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Cited by 123Free Radicals and AntioxidantsPhytochemicals and Antioxidant ActivitiesAntioxidant Activity and Oxidative Stress

The DOI matches its Crossref record.

Radical Scavenging Action and Its Mode in Procyanidins B-1 and B-3 from Azuki Beans to Peroxyl Radicals

Ariga, Toshiaki, Hamano, Mitsutoshi·1990·Agricultural and Biological Chemistry
DOI 10.1080/00021369.1990.10870369
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Abstract

Procyanidins B-1 and B-3 from azuki beans showed remarkable scavenging activities, especially to hydrophilic radicals. The inhibition rate constants for the scavenging of hydrophilic peroxyl radicals generated from 2,2′-azobis(2-amidinopropane)hydrochloride in aqueous media were calculated at 37°C to be kinh = 6.0 × 104 m−1s−1, 5.9 × 104 m−1 s−1, 2.7 × 104 m −1 s−1, 5.0 × 104 m−1 s−1 and 1.1 × 105 m−1 s−1, and the stoichiometric factors as n = 8.4, 8.0, 3.7, 1.2 and 1.7 for procyanidin B-1, procyanidin B-3, (+)-catechin, ascorbic acid and α-tocopherol, respectively. Thus, the dimeric procyanidin molecule could trap eight radicals. The production and structures of procyanidin B-3 radicals are discussed on the basis of the ESR spectra observed by autoxidation of procyanidin B-3 in an aqueous alkaline methanol solution.

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Metadata

Authors
Ariga, T., & Hamano, M.
Affiliations
Kikkoman (Japan) (JP)
Venue
Agricultural and Biological Chemistry
Publisher
Oxford University Press (OUP)
Published
1990-10
Volume
54
Issue
10
Pages
2499-2504
ISSN
0002-1369 (ISSN-L)
DOI
10.1080/00021369.1990.10870369
OpenAlex
W1494529440
Cited by
123
References
0
Citations by year
2025: 3 · 2022: 8 · 2021: 3 · 2020: 3 · 2019: 4 · 2018: 2 · 2017: 3 · 2016: 2 · 2015: 7 · 2014: 5 · 2013: 7 · 2012: 2
FWCI
0.91
Type
journal article
Language
en
Open access
closed
Locations
Agricultural and Biological Chemistry (publishedVersion)
Topics
  • Physical Sciences › Chemistry › Organic Chemistry › Free Radicals and Antioxidants
  • Health Sciences › Medicine › Biochemistry (medical) › Phytochemicals and Antioxidant Activities
  • Health Sciences › Medicine › Biochemistry (medical) › Antioxidant Activity and Oxidative Stress
Keywords
procyanidins, Vigna angularis, free radical scavenging, peroxy radicals, inhibition rate constant, stoichiometric factor, radical trapping, catechins, vitamin C, alpha-tocopherol, autoxidation, electron spin resonance

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