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Quercetin: Difference between revisions
→Natural Occurrence and Derivatives
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=== Background Intake === | === Background Intake === | ||
Quercetin is one of the most abundant dietary flavonoids | Quercetin is one of the most abundant dietary flavonoids. <ref name="lpi">{{cite web|url=http://lpi.oregonstate.edu/mic/dietary-factors/phytochemicals/flavonoids|title=Flavonoids|publisher=Micronutrient Information Center, Linus Pauling Institute, Oregon State University, Corvallis, OR|date=November 2015|access-date=1 April 2018}}</ref><ref name="usda" /> Values for the estimated intake of quercetin by the U.S. population from naturally-occurring sources can also be generated using the available data on the quercetin content of foods from the flavonoid database combined with food intake data from the National Center for Health Statistics' (NCHS) National Health and Nutrition Examination Surveys (NHANES) for the years 2003-2004. Individuals that did not report consuming a naturally occurring food source for quercetin were excluded from these analyses. Total quercetin intakes from background sources are presented in the following table. Consumption of these types of foods by the total US. population resulted in estimated mean and 90th percentile all user background intakes of quercetin of 5.9 and 14.7 mg/person/day, respectively. A maximum quercetin all-user intake value of 258.2 mg/day also was generated. This value represents the highest individual reported quercetin intake from all naturallyoccurring quercetin sources and occurred in the male adult population group. Given that the quercetin content is only available for selected foods, it is likely that actual background intakes are higher than these estimates. | ||
{| class="wikitable" | {| class="wikitable" | ||
|+Summary of the Estimated Daily Background Intake of Quercetin from Naturally Occurring Sources in the United States by Population Group (2003-2004 NHANES Data and USDA Database for the Flavonoid Content of Selected Foods) <ref name="GRN341" /> | |+Summary of the Estimated Daily Background Intake of Quercetin from Naturally Occurring Sources in the United States by Population Group (2003-2004 NHANES Data and USDA Database for the Flavonoid Content of Selected Foods) <ref name="GRN341" /> | ||
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|0 to 2 | |0 to 2 | ||
|54.2 | |54.2 | ||
| | |1.9 | ||
| | |3.7 | ||
|60.2 | |60.2 | ||
|- | |- | ||
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|3 to 11 | |3 to 11 | ||
|85.5 | |85.5 | ||
| | |2.6 | ||
| | |6.3 | ||
|96.4 | |96.4 | ||
|- | |- | ||
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|79.6 | |79.6 | ||
|790 | |790 | ||
| | |4.9 | ||
|10.7 | |||
|176.8 | |176.8 | ||
|- | |- | ||
|Male Teenagers | |Male Teenagers | ||
|12 to 19 | |12 to 19 | ||
|83.9 | |83.9 | ||
| | |6.1 | ||
| | |15.1 | ||
|118.2 | |118.2 | ||
|- | |- | ||
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|20 and Up | |20 and Up | ||
|82.4 | |82.4 | ||
| | |5.7 | ||
| | |15.6 | ||
|117.5 | |117.5 | ||
|- | |- | ||
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|20 and Up | |20 and Up | ||
|84.0 | |84.0 | ||
| | |7.6 | ||
| | |17.8 | ||
|258.2 | |258.2 | ||
|- | |- | ||
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|All Ages | |All Ages | ||
|79.9 | |79.9 | ||
| | |5.9 | ||
| | |14.7 | ||
|258.2 | |258.2 | ||
|} | |} | ||