Fig. 5

Comparison of the Bifidobacterium number and SCFAs in faecal samples. The faecal Bifidobacterium numbers of midlife (M) and young (Y) groups were determined by qPCR (a). The faecal SCFAs were determined by GC. The total SCFAs (b) was the sum of 6 individual acids (c). Ac: acetate, Pr: propionate, Bu: butyrate, iBu: isobutyrate, Va: valerate, iVa: isovalerate