Mineral Element and Antioxidant Potential of Four Plants Used in Traditional Medecine in Brazzaville-Congo

Background: Plants represent an important natural resource of secondary metabolites with therapeutic properties and nutrients, including minerals, which contribute to the proper functioning and well-being of the human body.

Aims: Four medicinal plants used in Congo-Brazzaville were selected in order to determine their mineral element content and assess their antioxidant activity.

Methodology: Mineral element content were determined by atomic absorption spectrometry with flame and flameless. The antioxidant activity assessed, using the DPPH radical scavenging test and iron reducing capacity (FRAP).

Results: Eight (08) macroelements and five (05) trace elements from these plants have been quantified. The antioxidant potential showed that organic extracts were more active than aqueous extracts. However, this antioxidant potential remains low compared to that of ascorbic acid used as the reference antioxidant. Garcinia kola (seeds) and Ageratum conyzoides (leafy stems) were rich in mineral elements. Similarly, Cogniauxia podoleana (leaves) and Garcinia kola (seeds) showed remarkable antioxidant potential.

Conclusion: The presence of thirteen mineral elements and the antioxidant potential are proved in these plants. Would therefore help to maintain the immunity of the human body by resisting various pathologies such as bacterial infections, malaria, inflammations and gastrointestinal disorders.