2018, Vol. 6, Issue 6, Part D

author(s)
Indubala Nongthombam, Priyanka Das and Jyotsna Devi

abstract
The Ethnobotanical and pharmacological evaluations of plant based chemicals have shown rapid strides in the last few decades. The present study was carried out to investigate the anti oxidant potential of methanolic extracts of flowers and leaves of Phlogacanthus thyrsiflorus by DPPH assay. Edible plant parts viz., fresh young and matured leaf, fresh flower, dry flower and dry matured leaf showed antioxidant activity and there was significant difference in the IC₅₀ values of the plant parts studied. The highest IC₅₀ was observed in fresh young leaf (57.20±0.96 mg) indicating the lowest antioxidant activity in fresh young leaf and the lowest IC₅₀ was observed in dry matured leaf (7.86±0.35 mg) indicating the highest antioxidant activity in dry matured leaf. Dried flower sample had higher antioxidant activity than fresh sample of flower. The results suggest that Phlogacanthus thyrsiflorus is a natural source of antioxidants.