Antioxidant Capacity and Phenolic Content of Some Nepalese Medicinal Plants

Bijaya Laxmi Maharjan, Bikash Baral

Biotechnology Laboratory, Nepal Academy of Science and Technology (NAST), Kathmandu, Nepal..
Natural Products Research Laboratory, Nepal Academy of Science and Technology (NAST), Kathmandu, Nepal;.

DOI: 10.4236/ajps.2013.48200                

Abstract

Antioxidant capacities and phenolic contents of medicinal plants namely Usnea longifolia, Cetraria nepalensis, Parmelia minarum, Everniastrum nepalense, Rhododendron anthopogon and Fritillaria delavayi were analyzed via Folin-Ciocaltau assay, Ferric reducing activity power assay and 2,2-Diphenyl-1-picrylhydrazyl assay. All the tested plants depicted the antioxidant activity with variation in extent of activity among the plants. The FRAP (F-value: 387.4), DPPH (F-value: 89.684) and TPC (F-value: 559.163) values between the extracts showed the highly significant differences (P < 0.01). This study indicated the strong antioxidant potential of R. anthopogon among the plants tested.

Keywords

DPPH; FRAP; Fritillaria; Lichens; Phytochemicals; Rhododendron; TPC

Conflicts of Interest

The authors declare no conflicts of interest.

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