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Plasma Alkylresorcinol Concentrations Correlate with Whole Grain Wheat and Rye Intake and Show Moderate Reproducibility over a 2- to 3-Month Period in Free-Living Swedish Adults
Uppsala universitet, Humanistisk-samhällsvetenskapliga vetenskapsområdet, Samhällsvetenskapliga fakulteten, Institutionen för kostvetenskap.
Department of Food Science; Swedish University of Argiculture Sciences, Uppsala.
Department of Food Science; Swedish University of Argiculture Sciences, Uppsala.
Department of Food Science; Swedish University of Argiculture Sciences, Uppsala.
2011 (Engelska)Ingår i: Journal of Nutrition, ISSN 0022-3166, E-ISSN 1541-6100, Vol. 141, nr 9, s. 1712-1718Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

Plasma alkylresorcinols (AR) are useful as dietary biomarkers of wheat and rye whole grain (WG) during interventions but need to be validated in free-living populations. This study estimated the medium-term reproducibility and relative validity of plasma AR as biomarkers of WG and cereal fiber intake. Seventy-two Swedish adults kept 3-d weighed food records on 2 occasions 2-3 mo apart. Of these men and women, 51 provided a fasting blood sample at the end of each occasion. In addition, 18 participants provided 3 fasting and 3 nonfasting samples for 3 consecutive days on the first and second occasions, respectively. Dietary and blood variables did not differ between the 2 occasions. Nonfasting plasma total AR concentration [210 nmol/L (95% CI: 140, 314)] was higher than fasting [99 nmol/L (95% CI: 72, 137)] (P < 0.0001). Mean WG intake was 70 ± 61 g/d (41% from rye) and the intra-class correlation coefficient was 0.44 (95% CI: 0.26, 0.63) for total WG intake and 0.47 (95% CI: 0.27, 0.67) for the fasting plasma total AR concentration, suggesting moderate reproducibility. Fasting plasma total AR moderately correlated with WG rye + wheat (r(s) = 0.53; P < 0.001) and cereal fiber intake (r(s) = 0.32; P < 0.05) when using mean values from both occasions. This suggests that plasma AR concentration in fasting samples can be used as a biomarker of rye + wheat WG intake in free-living populations with a high and consistent WG intake.

Ort, förlag, år, upplaga, sidor
Rockville Pike, Bethesda: American Society of Nutrition , 2011. Vol. 141, nr 9, s. 1712-1718
Nyckelord [sv]
fullkorn, dietär biomarkör, kostundersökningsmetodik, alkylresorsinoler, nutritions epidemiologi
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Forskningsämne
Nutrition; Kostvetenskap
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URN: urn:nbn:se:uu:diva-158099DOI: 10.3945/jn.111.139238ISI: 000294523500019OAI: oai:DiVA.org:uu-158099DiVA, id: diva2:437965
Tillgänglig från: 2011-08-31 Skapad: 2011-08-31 Senast uppdaterad: 2017-12-08Bibliografiskt granskad

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