PHYTOCHEMICAL SCREENING, IN VITRO ANTIOXIDANT AND ANTIBACTERIAL ACTIVITY OF RUMEX VESICARIUS L. EXTRACT

Abstract

Rumex vesicarius L. (Polygonaceae), an edible plant has many important medicinal uses in the southeast of Algeria. The medicinal importance of this plant is a reflection of its chemical composition since the plant contains many bioactive substances. This research investigated the polyphenols profiling (total phenolic content, flavonoids, and condensed tannins), antioxidant and antibacterial properties of ethanolic extracts of seed, flower, leaf and stem from Rumex Vesicarius L. The total phenolic, flavonoid, condensed tannins contents, and antioxidant activity of all the parts extract was quantified. All extracts showed the presence of phenolic compounds and exhibited different levels of free radical scavenging activity against ABTS and superoxide radicals. In addition, for antibacterial activity, the following bacteria were tested: Salmonella typhimurium (ATCC 13311), Escherichia coli (ATCC 35210), Bacillus subtilis (ATCC 10907), Staphylococcus epidermidis (ATCC 12228), Staphylococcus aureus (ATCC 29213) and Pseudomonas aeruginosa (ATCC 27853). Results showed that all extracts possessed concentration-dependent antioxidant activity. The study concludes that Rumex vesicarius L possess diverse therapeutic potentials that might be used as natural antioxidant and antibacterial.

Keywords

• ABTS
• antibacterial activity
• metal chelating scavenging
• phenolic content
• Rumex vesicarius L
• superoxide radical