TABLE 2.
Occurrence of butyrate-producing and acetate-consuming strains in six human fecal samples
| Individualc | Sample | Butyrate production (mM) among human fecal isolates numbering:
|
No. (%)a of strains showing net consumption of acetateb among strains producing:
|
|||||
|---|---|---|---|---|---|---|---|---|
| 0–2.0 | 2.1–5.0 | 5.1–10.0 | 10.1–15.0 | >15.0 | >2 mM butyrate | <2 mM butyrate | ||
| Infant | 1 | 5 | 0 | 5 | 4 | 7 | 15/16 | 0/5 |
| 2 | 63 | 9 | 4 | 4 | 0 | 7/17 | 2/63 | |
| Adult A | 1 | 15 | 11 | 1 | 0 | 0 | 5/12 | 0/15 |
| 2 | 55 | 8 | 8 | 5 | 3 | 10/24 | 0/55 | |
| Adult B | 1 | 25 | 2 | 0 | 0 | 0 | 0/2 | 0/25 |
| 2 | 76 | 3 | 0 | 0 | 0 | 0/3 | 0/76 | |
| Total | 239 | 33 | 18 | 13 | 10 | 37/74 (50) | 2/239 (1) | |
a
Number of strains relative to total numbers. N.B., most (90%) strains not showing acetate consumption produced more than 2 mM acetate.
b
Defined as >2 mM acetate, net.
c
Adult A is omnivorous; adult B is vegetarian.