Fig. 3

Identification of resistant and sensitive microbiota toward fiber exposure. Principal coordinates analysis (PCoA) of the Bray–Curtis distance computed on the following MBRA-based parameters determined 48 h after the initiation of fibers treatment are presented: bacterial load, beta diversity (Bray–Curtis and unweighted Unifrac distances), alpha diversity (Evennenss distance), lipopolysaccharide and flagellin bioactive levels. In A, B, all donors are included, and dots are coloured by donor (A) or by treatment (B). C Histogram representing the cellulose-cellulose, cellulose-inulin, and cellulose-psyllium Bray–Curtis distance for the various donors included. D Principal coordinates analysis (PCoA) of the Bray–Curtis distance computed on the above-listed parameters, with only donors 1 and 2 included. Vectors for the included variables are represented. Data are the means ± S.E.M. Significance was determined using one-way ANOVA followed by a Tukey’s multiple comparison test and significant differences were presented as follows: *p < 0.05, ****p < 0.0001