Microbial profile at the genus level. (A). All OTUs are shown. The arrows indicate the detection of Bifidobacterium and increase in the detection of Blautia with the bead-beating procedure. Black bars represent the samples subjected to bead-beating and grey bars those that were not, while the blue bars indicate the samples to which PBS was added. (B). Relative abundance of Blautia and Bifidobacterium. The identification of the samples is identical to that shown in the legend of Figure 3. DL5 and DL8 correspond to participants L5 and L8 from the homogenisation evaluation. Samples DL5C and DL8C represent those that were not submitted to bead-beating nor did they contain PBS. DL5P and DL8P contained only PBS.