Antioxidant properties, phenolics and flavonoids content of some economically important plants from North-west Indian Himalaya.

The present study investigated antioxidant properties, total phenolic and flavonoid contents in methanol extract of the leaf, stem bark, and fruit of Royle, L., and L. grow naturally in the north-west Indian Himalaya. Phenolics and flavonoids content was found to be maximum in methanol extracts of stem bark and leaf (9.28 mg GAE/g fw and 14.73 mg QE/g fw, respectively) of plants. Ferric reducing antioxidant power and DPPH radical scavenging activity were found to be maximum in leaf and stem bark (38.88 mM AAE/g fw and 20.31 mM AAE/g fw, respectively) of plants, whereas maximum ABTS radical scavenging activity (4.52 mM AAE/g fw) was recorded with stem bark of plants. These tree species were found rich in natural compounds and also possess antioxidant activities. Therefore, their pharmaceutical and local uses for the health benefits are suggested.