In vitro microbiotic fermentation causes an extensive metabolite turnover of rye bran phytochemicals

Kati Hanhineva (Corresponding Author), Anna-Marja Aura, Ilana Rogachev, Sanni Matero, Thomas Skov, Asaph Aharoni, Kaisa Poutanen, Hannu Mykkänen

    Research output: Contribution to journalArticleScientificpeer-review

    16 Citations (Scopus)


    The human gut hosts a microbial community which actively contributes to the host metabolism and has thus remarkable effect on our health. Intestinal microbiota is known to interact remarkably with the dietary constituents entering the colon, causing major metabolic conversions prior to absorption. To investigate the effect of microbial metabolism on the phytochemical pool of rye bran, we applied an in vitro simulated colonic fermentation where samples were collected with intervals and analyzed by LC-MS based non-targeted metabolite profiling. The analyses revealed extensive metabolic turnover on the phytochemical composition of the bran samples, and showed effects on all the metabolite classes detected. Furthermore, the majority of the metabolites, both the precursors and the conversion products, remained unidentified indicating that there are numerous yet unknown phytochemicals, which can potentially affect on our health. This underlines the importance of comprehensive profiling assays and subsequent detailed molecular investigations in order to clarify the effect of microbiota on phytochemicals present in our everyday diet.
    Original languageEnglish
    Article numbere39322
    Number of pages10
    JournalPLoS ONE
    Issue number6
    Publication statusPublished - 2012
    MoE publication typeA1 Journal article-refereed


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