Phytochemical screening of macrolichens Acroscyphus sphaerophoroides and Dirinaria consimilis from North East India for antioxidant and antibacterial activities

Abstract

This report deals with studies related to phytochemical screening, antioxidant potential and antibacterial activity of two macrolichens Acroscyphus sphaerophoroides Lev., a fruticose lichen and Dirinaria consimilis (Stirton) D.D. Awasthi, a foliose lichen. Qualitative phytochemical analysis showed the presence of alkaloids, terpenoids, saponins, glycosides, tannins and phenols. Acroscyphus sphaerophoroides and Dirinaria consimilis showed relatively antioxidant activity as revealed by DPPH study. A moderate iron chelation has been noted. Both the species showed antibacterial activity against gram-positive bacterial strain Staphylococcus aureus.