Figure 3.

Ratio of each oligosaccharide consumed (%) after metabolism of FOSs (a) and XOSs (b) in butyrate producers. Ratios of oligosaccharides consumed were measured in culture supernatants of YCFA broth supplemented with 0.5% (w/v) FOSs (a) or 0.5% (w/v) XOSs (b) after incubation for 72 h. Kestose, nystose, and fructosylnystose were the major components of FOSs (>95% components in total), whereas xylobiose, xylotriose, xylotetraose, and xylopentaose were the major components of XOSs (>90% components in total). Bars and error bars indicate means and standard deviations from triplicates, respectively. Bars are absent when the strains did not metabolize the oligosaccharides. Groups A, F, XR, and N correspond to the metabolic groups shown in Figure 1. Bc. faecihominis, Butyricicoccus faecihominis; Bm. faecihominis, Butyricimonas faecihominis.