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Antioxidant, antimicrobial and urease inhibiting activities of methanolic extracts from Cyphostemma digitatum stem and roots

Khan, Rasool, Saif, Abdullah Qasem, Quradha, Mohammed Mansour, Ali, Jawad, Rauf, Abdur, Khan, Ajmal
Natural product research 2016 v.30 no.4 pp. 486-488
alkaloids, antioxidant activity, antioxidants, coumarins, enzyme inhibition, flavonoids, fungi, inhibitory concentration 50, methanol, reducing sugars, roots, saponins, screening, secondary metabolites, tannins, terpenoids, thiourea, urease
Cyphostemma digitatum stem and roots extracts were investigated for antioxidant, antimicrobial, urease inhibition potential and phytochemical analysis. Phytochemical screening of the roots and stem extract revealed the presence of secondary metabolites including flavonoids, alkaloids, coumarins, saponins, terpenoids, tannins, carbohydrates/reducing sugars and phenolic compounds. The methanolic extracts of the roots displayed highest antioxidant activity (93.518%) against DPPH while the crude methanolic extract of the stem showed highest antioxidant activity (66.163%) at 100 μg/mL concentration. The methanolic extracts of both stem and roots were moderately active or even found to be less active against the selected bacterial and fungal strains (Tables S2 and S3). The roots extract (methanol) showed significant urease enzyme inhibition activity (IC ₅₀ = 41.2 ± 0.66; 0.2 mg/mL) while the stem extract was found moderately active (IC ₅₀ = 401.1 ± 0.58; 0.2 mg/mL) against thiourea (IC ₅₀ = 21.011; 0.2 mg/mL).