Journal article
Free fruit at workplace intervention increases total fruit intake: a validation study using 24 h dietary recall and urinary flavonoid excretion
Background/Objectives: To validate 24 h dietary recall of fruit intake by measuring the total 24 h excretion of 10 different flavonoids in 24 h urine during an intervention with free fruit at workplaces. Subjects/Methods: Employees at workplaces offering a free-fruit program, consisting of daily free and easy access to fresh fruit, and controls employees at workplaces with no free-fruit program were enrolled in this validation study (n = 103).
Dietary intake was assessed by using a 24 h dietary recall questionnaire at baseline and approximately 5 months later. Ten flavonoids, quercetin, isorhamnetin, tamarixetin, kaempferol, hesperetin, naringenin, eriodictyol, daidzein, genistein, and phloretin, were measured using HPLC-electrospray ionization-MS.
Results: The 24 h urinary excretion of total flavonoids and the estimated intake of fruits were significantly correlated (r(s) = 0.31, P
Language: | English |
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Publisher: | Nature Publishing Group UK |
Year: | 2010 |
Pages: | 1222-1228 |
ISSN: | 14765640 and 09543007 |
Types: | Journal article |
DOI: | 10.1038/ejcn.2010.130 |
ORCIDs: | Bredsdorff, Lea , Christensen, Tue and 0000-0003-0609-6317 |