Document Detail


Stability of copigmented anthocyanins and ascorbic acid in a grape juice model system.
MedLine Citation:
PMID:  15631508     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The stability of red grape anthocyanins (Vitis vinifera) was evaluated in a model juice system during normal (25 degrees C) and accelerated storage (35 degrees C) in the presence of ascorbic acid. Rosemary polyphenolic cofactors (0, 0.2, and 0.4% v/v) were evaluated as anthocyanin stabilizing agents. Cofactor addition resulted in concentration-dependent hyperchromic (up to 178%) and bathochromic (up to 23 nm) shifts, indicating a more intense red coloration of the models. Anthocyanin and ascorbic acid degradation followed first-order kinetics during storage. Results showed that copigmented treatments underwent a lower conversion of L-ascorbic acid into dehydroascorbic acid during storage when compared to the control, favorably impacting the vitamin retention of these models. Copigmentation did not affect anthocyanin degradation in the absence of ascorbic acid but in its presence aided to retain a higher anthocyanin content than the control. This study indicated that the addition of anthocyanin cofactors could be used to reduce the pigment and vitamin degradation while masking detrimental color changes in anthocyanin containing products.
Authors:
Carmen H Brenes; David Del Pozo-Insfran; Stephen T Talcott
Related Documents :
230938 - Ascorbic acid deficiency and hypertrophic osteodystrophy in the dog: a rebuttal.
15616328 - Interaction of bismuth subsalicylate with fruit juices, ascorbic acid, and thiol-contai...
6500848 - An in vitro effect of ascorbate on the spontaneous reduction of sodium nitrite concentr...
46758 - Effects of extracts of rat tissues on the action of bleomycin.
9458768 - Hepatic uptake of hippurate: a multiple-indicator dilution, perfused rat liver study.
7171658 - An effective method for measuring salivary lithium in patients on anticholinergic drugs.
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.    
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  53     ISSN:  0021-8561     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2005 Jan 
Date Detail:
Created Date:  2005-01-05     Completed Date:  2005-03-02     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0374755     Medline TA:  J Agric Food Chem     Country:  United States    
Other Details:
Languages:  eng     Pagination:  49-56     Citation Subset:  IM    
Affiliation:
Department of Food Technology, ITESM-Campus Monterrey, E. Garza Sada 2501 Sur, C.P. 64849, Monterrey, N.L., Mexico. chbrenes@itesm.mx
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Anthocyanins / analysis*
Ascorbic Acid / analysis*
Beverages / analysis
Drug Stability
Food Preservation
Fruit / chemistry*
Kinetics
Pigments, Biological / analysis*
Time Factors
Vitis / chemistry*
Chemical
Reg. No./Substance:
0/Anthocyanins; 0/Pigments, Biological; 50-81-7/Ascorbic Acid

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


Previous Document:  Effect of pectolytic enzyme preparations on the phenolic composition and antioxidant activity of asp...
Next Document:  Antibacterial activity of Cuminum cyminum L. and Carum carvi L. essential oils.