Next Article in Journal
Synthesis and Sensory Evaluation of ent-Kaurane Diterpene Glycosides
Previous Article in Journal
Protective Effect of Polyphenols Extract of Adlay (Coix lachryma-jobi L. var. ma-yuen Stapf) on Hypercholesterolemia-Induced Oxidative Stress in Rats
Article Menu

Export Article

Open AccessArticle
Molecules 2012, 17(8), 8898-8907; doi:10.3390/molecules17088898

The Photodegradation of Quercetin: Relation to Oxidation

Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Via F. Marzolo 5, 35131 Padova, Italy
Author to whom correspondence should be addressed.
Received: 2 May 2012 / Revised: 13 July 2012 / Accepted: 21 July 2012 / Published: 26 July 2012
(This article belongs to the Section Natural Products)
View Full-Text   |   Download PDF [232 KB, uploaded 18 June 2014]   |  


The photostability of quercetin in alcoholic solutions was studied. Both UVA and UVB light induced degradation of quercetin, yielding a single product 1 deriving from oxidation and addition of an alcohol molecule to the 2,3 double bond. The same mechanism operated when quercetin was dissolved in alkaline solutions, and again a product 2 due to oxidation and addition of water was characterized. Comparison with quercetin analogs confirmed that, despite the presence of five hydroxy groups in quercetin, those in positions 3, 3′, and 4′ are mainly involved in the antioxidant activity of the compound , as well as in its photolability.
Keywords: quercetin; photostability; photodegradation quercetin; photostability; photodegradation
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

Dall’Acqua, S.; Miolo, G.; Innocenti, G.; Caffieri, S. The Photodegradation of Quercetin: Relation to Oxidation. Molecules 2012, 17, 8898-8907.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]

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