtained using methanol/water (80/20) as extraction solvent system. The antiradical power measured by the DPPH assay showed that PM3 extract exhibited significantly higher antioxidant effect when compared with standard antioxidants (BHA, Vit. C and Vit. E) with an EC50 value equal to 3.50 ± 0.05 mg / l. On the other hand, all tested extracts revealed reducing powers measured by the PPM method higher than standard antioxidants.

Author Biography

A. Djeridane, Laboratoire des sciences fondamentales, Université Amar Telidji. PB 37G, 03000, Laghouat

Laghouat

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Published

2018-09-20

Issue

Vol. 10 No. 3 (2018)

Section

Research Articles

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