DPPH-Scavenging Activities and Structure-Activity Relationships of Phenolic Compounds
2010 ◽
Vol 5
(11)
◽
pp. 1934578X1000501
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Keyword(s):
Thirty-eight phenolic compounds (including 31 flavonoids) were examined for their DPPH radical-scavenging activities, and structure-activity relationships were evaluated. Specifically, the presence of an Ortho-dihydroxyl structure in phenolics is largely responsible for their excellent antiradical activity. 3-Hydroxyl was also essential to generate a high radical-scavenging activity. An increasing number of hydroxyls on flavones with a 3′,4′-dihydroxyl basic structure, the presence of a third hydroxyl group at C-5′, a phloroglucinol structure, glycosylation and methylation of the hydroxyls, and some other hydroxyls, for example 5-, and 7-hydroxyl in ring A, decreased the radical-scavenging activities of flavonoids and other phenolics.
2011 ◽
Vol 76
(4)
◽
pp. 491-497
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2017 ◽
Vol 12
(12)
◽
pp. 1934578X1701201
2021 ◽
Vol 9
(11)
◽
pp. 2013-2021
2008 ◽
Vol 3
(11)
◽
pp. 1934578X0800301
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2011 ◽
Vol 39
(1)
◽
pp. 104-112
◽
2012 ◽
Vol 610-613
◽
pp. 72-80
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