The Study of Phytochemical, Antioxidant and Antimicrobial of Tribulus macropterus Boiss. var. arabicus (Hosni) Al-Hemaid & J. Thomas, Yemen

Abstract

The screening of the of the vegetative and fruit of 70% ethanol, 70% methanol and aqueous extracts showed the presence of tannins, carbohydrates, saponins, glycosides, flavonoids, terpenoids, coumarins and alkaloids. The vegetative part was found to possess comparatively higher values of alkaloids, glycosides, saponins, total phenolic and total flavonoids content. Of all the ethanol extracts tested from vegetative and fruit part exhibited strong antioxidant potential in scavenging DPPH, hydrogen peroxide, phosphomolybdenum assay and  reducing power ( IC50 values; 288.47 and 282.05 µg/mL, 58.64 mg ascorbic acid equivalents/g sample and 0.40; 400.1 and 381.07 mg/mL, 38.63 mg ascorbic acid equivalents/g and 0.37, respectively). In ferric reducing assay the absorbance was found to increase with increase in concentration

The ethanol and aqueous extracts from vegetative and fruit parts of investigated plant parts had antibacterial activity in which vegetative showed highest values but did not show any antifungal activity.