Comparative Studies on the Phytochemical Antioxidants and Mineral Composition of Rinorea Dentata (kuntze) Using Five Solvents System

Medicinal plants, since times immemorial, have been used in virtually all cultures as a source of medicine. The medicinal value of these plants lies in bioactive phytochemical constituents that produce definite physiological action on the human body. Rinorea dentata (P. Beauv.) Kuntze is a tropical plant species of the Violaceae family growing in and has been utilized for its medicinal properties. It is indigenous to the rainforest regions of Liberia, Cameroon, Uganda and Nigeria. This research is aimed at comparing the phytochemical antioxidants and mineral composition of Rinorea dentata (kuntze) using five solvents system. In this research, the methanolic extracts of the leaves, stem and root was evaluated for phytochemical composition, proximate analysis, antioxidant composition and mineral composition. The FRAP, ABTS, NO, OH%, DPPH and Fe2+ chelation are all significantly different across each extracts of the stem and leaves respectively, all which was obtained through the use of the five (5) solvents system. The flavonoids and total phenolic gallic acid present in the experimented plants parts are not significantly different. Different values across the different concentrations ranging from 100ug/ml - 500 ug/ml was gotten for the antioxidant screening of the selected plants parts. Upon analysis, the following proximate values like ash (ranging 1.53-2.45), crude fat (4.41-4.61), crude protein (9.45-9.76), crude fibre (4.23-4.96), carbohydrate (70.69-70.87) and moisture content (7.67-8.78) were obtained. The ethanolic extract of the experimented plant parts mainly contained alkaloids, also contained flavonoids, tannins, saponins, phenolic and steroids. Presence of minerals in the parts was also observed. Conclusively, this research shows that the phytochemical screening of medicinal plants is very important and crucial in identifying new sources of therapeutically and industrially important compounds.