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Phenolic Antioxidants Isolated from the Flowers of Osmanthus fragrans

Department of Food Nutrition, Chung Hwa University of Medical Technology, No.89, Wenhua 1st St., Rende Dist., Tainan City 71703, Taiwan
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Molecules 2012, 17(9), 10724-10737; https://doi.org/10.3390/molecules170910724
Received: 21 July 2012 / Revised: 21 August 2012 / Accepted: 5 September 2012 / Published: 7 September 2012
(This article belongs to the Section Natural Products Chemistry)
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. View Full-Text
Keywords: Osmanthus fragrans; Oleaceae; antioxidative activity; DPPH scavenging activity; H2O2 scavenging ability; phenolic antioxidant Osmanthus fragrans; Oleaceae; antioxidative activity; DPPH scavenging activity; H2O2 scavenging ability; phenolic antioxidant
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MDPI and ACS Style

Hung, C.-Y.; Tsai, Y.-C.; Li, K.-Y. Phenolic Antioxidants Isolated from the Flowers of Osmanthus fragrans. Molecules 2012, 17, 10724-10737. https://doi.org/10.3390/molecules170910724

AMA Style

Hung C-Y, Tsai Y-C, Li K-Y. Phenolic Antioxidants Isolated from the Flowers of Osmanthus fragrans. Molecules. 2012; 17(9):10724-10737. https://doi.org/10.3390/molecules170910724

Chicago/Turabian Style

Hung, Chien-Ya, Yu-Cheng Tsai, and Kuo-Yu Li. 2012. "Phenolic Antioxidants Isolated from the Flowers of Osmanthus fragrans" Molecules 17, no. 9: 10724-10737. https://doi.org/10.3390/molecules170910724

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