Bioavailability and metabolism of ccompounds from wholegrain wheat and aleurone‐rich wheat bread

Bresciani, L., Scazzina, F., Leonardi, R., Dall’Aglio, E., Newell, M., Dall’Asta, M., Melegari, C., Ray, S., Brightenti, F. and Del Rio, D. 2016. Bioavailability and metabolism of ccompounds from wholegrain wheat and aleurone‐rich wheat bread. Molecular Nutrition & Food Research. 60 (11), pp. 2343-2354. doi:10.1002/mnfr.201600238

TitleBioavailability and metabolism of ccompounds from wholegrain wheat and aleurone‐rich wheat bread
TypeJournal article
AuthorsBresciani, L.
Scazzina, F.
Leonardi, R.
Dall’Aglio, E.
Newell, M.
Dall’Asta, M.
Melegari, C.
Ray, S.
Brightenti, F.
Del Rio, D.
Abstract

Scope: This work aimed at investigating absorption, metabolism and bioavailability of phenolic compounds after consumption of wholegrain bread or bread enriched with an aleurone fraction. Methods and results: Two commercially available breads were consumed by 15 participants on three occasions and matched for either the amount of ferulic acid in the bread or the amount of bread consumed. Urine was collected for 48 h from all the volunteers for phenolic metabolite quantification. Blood samples were collected for 24 h following bread consumption in 5 participants. A total of 12 and 4 phenolic metabolites were quantified in urine and plasma samples, respectively. Metabolites were sulfate and glucuronic acid conjugates of phenolic acids, and high concentrations of ferulic acid-4’-O-sulfate, dihydroferulic acid-4’-O-sulfate and dihydroferulic acid-O-glucuronide were observed. The bioavailability of ferulic acid was significantly higher from the aleurone-enriched bread when all ferulic acid metabolites were accounted for.Conclusions: The study shows that low amounts of aleurone-enriched bread resulted in equivalent plasma levels of ferulic acid as wholegrain bread. This could suggest that, if the absorbed phenolic metabolites after wholegrain product intake exert health benefits, equal levels could be reached through the consumption of lower doses of refined products enriched in aleurone fraction.

KeywordsBioavailability
metabolism
phenolic
aleurone
JournalMolecular Nutrition & Food Research
Journal citation60 (11), pp. 2343-2354
ISSN1613-4125
Year2016
PublisherWiley
Accepted author manuscript
Digital Object Identifier (DOI)doi:10.1002/mnfr.201600238
PubMed ID27273424
Web address (URL)https://onlinelibrary.wiley.com/doi/pdf/10.1002/mnfr.201600238
Publication dates
Published07 Jun 2016

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