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Kinetics of the appearance of cereal alkylresorcinols in pig plasma

  • Anna-Maria Linko (a1), Alastair B. Ross (a2) (a3), Afaf Kamal-Eldin (a2), Anja Serena (a4), Anna Kirstin Bjørnbak Kjær (a4), Henry Jørgensen (a4), José L. Peñalvo (a1), Herman Adlercreutz (a1), Per Åman (a2) and Knud Erik Bach Knudsen (a3) (a4)...

Abstract

Alkylresorcinols (AR) are phenolic lipids found in high amounts in wholegrain wheat and rye. They may be important as bioactive components and/or biomarkers of wholegrain wheat and rye intake. AR absorption was studied with pigs during a habitual diet and after a single meal of AR-rich diet. In study 1, four pigs were fed wholegrain rye (RD) and white wheat bread (WD) for 1 week in a cross-over design. Arterial and venous AR concentrations were determined over 540min after feeding on days 5 and 7. In study 2, four pigs were fed a synthetic, starch-based diet for 5d, and arterial and venous AR concentrations were determined over 960min after feeding a single meal of RD. In study 1, plasma AR concentrations after consuming RD peaked at 120min, remained elevated between 120 and 420min, and were re-elevated on refeeding at 480min. In study 2, AR appeared in the plasma after 60min, peaked at 180–240min, and remained elevated after 960min. The apparent elimination half-life was 3·93h, and the maximum plasma concentration was 666 (sem 35) nmol/l. Arterial and venous plasma AR concentrations were similar, suggesting that AR are absorbed via the lymphatic system. AR concentrations in pig plasma increase rapidly after a meal containing AR, and persist in plasma for at least 5d, indicating that AR may be a useful biomarker of wholegrain wheat and rye intake.

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Copyright

Corresponding author

*corresponding author: Dr Anna-Maria Linko, fax +358 9 191 25452, email Anna.Linko@helsinki.fi

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Keywords

Kinetics of the appearance of cereal alkylresorcinols in pig plasma

  • Anna-Maria Linko (a1), Alastair B. Ross (a2) (a3), Afaf Kamal-Eldin (a2), Anja Serena (a4), Anna Kirstin Bjørnbak Kjær (a4), Henry Jørgensen (a4), José L. Peñalvo (a1), Herman Adlercreutz (a1), Per Åman (a2) and Knud Erik Bach Knudsen (a3) (a4)...

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