ANTIMICROBIAL ASSAY AND PHYTOCHEMICAL ANALYSIS OF MENTHA VIRIDIS (L.)L., FROM DIBRUGARH, ASSAM

Abstract

The study was conducted to determine the antimicrobial, antioxidant and phytochemical properties of Mentha viridis (L.)L. collected from Dibrugarh, Assam. All the parts tested recorded presence of phytochemicals like- tannins, flavonoids, terpenoids, steroids, glycosides, cardiac glycosides, saponins, carotenoids, alkaloids, reducing sugar and phenol. Methanol extract of mature leaves recorded highest total phenol and flavonoid content (12.02±0.00 mgCE/g extract and 9.59±0.00 mgQE/g extract respectively). Methanol extract of young leaves recorded highest antioxidant inhibition against ABTS (81.62±1.43%). Solvent extract of young leaves recorded antibacterial inhibition against both gram positive and gram negative bacteria like-Bacillus subtilis, B. cereus, Staphylloccus aureus and Escherichia coli. Methanol extract of mature leaves recorded inhibition against Candida albicans (10±2mm) which is near to the inhibition recorded by Clotrimazole (10mcg)(11±2mm) against C. albicans. From the present study, it can be concluded that the methanol extract is more potent in extracting phytochemicals from the plant which are responsible for the antioxidant and antimicrobial activity of the plant.