Free fruit at workplace intervention increases total fruit intake: a validation study using 24 h dietary recall and urinary flavonoid excretion

Abstract

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 ¼ 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 ¼ 0.31, Po0.01). The dietary intake of citrus fruits and citrus juices was significantly correlated with total excretion of citrus specific flavonoids (r s ¼ 0.28, Po0.01), and orange was positively correlated with naringenin (r s ¼ 0.24, Po0.01) and hesperetin (r s ¼ 0.24, Po0.01). Phloretin in urine was correlated with apple intake (r s ¼ 0.22, Po0.01) and also with overall estimated intake of fruit (r s ¼ 0.22, Po0.01). Conclusions: This study shows that a 24 h dietary recall can be used as a valid estimate of the intake of fruits in agreement with an objective biomarker of fruit intake in free fruit at workplace interventions.

A worksite vitality intervention to improve older workers' lifestyle and vitality-related outcomes: results of a randomised controlled trial

“…The positive finding regarding fruit intake were supported by two other studies 60 61. Both offered free fruit at the workplace aimed to promote fruit intake by increasing availability and accessibility.…”

Hippuric Acid in 24-Hour Urine Collections Is a Potential Biomarker for Fruit and Vegetable Consumption in Healthy Children and Adolescents,

“…Possible biomarkers of general FV intake include carotenoids and vitamin C in plasma as well as urinary flavonoids (8). Reported correlations with different dietary assessment methods in healthy adults are mainly in the range of r = 0.3-0.4 for total urinary flavonoids (38)(39)(40) and 0.2-0.4 for total plasma or serum carotenoids (39,(41)(42)(43). For the correlation between plasma vitamin C and FV intake, a wide range (r = 0.3-0.6) is reported in the literature (43)(44)(45).…”

Risiko Menderita Kanker Dan Non Kanker Pada Pekerja Terpapar Benzena Di Home Industrysepatu Kelurahan Tambak Oso Wilangun Surabaya

“…Di dalam hati, benzena epoksida merupakan senyawa yang tidak stabil dan akan segera mengalami perubahan membentuk fenol yang akan dikeluarkan melalui urin. Oleh karena itu kadar fenol digunakan sebagai indicator biologic atas paparan benzena pada tenaga kerja (Sugiharto, 2009;Krogholm, 2010).…”