Inter- and Intraindividual Differences in the Capacity of the Human Intestinal Microbiome in Fecal Slurries to Metabolize Fructoselysine and Carboxymethyllysine

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Abstract

The advanced glycation endproduct carboxymethyllysine and its precursor fructoselysine are present in heated, processed food products and are considered potentially hazardous for human health. Upon dietary exposure, they can be degraded by human colonic gut microbiota, reducing internal exposure. Pronounced interindividual and intraindividual differences in these metabolic degradations were found in anaerobic incubations with human fecal slurries in vitro. The average capacity to degrade fructoselysine was 27.7-fold higher than that for carboxymethyllysine, and degradation capacities for these two compounds were not correlated (R2 = 0.08). Analysis of the bacterial composition revealed that interindividual differences outweighed intraindividual differences, and multiple genera were correlated with the individuals' carboxymethyllysine and fructoselysine degradation capacities (e.g., Akkermansia, Alistipes).

Original languageEnglish
Pages (from-to)11759-11768
JournalJournal of Agricultural and Food Chemistry
Volume70
Issue number37
DOIs
Publication statusPublished - 21 Sep 2022

Keywords

  • 16S rRNA analysis
  • advanced glycation end product
  • human gut microbiota
  • interindividual differences
  • intraindividual differences
  • new approach methodologies
  • temporal variability

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