Antioxidant Activity of Methanol Extracts Obtained from Plantago Species

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• 作者：Marina Gá ; lvez ; Carmen Martí ; n-Cordero ; Peter J. Houghton ; and Marí ; a Jesú ; s Ayuso
• 刊名：Journal of Agricultural and Food Chemistry
• 出版年：2005
• 出版时间：March 23, 2005
• 年：2005
• 卷：53
• 期：6
• 页码：1927 - 1933
• 全文大小：83K
• 年卷期：v.53,no.6(March 23, 2005)
• ISSN：1520-5118

文摘

Antioxidative activities of methanol extracts from five Plantago species (P. afra, P. coronopus, P.lagopus, P. lanceolata, and P. serraria) were characterized by the DPPH scavenging test and theinhibition of Fe²⁺/ascorbate-induced lipid peroxidation on bovine brain liposomes. All extracts showedantioxidant activity in both methods. Whereas P. serraria exhibited the strongest activity as a DPPHscavenger, P. lanceolata and P. serraria were found to be the most active in the lipid peroxidationinhibition assay. The extracts were investigated regarding their composition by different colorimetrictechniques, such as the content of total phenolic compounds by the Folin-Ciocalteu assay, flavonoidsby AlCl₃ reagent, phenylpropanoid glycosides (PPGs) by Arnow reagent, and iridoids by Trim-Hillassay. A high correlation was found between the scavenging potency and the total phenolic andphenylpropanoid content of the extracts but not between the lipid peroxidation potency and the extractcomposition. P. serraria is presented as a possible new source of natural antioxidants.Keywords: Plantago; antioxidant activity; DPPH; lipid peroxidation; phenolic compounds; phenylpropanoid glycosides; flavonoids