Evaluation of Antioxidant Activity of Decalepis Hamiltonii Tuberous Roots at Different Growth Stages and Determination of Antioxidant Substances (Research Article)

Author(s): Kalpana Kaloori*, Bhargavi B and Prashanti M

Abstract: An attempt has been made to evaluate the antioxidant activity in tuberous root extracts of Decalepis hamiltonii taken at different growth stages. Seeds of Decalepis hamiltonii were sown in pots and grown over a period of two years. Tuberous roots at different growth levels were collected and evaluated for antioxidant property with DPPH (2,2-diphenyl picrylhydrazyl). There is a significant difference in antioxidant activity up to 270 days of growth and thereafter there is slight decrease in antioxidant levels. There is difference between the aqueous and methanolic extracts in antioxidant activity, aqueous extracts showed high levels of antioxidant activity when compared to methanolic extracts. Both these extracts revealed high antioxidant activity within one year of tuberous root growth when compared to later growth period. Active antioxidant substances such as phenols, flavonoids, selenium, Zinc etc were present which favored the antioxidant activity. Decalepis hamiltonii is found to be potently active during the entire span of life but the initial one year of growth showed high antioxidant activity.

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