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Comparison of flavonoid intake assessment methods.
Kerry L Ivey1, Kevin Croft, Richard L Prince
1Harvard T. H. Chan School of Public Health, Department of Nutrition, Boston, USA. kivey@hsph.harvard.edu.
Food & Function
|August 13, 2016
Summary
Dietary flavonoid intake estimates from the United States Department of Agriculture (USDA) and Phenol-Explorer (PE) databases show strong agreement for total flavonoids, flavanols, flavanones, and anthocyanidins. These databases may be interchangeable for these flavonoid subclasses in research.
Area of Science:
- Nutrition Science
- Food Chemistry
- Epidemiology
Background:
- Flavonoids, abundant in plant foods, are linked to reduced chronic disease risk.
- Current research relies on the USDA food content database for flavonoid intake assessment.
- The Phenol-Explorer (PE) database offers a newer alternative for flavonoid analysis.
Purpose of the Study:
- To compare the methodologies of the USDA and PE flavonoid databases.
- To assess the agreement between flavonoid intake estimates derived from USDA and PE data.
Main Methods:
- Utilized data from 1063 women over 75 years old.
- Calculated two separate dietary flavonoid intake estimates using USDA and PE databases.
Main Results:
- Methodological differences exist between USDA and PE databases.
- Strong agreement observed for total-flavonoid, flavanol, flavanone, and anthocyanidin intake estimates.
- Weaker agreement found for flavonol and flavone intake estimates.
Conclusions:
- USDA and PE databases provide highly correlated intake estimates for total-flavonoids, flavanols, flavanones, and anthocyanidins.
- These databases can be used interchangeably for these flavonoid subclasses in epidemiological studies.
- Differences in methodology impact agreement for flavonols and flavones, necessitating careful database selection.
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