Document Detail

Redox behaviour of verbascoside and rosmarinic acid.
MedLine Citation:
PMID:  23092164     Owner:  NLM     Status:  Publisher    
The electrochemical oxidation mechanisms of rosmarinic acid (RA) and verbascoside (VB), both caffeic acid esters with two catechol moieties, was investigated. The redox mechanism is associated with the oxidation of the catechol groups, and it was studied for a wide pH range by cyclic, differential pulse and square wave voltammetry, using a glassy carbon electrode. The voltammetric study revealed that both molecules, RA and VB, are reversibly oxidized in two successive pH-dependent steps each with the transfer of two electrons and two protons. Moreover, it was found that the first oxidation step is associated with the caffeic acid moiety, whereas the second oxidation step corresponds to the oxidation in VB of the hydroxytyrosol group and in RA of the 3,4-dihydroxyphenyl lactic acid residue.
Eric de Souza Gil; Teodor Adrian Enache; Ana Maria Oliveira-Brett
Related Documents :
24112554 - L (+)-lactic acid production by pellet-form rhizopus oryzae nrrl 395 on biodiesel crude...
20696454 - Methane production from oleate: assessing the bioaugmentation potential of syntrophomon...
2637104 - Maloalcoholic fermentation by immobilized schizosaccharomyces pombe.
22999884 - Biosynthesis of the respiratory toxin bongkrekic acid in the pathogenic bacterium burkh...
17360064 - Production in food of 1,3-pentadiene and styrene by trichoderma species.
16971584 - Mitochondrial phospholipids of rat skeletal muscle are less polyunsaturated than whole ...
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-10-18
Journal Detail:
Title:  Combinatorial chemistry & high throughput screening     Volume:  -     ISSN:  1875-5402     ISO Abbreviation:  Comb. Chem. High Throughput Screen.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-10-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9810948     Medline TA:  Comb Chem High Throughput Screen     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Departamento de Química, Faculdade de Ciências e Tecnologia, Universidade de Coimbra, 3004-535 Coimbra, Portugal.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  SAMHD1: a new contributor to HIV-1 restriction in resting CD4+ T-cells.
Next Document:  Cocos nucifera Linn. (Palmae) husk fiber ethanolic extract: antioxidant capacity and electrochemical...