Radical scavenging compounds in onion skin

H. J. Suh; J. M. Lee; J. S. Cho; Y. S. Kim; S. H. Chung

doi:10.1016/S0963-9969(99)00141-6

Radical scavenging compounds in onion skin

H. J. Suh, J. M. Lee, J. S. Cho, Y. S. Kim, S. H. Chung

Research output: Contribution to journal › Article › peer-review

82 Citations (Scopus)

Abstract

Two major flavonols (F(I) and F(II)) in onion skin were isolated. According to the ultraviolet-visible absorption spectra, F(I) and F(II) fractions were thought to be 3,5,7,3'-OH and 3 (5),7,3',4'-OH of flavonol, respectively. After acid hydrolysis of the two fractions, F(I) was found to consist of quercetin and glucose, but F(II) only contained quercetin. F(I) and F(II) were confirmed by fast atom bombardment as quercetin 4'-glucoside and quercetin, respectively. The F(I) and F(II) fractions exhibited potent radical scavenging activity against DPPH, superoxide anion (O2·^-), and hydroxyl (·OH) radicals. (C) 2000 Canadian Institute of Food Science and Technology.

Original language	English
Pages (from-to)	659-664
Number of pages	6
Journal	Food Research International
Volume	32
Issue number	10
DOIs	https://doi.org/10.1016/S0963-9969(99)00141-6
Publication status	Published - 1999 Dec

Keywords

Flavonols
Onion skin
Quercetin
Quercetin 4'-glucoside
Radical scavenger

ASJC Scopus subject areas

Food Science

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10.1016/S0963-9969(99)00141-6

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title = "Radical scavenging compounds in onion skin",

abstract = "Two major flavonols (F(I) and F(II)) in onion skin were isolated. According to the ultraviolet-visible absorption spectra, F(I) and F(II) fractions were thought to be 3,5,7,3'-OH and 3 (5),7,3',4'-OH of flavonol, respectively. After acid hydrolysis of the two fractions, F(I) was found to consist of quercetin and glucose, but F(II) only contained quercetin. F(I) and F(II) were confirmed by fast atom bombardment as quercetin 4'-glucoside and quercetin, respectively. The F(I) and F(II) fractions exhibited potent radical scavenging activity against DPPH, superoxide anion (O2·-), and hydroxyl (·OH) radicals. (C) 2000 Canadian Institute of Food Science and Technology.",

keywords = "Flavonols, Onion skin, Quercetin, Quercetin 4'-glucoside, Radical scavenger",

author = "Suh, {H. J.} and Lee, {J. M.} and Cho, {J. S.} and Kim, {Y. S.} and Chung, {S. H.}",

year = "1999",

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T1 - Radical scavenging compounds in onion skin

AU - Suh, H. J.

AU - Lee, J. M.

AU - Cho, J. S.

AU - Kim, Y. S.

AU - Chung, S. H.

PY - 1999/12

Y1 - 1999/12

N2 - Two major flavonols (F(I) and F(II)) in onion skin were isolated. According to the ultraviolet-visible absorption spectra, F(I) and F(II) fractions were thought to be 3,5,7,3'-OH and 3 (5),7,3',4'-OH of flavonol, respectively. After acid hydrolysis of the two fractions, F(I) was found to consist of quercetin and glucose, but F(II) only contained quercetin. F(I) and F(II) were confirmed by fast atom bombardment as quercetin 4'-glucoside and quercetin, respectively. The F(I) and F(II) fractions exhibited potent radical scavenging activity against DPPH, superoxide anion (O2·-), and hydroxyl (·OH) radicals. (C) 2000 Canadian Institute of Food Science and Technology.

AB - Two major flavonols (F(I) and F(II)) in onion skin were isolated. According to the ultraviolet-visible absorption spectra, F(I) and F(II) fractions were thought to be 3,5,7,3'-OH and 3 (5),7,3',4'-OH of flavonol, respectively. After acid hydrolysis of the two fractions, F(I) was found to consist of quercetin and glucose, but F(II) only contained quercetin. F(I) and F(II) were confirmed by fast atom bombardment as quercetin 4'-glucoside and quercetin, respectively. The F(I) and F(II) fractions exhibited potent radical scavenging activity against DPPH, superoxide anion (O2·-), and hydroxyl (·OH) radicals. (C) 2000 Canadian Institute of Food Science and Technology.

KW - Flavonols

KW - Onion skin

KW - Quercetin

KW - Quercetin 4'-glucoside

KW - Radical scavenger

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U2 - 10.1016/S0963-9969(99)00141-6

DO - 10.1016/S0963-9969(99)00141-6

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SN - 0963-9969

VL - 32

SP - 659

EP - 664

JO - Food Research International

JF - Food Research International

IS - 10

ER -

Radical scavenging compounds in onion skin

Abstract

Keywords

ASJC Scopus subject areas

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