Figure 1

Impact of the three cereal fractions on the gut microbiota in the cecal content. Weight of cecal tissue (a), cecal content (b), Principal Coordinate Analysis plot of β-diversity based on Bray-Curtis distance (c) and Principal Coordinate Analysis plot of β-diversity based on Morista-Horn distance (d). Mice were fed a control diet (CT, blue), a western diet (WD, red), a WD supplemented with 5% of wheat bran fraction with large particles (WD+WB, clear green), a WD supplemented with 5% of wheat bran with reduced particle size (WD+WBs, dark green) or a WD supplemented with 5% of AXOS (WD+AXOS, yellow) for 8 weeks. Results are expressed as mean±SEM for a and b (n = 7–9). Data with different superscript letters are significantly different at p < 0.05 (ANOVA). Dietary treatments accounted for 39 and 48% of the variation in the dataset (Bray-Curtis and Morisita-Horn respectively, adonis method, 1000 permutations, p < 0.001).