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KMID : 1024520170260080903
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Journal of the Environmental Sciences
2017 Volume.26 No. 8 p.903 ~ p.911
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Comparison of Flavonoid Content and Antioxidant Activities of Peel Extracts from Gardenia jasminoides Ellis by Various Solvents
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Jin Dong-Hyeok
Oh Da-Young
Lee Young-Guen
Kang Dong-Soo
Kim Han-Soo
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Abstract
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The purpose of this study was to measure the bioactivity and antioxidant activity of peel from Gardenia jasminoides fructus Ellis (GJE) in Namhae, Korea, following some established methods. CM (Chloroform:Methanol, 2:1, v/v), 70% ethanol, and n-butanol extracts were collected. Flavonoid content and value as a functional food ingredient of GJE peel was investigated through assessing antioxidant [DPPH (1,1'-diphenyl-2-picrylhydrazyl), ABTS (2,2-azino-bis-3-ethylbenzothiazoline-6-sulfonic acid)], and hydroxyl radical scavenging activities; superoxide dismutase like ability; ferrous ion-chelating capacity; and tannin content by solvent extraction. Solvent extract antioxidant activities significantly increased (p<0.05) at increasing concentrations (0.2, 0.4, 0.6 mg/mL). GJE peel extracts were less active than the positive control [ascorbic acid, BHA (butylated hydroxyanisole), and EDTA (ethylenediaminetetraacetic acid disodium salt dihydrate)]. Based on the results of this study, GJE peel could be used as a natural antioxidant source due to its high antioxidant activity and bioactive compound content.
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KEYWORD
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Gardenia jasminoides fructus Ellis peel, Antioxidant activity, Tannin, Flavonoid
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