Abstract
Plant imitative products have been used for medicinal purposes for centuries. In traditional Indian medicine or Ayurveda, Prunella Vulgaris and many other herbs have been used as medicine. Traditional uses of plants have led to investigating their bioactive compounds, which have resulted in the detection of a significant number of therapeutic properties. The aim of present investigation was carried out to evaluate the phytochemical, antioxidant and antimicrobial activity of chloroform and hydroalcoholic leaves extracts of Prunella Vulgaris against microbial strains causing oral infections. Both chloroform and hydroalcoholic extracts revealed the presence of carbohydrate, triterpenoids/ steroids, flavonoids, tannin, phenolic compound and saponins were absent in only the chloroform extract. The bioactivities of the leaf extracts were qualified to their phytochemical constituents. Quantitative analysis of phenolic and flavonoids was carried out by Folins Ciocalteau reagent method and aluminium chloride method respectively. The In vitro antioxidant activity of chloroform and hydroalcoholic leaves extracts of Prunella Vulgaris was assessed against 2,2-diphenyl-1-picryl- hydrazyl (DPPH) radical scavenging activity, reducing power assay using standard protocols. The antimicrobial activity of chloroform and hydroalcoholic extracts of medicinal plants was evaluated using well diffusion method against Escherichia coli and Candida albicans. The TPC in chloroform extract was higher than that of the hydroalcoholic extract with concentration being 0.443 mg/g equivalent to gallic acid. The TFC in hydroalcohoilc extract was higher than that of the chloroform extract with concentration being 0.358 mg/g equivalent to rutin. The present study recognized leaves extract of Prunella vulgaris as a promising antioxidant and antimicrobial agent. However, further investigations are needed to understand the mechanistic basis of this effect of the extract and its chemical constituents thereof.
 Keywords: Prunella vulgaris, Phytochemical, Antioxidant, Antimicrobial activity, Folins Ciocalteau reagent, Quantitative analysis
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