2009
DOI: 10.1002/ptr.2742
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Phenolic alkaloids as a new class of antioxidants in Portulaca oleracea

Abstract: Antioxidant activities of three phenolic alkaloids, i.e., oleracein A (OA), oleracein B (OB) and oleracein E (OE), isolated from Portulaca oleracea were determined, based on scavenging activity against 1,1-diphenyl- 2-picryl-hydrazyl (DPPH) radical and inhibitory effect on hydrogen peroxide-induced lipid peroxidation in rat brain homogenates. The DPPH radical scavenging activities of these phenolic alkaloids were lower than caffeic acid but higher than ascorbic acid and alpha-tocopherol, being in the following… Show more

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Cited by 143 publications
(84 citation statements)
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“…Portulene; a diterpene [192]. Phenolic alkaloids; oleracein A, oleracein B, and oleracein E [193]. Betacyanins [194] Moderate antidiabetic activity via potent antioxidant potential in STZ-diabetic rats [195] 22 Rosaceae Crataegus aronia L. Bosc.…”
mentioning
confidence: 99%
“…Portulene; a diterpene [192]. Phenolic alkaloids; oleracein A, oleracein B, and oleracein E [193]. Betacyanins [194] Moderate antidiabetic activity via potent antioxidant potential in STZ-diabetic rats [195] 22 Rosaceae Crataegus aronia L. Bosc.…”
mentioning
confidence: 99%
“…Oleracein E (the antipode of trolline) has been reported to exhibit potent DPPH radical scavenging activity (Yang et al, 2009). Other cytotoxic compounds characterized from M. jalapa, notably the cytotoxic rotenoids mirabijalones and boeravinones have been shown to have growth inhibition effects against several cell lines (Wang et al, 2002;Xu et al, 2010).…”
Section: Discussionmentioning
confidence: 99%
“…However, few molecular mechanisms of action are known. Phenolic alkaloids such as three oleraceins was reported by (Yang et al, 2009) as a new class of antioxidants in purslane, showing a higher DPPH radical scavenging activity than ascorbic acid and alpha-tocopherol. Alpha-tocopherol, ascorbic acid, beta-carotene and glutathione in leaves of purslane exhibited higher amount than did in spinach (Simopoulos et al, 1992).…”
Section: Other Bioactives In Purslanementioning
confidence: 99%