Table 1.
Fermentation Conditions Used in the Environmental Control System for Intestinal Microbiota System to Simulation a Normal and a Slow Transit Time by a Modification of the Retention Time
| Reactor | pH | Dilution rate (hr−1) | Retention time (hr) | Minimum doubling time (hr) |
|---|---|---|---|---|
| Simulation of a 48 hr transit | ||||
| P48 | 5.8 | 0.080 | 12.48 | 8.65 |
| T48 | 6.2 | 0.056 | 17.76 | 12.31 |
| D48 | 6.8 | 0.056 | 17.76 | 12.31 |
| Simulation of an 96 hr transit | ||||
| P96 | 5.8 | 0.040 | 24.96 | 17.3 |
| T96 | 6.2 | 0.028 | 35.52 | 24.62 |
| D96 | 6.8 | 0.028 | 35.52 | 24.62 |
Minimum doubling time means the minimum doubling time of each bacterial species to avoid washing from the reactor and therefore the disappearance of the species when analyzed at steady-state.
P48, T48, and D48 indicate respectively the P (proximal), T (transversal), and D (distal) reactor simulating a 48-hour transit. P96, T96, and D96 indicate respectively the P (proximal), T (transversal), and D (distal) reactor simulating an 96-hour transit.