Document Detail

Genotype and environmental variation in phenolic content, phenolic acid composition, and antioxidant activity of hard spring wheat.
MedLine Citation:
PMID:  16478246     Owner:  NLM     Status:  MEDLINE    
The health-promoting effects of whole-grain wheat likely derive from phenolic compounds and other antioxidants that also make wheat a potential source of functional food ingredients. The objective of this study was to determine the effects of genotype and growing environment on the phenolic contents and antioxidant activities of alcohol-soluble extracts from commercial wheat cultivars. Total phenolic contents (TPCs), antioxidant activities (AOAs), and concentrations of six phenolic acids were measured in six red- and white-grained hard spring wheat genotypes grown at four diverse locations in Western Canada during the 2003 crop year. There were significant differences among genotypes and environments for TPC, AOA, and concentrations of all the phenolic acids measured. The predominant indicators of antioxidant potential, i.e., TPC, AOA, and ferulic acid (FA) concentration were highly intercorrelated (r > 0.72). For these indices, the Canada Western (CW) Red Spring wheat cultivars Neepawa and AC Elsa had the highest levels, whereas an analogous CW hard white spring wheat cultivar, AC Snowbird, had the lowest levels. Grain color did not appear to be a factor in the expression of antioxidant-related parameters. For both TPC and AOA, as well as for vanillic acid, syringic acid, and ferulic acid, environmental effects were considerably larger than genotype effects. Neither growing temperature nor rainfall from anthesis to maturity appeared to be related to the environmental variation that was observed. Genotype x environment interaction was small for all parameters compared with genotype and location effects and was significant only for TPC. Genotype variation for antioxidant properties indicates that it would be possible to select for these quantitative traits in a breeding program. However, the significant environmental variation observed would delay and/or complicate this process.
Archie Mpofu; Harry D Sapirstein; Trust Beta
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of agricultural and food chemistry     Volume:  54     ISSN:  0021-8561     ISO Abbreviation:  J. Agric. Food Chem.     Publication Date:  2006 Feb 
Date Detail:
Created Date:  2006-02-15     Completed Date:  2006-04-06     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:  1265-70     Citation Subset:  IM    
Department of Food Science, University of Manitoba, Winnipeg, Manitoba, R3T 2N2 Canada.
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MeSH Terms
Antioxidants / analysis*,  pharmacology
Hydroxybenzoic Acids / analysis*
Phenols / analysis*
Triticum / chemistry*,  genetics,  growth & development
Reg. No./Substance:
0/Antioxidants; 0/Hydroxybenzoic Acids; 0/Phenols; 29656-58-4/phenolic acid

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

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