Phytochemical, proximate and antibacterial properties of Hibiscus Rosa-Sinensis L. Leaf

Abstract

The study was conducted to evaluate the phytochemical, proximate and antibacterial properties of Hibiscus rosa-sinensis leafd extracts. The study revealed that the phytochemical constituents were as follows: tannins (+++) combined anthraquinones (+++), cardiac glycosides (+++) while other with less concentration included Alkaloids (+), free Hydroxyanthraquinone were not present. Mean percentage proximate composition of the leaves showed carbohydrate (31.66), lipid (9.60), protein (7.01), fibre (3.99), ash contents (3.07) and morshline (2.63). The leaf extracts also showed composition of mineral elements in mg/g-1 as follows: (Ca = 772.57±0.01, K = 181.00±0.50, P =42.38±0.01, Na =0.33±0.09, Mn =2.40±0.03). Solvent extract of the Hibiscus leaves had a higher maximum zones of inhibition with 18.82±0.18 mm than aqueous extract with 14.00±1.05 mm around Bacillus subtilis. The least zone of inhibition was 11.00±1.20 mm against Stapylococcus aureus. Hibiscus rosa-sinensis leaves are recommended for their utilization as herbal medicinal with important antibiotic properties and as highly nutritive vegetable.