Phenolic antioxidants isolated from the flowers of Osmanthus fragrans.

نویسندگان

  • Chien-Ya Hung Hung
  • Yu-Cheng Tsai
  • Kuo-Yu Li
چکیده

O. fragrans has slightly less antioxidative activity than green tea. Five phenolic compounds, tyrosyl acetate (1), (+)-phillygenin (2), (8E)-ligustroside (3), rutin (4), and verbascoside (5), were isolated from the CHCl3 sub-extract of O. fragrans. The structures were elucidated by interpreting their spectral data. Evaluation of the antioxidative property of the isolated (+)-phillygenin (2), rutin (4), and verbascoside (5) revealed strong DPPH radical scavenging activity, with IC50 values of 19.1, 10.3, and 6.2 μM, respectively. These isolates also exhibited an H2O2 scavenging ability, with IC50 values of 10.5, 23.4, and 13.4 μM, respectively.

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عنوان ژورنال:
  • Molecules

دوره 17 9  شماره 

صفحات  -

تاریخ انتشار 2012