| Abstrakt: |
Resistant starch (RS) has been associated with beneficial health effects. The purpose of this study was to estimate consumption of RS in the U.S. and to identify key dietary sources. A database of RS concentrations in foods was developed from the publicly available literature. These concentrations were linked to foods reported in 24-h dietary recalls from the 1999-2002 NHANES arid estimates of RS intake were generated. The study population included 18,305 individuals. Intakes were estimated by age/sex and race/ethnicity groups. Three estimates of RS intake were calculated for each population group: estimates based on the mean RS concentrations identified in the literature; estimates based on the minimum RS concentration reported for each food, and estimates based on the maximum RS concentration reported for each food. Food sources of RS were ranked based on mean RS concentrations. Americans aged >1 y were estimated to consume 4.9 g/d RS based on mean RS concentrations, with a range of 2.8 to 8.0 g/d based on minimum and maximum values. Mean RS intakes by non-Hispanic whites, non-Hispanic blacks and Mexican Americans were 4.6, 4.7, and 5.3 g/d, respectively. Breads, grain products (mainly pasta and rice) and vegetables each contributed 19-21% to the total daily intake of RS, while fruit (mainly bananas) contributed 14%, and legumes provided 9% of the total estimated RS intake. [ABSTRACT FROM AUTHOR] |
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