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KMID : 1024520190280040393
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Journal of the Environmental Sciences
2019 Volume.28 No. 4 p.393 ~ p.401
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Total Flavonoid Content and Antioxidant Activities of Turmeric (Curcuma longa L.) Extracts in Jindo Korea
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Oh Da-Young
Kim Han-Soo
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Abstract
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The present study were conducted to determine physiological activities and antioxidant effects [2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity, 2,2-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid (ABTS) radical scavenging activity, reducing power, Ferric Reducing Antioxidant Power (FRAP) and Fe2+ (ferrous ion) chelating capacity] of 70% methanol, chloroform:methanol, 2:1 volume ratio (CM) and ethyl acetate extract of turmeric (Curcuma longa L.). Bioactive compound of tannin 0.125±0.007 mg Catechin Equivalent (CE)/g dry weight. Turmeric extracts yield were 70% methanol 16.54%, CM 5.64% and ethyl acetate 4.14%, respectively. Antioxidant activity of the samples exhibited a dose-dependent increase. Results showed that extraction solvent had significant effects on total flavonoid content and antioxidant effects of ethyl acetate. But ferrous ion-chelating capacity of 70% methanol extract was higher than CM and ethyl acetate extract. From the results of this study, turmeric can be utilized as a valuable and potential nutraceutical for the functional food industry.
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KEYWORD
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Turmeric (Curcuma longa L.), Antioxidant activity, Tannin, Reducing power, Ferrous ion chelate
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