Inter-individual variability in the production of flavan-3-ol colonic metabolites: Preliminary elucidation of urinary metabotypes

Pedro Mena, Iziar A Ludwig, Virginia B Tomatis, Animesh Acharjee, Luca Calani, Alice Rosi, Furio Brighenti, Sumantra Ray, Julian L Griffin, Les J Bluck, Daniele Del Rio

Research output: Contribution to journalArticle

20 Citations (Scopus)

Abstract

Purpose
There is much information on the bioavailability of (poly)phenolic compounds following acute intake of various foods. However, there are only limited data on the effects of repeated and combined exposure to specific (poly)phenol food sources and the inter-individual variability in their bioavailability. This study evaluated the combined urinary excretion of (poly)phenols from green tea and coffee following daily consumption by healthy subjects in free-living conditions. The inter-individual variability in the production of phenolic metabolites was also investigated.

Methods
Eleven participants consumed both tablets of green tea and green coffee bean extracts daily for 8 weeks and 24-h urine was collected on five different occasions. The urinary profile of phenolic metabolites and a set of multivariate statistical tests were used to investigate the putative existence of characteristic metabotypes in the production of flavan-3-ol microbial metabolites.

Results
(Poly)phenolic compounds in the green tea and green coffee bean extracts were absorbed and excreted after simultaneous consumption, with green tea resulting in more inter-individual variability in urinary excretion of phenolic metabolites. Three metabotypes in the production of flavan-3-ol microbial metabolites were tentatively defined, characterized by the excretion of different amounts of trihydroxyphenyl-γ-valerolactones, dihydroxyphenyl-γ-valerolactones, and hydroxyphenylpropionic acids.

Conclusions
The selective production of microbiota-derived metabolites from flavan-3-ols and the putative existence of characteristic metabotypes in their production represent an important development in the study of the bioavailability of plant bioactives. These observations will contribute to better understand the health effects and individual differences associated with consumption of flavan-3-ols, arguably the main class of flavonoids in the human diet.
Original languageEnglish
Pages (from-to)1529-1543
Number of pages15
JournalEuropean Journal of Nutrition
Volume58
Issue number4
DOIs
Publication statusPublished - 3 Apr 2018

Keywords

  • Polyphenols
  • Green tea catechins
  • Coffee caffeoylquinic acids
  • Colonic microbiota
  • Urinary phenotype
  • Metabotypes

Fingerprint Dive into the research topics of 'Inter-individual variability in the production of flavan-3-ol colonic metabolites: Preliminary elucidation of urinary metabotypes'. Together they form a unique fingerprint.

  • Cite this

    Mena, P., Ludwig, I. A., Tomatis, V. B., Acharjee, A., Calani, L., Rosi, A., Brighenti, F., Ray, S., Griffin, J. L., Bluck, L. J., & Del Rio, D. (2018). Inter-individual variability in the production of flavan-3-ol colonic metabolites: Preliminary elucidation of urinary metabotypes. European Journal of Nutrition, 58(4), 1529-1543. https://doi.org/10.1007/s00394-018-1683-4