EVALUATION OF THE ANTIOXIDANT ACTIVITIES OF TWO CULTIVARS OF SWEET POTATO (IPOMOEA HATATAS L.)

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HESAM F.; BALALI G.R.; SEYEDAIN ARDEBILI S.M.; TAHERI TEHRANI R.; AMINAFSHAR M.

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Journal: Journal of Food Technology and Nutrition Year:2012 | Volume:9 | Issue:2 (34) Page(s): 83-90

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Title

EVALUATION OF THE ANTIOXIDANT ACTIVITIES OF TWO CULTIVARS OF SWEET POTATO (IPOMOEA HATATAS L.)

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Keywords

ANTIOXIDANT ACTIVITYQ3

SWEET POTATOQ3

TOTAL PHENOLIC CONTENTQ3

Abstract

Introduction: Studies concerned with the plant metabolites such as tannins, polyphenols and alkaloids have shown that due to their structure are able to act as antioxidants and be employed in various applications even for curing diseases in the future. The aim of this study was the evaluation of the antioxidant activities of phenolic compounds present in the methanolic extracts of two cultivars of SWEET POTATO In Iran.Materials and Methods: Total phenolic compound were determined by the Folin-Ciocalteu method. The antioxidant activities of phenolic compounds present in the samples were determined by the inhibition of linoleic acid oxidation in thiocyanate system and DPPH assay based on the concentration of the scavenging action of free radicals production.Results: TOTAL PHENOLIC CONTENTs of two SWEET POTATO cultivars (red and white) were estimated at 108 and 174 mg/100g as Gallic acid equivalent (GAE) based on dry weight, respectively.The extracts of red and white SWEET POTATO cultivars had 95 and 96% inhibitory action in inhibition of linoleic acid oxidation, and EC50 value 11.64 and 12.97 mg GA/ml, in free radical scavenging system. Alpha tocopherol had 85% inhibitory action and the EC50 value=12.61 mg GA/ml for free radical scavenging Conclusion: According to the results of this research, the white cultivar had higher phenolic content than red cultivar. There was significant differents between the antioxidant activities of SWEET POTATO extracts and alpha tocopherol (p<0.05), also, SWEET POTATO extracts had similar radical scavenging activity to alpha tocopherol. Significant (p<0.01) negative correlation was observed between TOTAL PHENOLIC CONTENT and the EC50 for DPPH radical scavenging, nor between phenolic content and total ANTIOXIDANT ACTIVITY.

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APA: Copy

HESAM, F., BALALI, G.R., SEYEDAIN ARDEBILI, S.M., TAHERI TEHRANI, R., & AMINAFSHAR, M.. (2012). EVALUATION OF THE ANTIOXIDANT ACTIVITIES OF TWO CULTIVARS OF SWEET POTATO (IPOMOEA HATATAS L.). JOURNAL OF FOOD TECHNOLOGY AND NUTRITION, 9(2 (34)), 83-90. SID. https://sid.ir/paper/143305/en

Vancouver: Copy

HESAM F., BALALI G.R., SEYEDAIN ARDEBILI S.M., TAHERI TEHRANI R., AMINAFSHAR M.. EVALUATION OF THE ANTIOXIDANT ACTIVITIES OF TWO CULTIVARS OF SWEET POTATO (IPOMOEA HATATAS L.). JOURNAL OF FOOD TECHNOLOGY AND NUTRITION[Internet]. 2012;9(2 (34)):83-90. Available from: https://sid.ir/paper/143305/en

IEEE: Copy

F. HESAM, G.R. BALALI, S.M. SEYEDAIN ARDEBILI, R. TAHERI TEHRANI, and M. AMINAFSHAR, “EVALUATION OF THE ANTIOXIDANT ACTIVITIES OF TWO CULTIVARS OF SWEET POTATO (IPOMOEA HATATAS L.),” JOURNAL OF FOOD TECHNOLOGY AND NUTRITION, vol. 9, no. 2 (34), pp. 83–90, 2012, [Online]. Available: https://sid.ir/paper/143305/en

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