Next Article in Journal
Two New Pyranoxanthones from Mesua beccariana (Guttiferae)
Next Article in Special Issue
The Roles of Phytochemicals in Bronchial Asthma
Previous Article in Journal
Antiphytoviral Activity of Satureja montana L. ssp. variegata (Host) P. W. Ball Essential Oil and Phenol Compounds on CMV and TMV
Previous Article in Special Issue
Honokiol and Magnolol as Multifunctional Antioxidative Molecules for Dermatologic Disorders
Article Menu

Article Versions

Export Article

Open AccessArticle
Molecules 2010, 15(10), 6722-6732; doi:10.3390/molecules15106722

Antioxidant Activities of Caragana sinica Flower Extracts and Their Main Chemical Constituents

1
Key Laboratory of Medicinal Chemistry for Nature Resource, Ministry of Education, School of Chemical Science and Technology, Yunnan University, Kunming 650091, Yunnan, P.R. China
2
Department of Applied mathematics, Kunming University of Science and Technology, Kunming 650093, P.R. China
3
Technology Center, Hongyun-Honghe Tobacco (Group) Co. Ltd., Kunming 650202, P.R. China
*
Author to whom correspondence should be addressed.
Received: 10 August 2010 / Revised: 4 September 2010 / Accepted: 16 September 2010 / Published: 28 September 2010
(This article belongs to the Special Issue Antioxidants)
Download PDF [269 KB, 18 June 2014; original version 18 June 2014]

Abstract

The edible flowers of Caragana sinica are used in China a kind of health-promoting vegetable. In this study, the antioxidant activities of its ethanol extract, as well as its petroleum ether, ethyl acetate, n-butanol and water fractions, were evaluated through in vitro model systems including the DPPH, FRAP and β-carotene bleaching methods. Among the C. sinica flower extracts the ethyl acetate fraction was the most effective. Correlation analysis suggested that flavonoids might be the major contributors to the high antioxidant activity of this flower. Six flavonoids including quercetin (1), isoquercitrin (2), rutin (3), quercetin-3′-O-methyl-3-O-α-L-rhamnopyranosyl (1→6)-β-D-glucopyranoside (4), typhaneoside (5) and quercetin-3-O-β-D-glucopyranosyl(1→2)[α-L-rhamnopyranosyl (1→6)]-β-D-glucopyranoside (6), were isolated from this flower for the first time. Their contents were determined by a HPLC method. Compounds 3 and 4 were found to be the major flavonoids, with concentrations of 1.20 ± 0.07 and 3.94 ± 0.12 mg/g dry sample, respectively. These results demonstrated that the C. sinica flowers may be valuable natural antioxidant sources and are potentially applicable in the health food industry.
Keywords: Caragana sinica; antioxidant activity; flavonoid Caragana sinica; antioxidant activity; flavonoid
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Tai, Z.-G.; Cai, L.; Dai, L.; Sun, W.-J.; Zhe, W.; Yang, Y.-B.; Cao, Q.-E.; Ding, Z.-T. Antioxidant Activities of Caragana sinica Flower Extracts and Their Main Chemical Constituents. Molecules 2010, 15, 6722-6732.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]

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