Molecules 2012, 17(9), 10724-10737; doi:10.3390/molecules170910724
Article

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
* Author to whom correspondence should be addressed.
Received: 21 July 2012; in revised form: 21 August 2012 / Accepted: 5 September 2012 / Published: 7 September 2012
(This article belongs to the Section Natural Products)
PDF Full-text Download PDF Full-Text [267 KB, uploaded 7 September 2012 08:49 CEST]
Abstract: 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.
Keywords: Osmanthus fragrans; Oleaceae; antioxidative activity; DPPH scavenging activity; H2O2 scavenging ability; phenolic antioxidant

Article Statistics

Load and display the download statistics.

Citations to this Article

Cite This Article

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.

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.

Chicago/Turabian Style

Hung, Chien-Ya; Tsai, Yu-Cheng; Li, Kuo-Yu. 2012. "Phenolic Antioxidants Isolated from the Flowers of Osmanthus fragrans." Molecules 17, no. 9: 10724-10737.

Molecules EISSN 1420-3049 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert