EVALUATION OF ANTIOXIDANT POTENTIAL OF HOPEA PONGA BARK EXTRACTS.
Chakkere Shivamadhu Madhu, Kaythegowdanadoddi Srinivas Balaji, Basavaraju Puttalingaiah and Shankar Jayarama*
ABSTRACT
Hopea ponga, an ethanomedicinal plant which is known to its wide
variety of medicinal value in the folk medicine. In this paper, we
demonstrated the antioxidant potential of Hopea ponga bark extracts
by using different solvent system. Crude extracts of Hopea ponga were
used perform an invitro antioxidant assays such as DPPH, Ferric ion
reducing capacity, phosphomolybdenum and H2O2 activity. Among
these extracts, acetone extracts posses a promising antioxidant activity
followed by water>methanol>ethyl acetate> alcohol against standard,
L-ascorbic acid. At 100μg concentration acetone shows 96.03% &
96.45% of inhibition in DPPH radical scavenging activity and H2O2
activity respectively. Further study requires elucidating / determining the active principles
present in the plant.
Keywords: Hopea ponga, free radicals, DPPH, phytochemicals, etc.
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