Biomarkers of Meats and Potatoes Intake (MEPO)

This cross-over meal study is a four-way intervention with 12 volunteers randomized at the same time to four meals with fried meats (beef, pork, chicken and amino-acid matched non-meat control) and to four meals with potato products (boiled, chips, fries, and a control with boiled white rice) to search for biomarkers of intake.

In a two-dimensional, cross-over meal study, 12 healthy volunteers consumed in a randomized sequence four test meals: chicken, pork, beef, and a control made of egg white and pea. At the same time they were independently randomized to four starchy foods to be consumed together with the meats: boiled potatoes, fried potatoes, potato crisps or boiled white rice. Fasting and postprandial urine samples were collected to cover 48 h after each meal and samples were profiled by untargeted LC-ESI-qTOF-MS metabolomics. The profiles following the meal challenges were explored by univariate and multivariate analyses and single and combined markers of intake identified chemically by MS/MS fragmentation experiments and statistically by ROC curves and error rates as well as FDR statistics.

Subjects were randomised to four meals with meats and starchy foods in such a way that all volunteers had each meat and each starchy food once and so that all combinations of meats and starchy foods were equally common. Each volunteer was also randomised to the sequence of the meals.

It is not possible to mask foods and for the explorative analysis of results, masking is not required.

Inclusion Criteria: healthy Exclusion Criteria: non-pregnant, no abuse of alcohol or drugs, no chronic medication except p-pills

Adding samples to CUBE (www.cube.ku.dk), supporting information to the ERDA sharing system, and sample database and study data to the DASH-IN database for data sharing.

Zhou X, Ulaszewska MM, Cuparencu C, De Gobba C, Vazquez-Manjarrez N, Gurdeniz G, Chen J, Mattivi F, Dragsted LO. Urine Metabolome Profiling Reveals Imprints of Food Heating Processes after Dietary Intervention with Differently Cooked Potatoes. J Agric Food Chem. 2020 Jun 3;68(22):6122-6131. doi: 10.1021/acs.jafc.0c01136. Epub 2020 May 8.

Cuparencu C, Rinnan A, Dragsted LO. Combined Markers to Assess Meat Intake-Human Metabolomic Studies of Discovery and Validation. Mol Nutr Food Res. 2019 Sep;63(17):e1900106. doi: 10.1002/mnfr.201900106. Epub 2019 Jun 13.