| The influence of stereochemistry of antioxidants and flavonols on oxidation processes in a model wine system: ascorbic acid, erythorbic acid, +-catechin and (-)-epicatechin. | |
| | |
MedLine Citation:
|
PMID: 20039675 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
The stereochemical influence of antioxidant and flavanol compounds on oxidation processes in a model wine system was studied. The diastereoisomers, ascorbic acid and erythorbic acid, were used as antioxidants in a model wine system containing either (+)-catechin or (-)-epicatechin as the oxidizable flavanol compound. Samples were stored at 45 degrees C for a period of 14 days and analyzed by UV/visible spectrometry, CIELab, UPLC-PDA, and LC-MS. The results showed that less brown oxidative coloration occurred for samples with erythorbic acid for a given flavanol compound, while (+)-catechin provided less yellow coloration for a given antioxidant. Although erythorbic acid was degraded faster than ascorbic acid, it was associated with less decay in the accompanying flavanol compound. Xanthylium cation pigments were identified as the major contributor to color development. Furthermore, the production of pigment precursors, previously identified as furanone-substituted flavanols, was confirmed in all cases and their corresponding xanthylium cation pigments were lower in the presence of erythorbic acid than ascorbic acid. The results demonstrate that erythorbic acid is more efficient at minimizing oxidative color development than ascorbic acid in the model wine system. |
| | |
Authors:
|
Andrew C Clark; Jochen Vestner; C?lia Barril; Chantal Maury; Paul D Prenzler; Geoffrey R Scollary |
Related Documents
:
|
7843795 - Administration of large doses of vitamin c does not decrease oxidant-induced lung lipid... 8988625 - Comparison of the response of serum ceruloplasmin and cholesterol, and of tissue ascorb... 8951425 - Iron (ii) ions induced oxidation of ascorbic acid and glucose. 8706855 - Gluconeogenesis from ascorbic acid: ascorbate recycling in isolated murine hepatocytes. 8210685 - Formation of fatty acid propyl esters in liver, lung and pancreas of rats administered ... 9603365 - Broiler skin color as affected by organic acids: influence of concentration and method ... |
Publication Detail:
|
Type: Comparative Study; Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Journal of agricultural and food chemistry Volume: 58 ISSN: 1520-5118 ISO Abbreviation: J. Agric. Food Chem. Publication Date: 2010 Jan |
Date Detail:
|
Created Date: 2010-01-20 Completed Date: 2010-03-25 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 0374755 Medline TA: J Agric Food Chem Country: United States |
Other Details:
|
Languages: eng Pagination: 1004-11 Citation Subset: IM |
Affiliation:
|
National Wine and Grape Industry Centre, Charles Sturt University, Locked Bag 588, Wagga Wagga 2678, Australia. aclark@csu.edu.au |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Antioxidants
/
chemistry* Ascorbic Acid / chemistry* Catechin / chemistry* Flavonols / chemistry* Models, Chemical Oxidation-Reduction Stereoisomerism Wine / analysis |
| Chemical | |
Reg. No./Substance:
|
0/Antioxidants; 0/Flavonols; 154-23-4/Catechin; 50-81-7/Ascorbic Acid; 89-65-6/isoascorbic acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Single Domain Antibodies Are Specially Suited for Quantitative Determination of Gliadins under Denat...
Next Document: Di-d-fructose Dianhydride-Enriched Products by Acid Ion-Exchange Resin-Promoted Caramelization of d-...