Article

Isolation and characterization of phenolic antioxidants from Plantago herb.

College of Pharmaceutical Sciences, Matsuyama University, Matsuyama, Ehime, Japan.
Molecules (impact factor: 2.39). 01/2012; 17(5):5459-66. DOI:10.3390/molecules17055459 pp.5459-66
Source: PubMed

ABSTRACT Seven phenolic compounds, including a new phenylethanoid glycoside, were isolated from the ethyl acetate fraction of an aqueous ethanol extract of Plantago Herb (whole part of Plantago asiatica L.), which showed significant antioxidative activity. The new compound was characterized as 2-(3,4-dihydroxyphenyl)ethyl 3-O-β-D-allopyranosyl-6-O-caffeoyl-β-D-glucopyranoside on the basis of spectral and chemical evidence, and its antioxidant activity was comparable to that of tea catechins.

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Keywords

2-(3,4-dihydroxyphenyl)ethyl 3-O-β-D-allopyranosyl-6-O-caffeoyl-β-D-glucopyranoside
 
aqueous ethanol
 
ethyl acetate fraction
 
new phenylethanoid glycoside
 
phenolic compounds
 
Plantago asiatica L
 
tea catechins
 

Yoshiaki Amakura