Abstract
Litsea belonging to the family Lauraceae, is among the most diverse genera of evergreen shrubs and trees. Litsea is distributed majorly in the Western Ghats of India. Litsea are traditionally used to treat cold, fever, bruises, insect bites and other diseases. The objective of this study was to understand the phytochemistry of the methanol extract of Litsea ghatica stem bark and evaluate it for potential antioxidant activity in an effort to understand the nature of phytoconstituents present in the stem bark. Phytochemical screening of the methanol extract indicated the presence of tannins, phenols, flavonoids, saponins and carbohydrates. The total phenolic and flavonoid content in the methanol extract was determined by Folin Ciocalteau’s and aluminum chloride methods, respectively. The antioxidant activity of the methanol extract was evaluated by 2,2-diphenyl-1-picrylhydrazyl, ferric reducing antioxidant power and NO radical scavenging assays. The methanol extract showed significant potential antioxidant activity, namely 93.08 and 95.1 % radical scavenging activity in DPPH assay at 100 ppm for the methanol extract and ascorbic acid, respectively. In FRAP and NO radical scavenging assay, the methanol extract showed dose dependent antioxidant activity reaching maximum at 100 ppm concentration. The anti-inflammatory activity was determined by in vitro albumin denaturation assay using naproxen as the reference standard. The results indicated encouraging anti-inflammatory activity with 18.53% inhibition at 60 ppm of the methanol extract. This preliminary anti-inflammatory data needs to be substantiated with additional in vitro and in vivo studies for conclusive evidence
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