Author(s):

Mahamane IDI ISSA Abdoulahi, Bakasso Sahabi, Hama Garba Rahila, Hama Hamadou Habibou, Hassane Hamidou Zeinabou, Ilagouma Amadou Tidjani, Martin Kiendrebeogo and Hassimi Sadou

Abstract: The objective of the study is to quantify the secondary metabolists and assess the antioxidant activity of six plants: Bauhinia rufescens Lam, Blepharis linariifolia PERS, Chrozophora brocchiana Vis, Gardenia ternifolia Schum and Thonn, Indigofera astragalina DC and Phyllanthus pentandrus Schumach and Thonn. These plants are used in traditional medicine against diseases linked to dentition.The contents of total polyphenols, total flavonoids and total tannins, were determined by spectrophotometry as well as the antioxidant activity. The highest contents of phenolic compounds were obtained with the extracts of C. brocchiana and P. pentandrus with respectively 260.05 ± 0.07 and 256.08 ± 1.07 mg GAE/g. For total flavonoids the highest content is obtained with Chrozophora brocchiana with 51.60 ± 0.28 mg QE/g. For total tannins, the high content is obtained with the extract of B. rufescens with 28.97 ± 0.93 g/L. The best reducing power is obtained with the extract of C. brocchiana with 2.32 mmol AAE/g. A good correlation (r = 0.91) was found between the polyphenol content and the reducing power, for flavonoids this correlation is r = 0.84 and r = 0.27 for tannins. The study would justify the traditional use of these plants, also it offers preliminary data for an indepth study.

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