RT Journal Article T1 Enrichment of Food With Tannin Extracts Promotes Healthy Changes in the Human Gut Microbiota A1 Molino, Silvia A1 Lerma-Aguilera, Alberto A1 Jiménez-Hernández, Nuria A1 Gosalbes, María José A1 Rufián-Henares, José Ángel A1 Francino, M Pilar K1 Chestnut K1 Gut microbiota K1 In vitro digestion-fermentation K1 Quebracho K1 Short chain fatty acids K1 Tannins K1 Tara K1 Aesculus K1 Microbioma gastrointestinal K1 Quebracho K1 Ácidos grasos volátiles K1 Taninos AB Food and food bioactive components are major drivers of modulation of the human gut microbiota. Tannin extracts consist of a mix of bioactive compounds, which are already exploited in the food industry for their chemical and sensorial properties. The aim of our study was to explore the viability of associations between tannin wood extracts of different origin and food as gut microbiota modulators. 16S rRNA amplicon next-generation sequencing (NGS) was used to test the effects on the gut microbiota of tannin extracts from quebracho, chestnut, and tara associated with commercial food products with different composition in macronutrients. The different tannin-enriched and non-enriched foods were submitted to in vitro digestion and fermentation by the gut microbiota of healthy subjects. The profile of the short chain fatty acids (SCFAs) produced by the microbiota was also investigated. The presence of tannin extracts in food promoted an increase of the relative abundance of the genus Akkermansia, recognized as a marker of a healthy gut, and of various members of the Lachnospiraceae and Ruminococcaceae families, involved in SCFA production. The enrichment of foods with tannin extracts had a booster effect on the production of SCFAs, without altering the profile given by the foods alone. These preliminary results suggest a positive modulation of the gut microbiota with potential benefits for human health through the enrichment of foods with tannin extracts. PB Frontiers YR 2021 FD 2021-03-16 LK http://hdl.handle.net/10668/3511 UL http://hdl.handle.net/10668/3511 LA en NO Molino S, Lerma-Aguilera A, Jiménez-Hernández N, Gosalbés MJ, Rufián-Henares JA, Francino M. Enrichment of Food With Tannin Extracts Promotes Healthy Changes in the Human Gut Microbiota. Frontiers in Microbiology. 2021 Mar 16;12:625782 DS RISalud RD Apr 11, 2025