@article{jfnr20241241,
author={{Sugawara, Kanako and Hu, Ailing and Yamaguchi, Takuji and Tabuchi, Masahiro and Ikarashi, Yasushi and Kobayashi, Hiroyuki},
title={Banana Intake Reduces Oral Cavity-Derived Bacteria in the Gut Microbiota},
journal={Journal of Food and Nutrition Research},
volume={12},
number={4},
pages={168--172},
year={2024},
url={https://pubs.sciepub.com/jfnr/12/4/1},
issn={2333-1240},
abstract={Bananas, rich in prebiotics, dietary fibre, oligosaccharides, vitamins and minerals, have positive effects on gut health. However, their impact on oral cavity-derived gut microbiota and the intestinal environment remains unclear. This study investigated changes of the gut microenvironment and oral cavity-derived gut microbiota populations induced by banana intake. Twenty-six healthy women were instructed to consume two bananas per day for 2 weeks. We measured urinary indoxyl sulfate levels (a general gut microenvironment index) and the proportion of oral microbiota species within the gut microbiota before and after the 2-week banana consumption period. Banana intake significantly reduced urinary indoxyl sulfate levels. Additionally, participants aged &lt; 40 years showed decreased indole levels, while no significant change occurred in those aged &#8805; 40 years. The total number of bacterial species decreased due to banana intake. However, oral microbiota and <i>Porphyromonas</i> spp. populations remained unchanged in all participants. Nevertheless, participants with a high urinary indoxyl sulfate levels before banana intake showed slightly reduced oral microbiota and <i>Porphyromonas </i>spp. prevalence after banana intake, along with significantly lower urinary indoxyl sulfate levels. Therefore, the decreases in urinary indoxyl sulfate and the prevalence of oral cavity-derived bacteria and <i>Porphyromonas</i> spp. indicates the regulatory activity of bananas on gut microbiota.},
doi={10.12691/jfnr-12-4-1}
publisher={Science and Education Publishing}
}