VARIATION IN ANTIOXIDANT POTENTIAL OF CURCUMA LONGA L. COLLECTED FROM DIFFERENT ECOLOGICAL NICHES OF WESTERN HIMALAYAN REGION
Journal Title: International Journal of Pharmacy and Pharmaceutical Sciences - Year 2015, Vol 7, Issue 7
Abstract
Objective: The present study aims to evaluate the nutritional content and antioxidant activities of twenty accessions of turmeric rhizome from various locations of Uttarakhand.Methods: The antioxidant activity was evaluated by different method viz; DPPH radical scavenging activity, ferric reducing antioxidant power assay (FRAP), Hydroxyl radical scavenging activity, Nitric Oxide (NO) scavenging activity, Superoxide anion radical scavenging activity and nutritional value viz; total phenolic content, total flavonoid content, total ortho-dihydroxy phenols, total ascorbic acid content and total antioxidant capacity.Results: Alcoholic extracts of different turmeric rhizomes showed wide variation in abilities to scavenge nitric oxide, hydroxyl, superoxide free radical, DPPH with IC50 values in the range of 39.03-76.14, 39.77-72.85, 43.77-77.13, 64.38-271.95 µg/ml and FRAP value 19.54-54.84 µmole. The total phenolic content, total flavonoid content, total ortho-dihydroxy phenols, total ascorbic acid content and total antioxidant capacity of different alcoholic extracts of rhizomes were found in the range of 11.19-51.49, 6.35-30.95, 0.93-8.12, 0.14-1.29 and 27.44-94.78 mg/g respectively.Conclusion: The alcoholic extract of different accessions of Curcuma longa L. has shown excellent biochemical and antioxidant potential and therefore refers as an important natural source of antioxidant.Â
Authors and Affiliations
Neelam Arya, Om Prakash, A. K. Verma, Vivekanand .
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