DPPH Scavenging Activity of Various Extracts of Sweet Potatoes Leaves with Varying Tubers Colors
Journal Title: International Journal of Research in Pharmacy and Science - Year 2013, Vol 3, Issue 2
Abstract
The antioxidant activities of various extracts of sweet potatoes (Ipomoea batatas) leaves with five varying tubers colors were examined by using DPPH (2.2-diphenyl-1-picrylhidrazyl) method. Determination of total flavonoid, phenolic and carotenoid were also measured for each extracts. The antioxidant activity for each extracts was reported as percentage of free radical DPPH scavenging activity. The highest antioxidant activity 97.63 %. was given by A3 (ethanolic extraxt of sample A). Sample B2 (ethyl acetate extract of sample B) contained the highest total flavonoid (59.79 g QE/100 g). Sample B3 (ethanolic extract from sample B) had the highest phenolic contents (19.64 g GAE/100 g), while the highest carotenoid 24.17 g BET/100 g was given by C2 (ethyl acetate extract of sample C). The total phenolic contents was significantly correlated with DPPH scavenging activity in sample A (leaves of red- purple tubers) with r = 0.951 and sample B (leaves of purples tubers) with r = 0.792, but no correlation in sample C, D and E. The DPPH scavenging activity in sample A was negatively correlated with total flavonoid contents (r = - 0.772), while sample B, C, D and E were no correlation. The total carotenoid contents in sample C (leaves of yellow tubers) had correlation with DPPH scavenging activity (r = 0.778) and no correlation in sample A, B, D and E.
Authors and Affiliations
Irda Fidrianny , Ari Sri Windyaswari , Komar Ruslan Wirasutisna
Keywords
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