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Antioxidative Activities and Components of Gardenia jasminoides
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치자의 항산화 활성 및 활성성분의 분리

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Type
Academic journal
Author
Hye-Jung Yang (서울과학기술대학교) Mijung Park (서울과학기술대학교) Heum Sook Lee (서울과학기술대학교)
Journal
Korean Society of Food Science and Technology Korean journal of food science and technology Vol.43 No.1 KCI Accredited Journals SCOPUS
Published
2011.2
Pages
51 - 57 (7page)

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Antioxidative Activities and Components of Gardenia jasminoides
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From the total methanolic extract of Gardenia jasminoides (Rubiaceae), various antioxidative characteristics were identified in terms of nitrite scavenging ability, 2,2’-azino-bis (3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) radical cation inhibition, superoxide dismutase (SOD)-like activity, and elongation effect of lipid peroxidation using Rancimat. After successive partitioning with n-hexane, chloroform, n-butanol, and water, potent nitrite scavenging abilities were shown in the n-butanol fraction and water fraction, and IC?? values were 183 ppm and 194 ppm, respectively. As for ABTS radical cation inhibition, the chloroform fraction was most potent and its IC?? was 159 ppm. SOD-like activity was slightly low in all of the fractions. The elongation effect of lipid peroxidation also increased dose-dependently and the antioxidative index (AI) of the total methanolic extract was 2.93 in 1000 ppm, which was more effective than 1.66 of butylated hydroxy anisol in the same concentration. The compounds Ⅰ and Ⅱ were isolated through silica gel column chromatography of the active fractions, and identified as geniposide and crocin, respectively, by ¹H-NMR spectral data. The IC?? values for the nitrite scavenging abilities of geniposide and crocin were 940 ppm and 77 ppm, respectively. In ABTS radical cation inhibition, the IC?? values of geniposide and crocin were 684 ppm and 549 ppm, respectively. And the EC?? value for SOD-like activity of crocin was 259 ppm, which was much smaller than 453 ppm by the positive control, chlorogenic acid. The EC?? value of geniposide could not be identified.

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