Table 2 Summary of changes in microbiota and metabolite concentrations with varied sulphate influx and transit times. Percentage changes to one significant figure compared to the results under NormS conditions are shown, after the full transit time
From: Examination of hydrogen cross-feeders using a colonic microbiota model
Colonic transit time | 1Â day | 2Â days | 4Â days | |||
|---|---|---|---|---|---|---|
Sulphate influx | NoS | HighS | NoS | HighS | NoS | HighS |
Non-hydrogenotrophic MFGs |  < 0.02 |  < 1e−3 |  < 0.02 |  < 2e−04 |  < 0.01 |  < 3e−04 |
Acetate | − 5e−03 |  + 1e−04 | −4e−03 |  + 1e−06 | −3e−03 |  + 7e−05 |
Propionate | − 2e−03 |  + 3e−05 | − 4e−04 |  + 1e−05 |  + 8e−04 | − 1e−04 |
Butyrate | − 6e−03 |  + 1e−04 | − 3e−03 |  + 5e−05 |  + 2e−04 | − 9e−06 |
Acetogen MFG |  + 0.04 | − 1e−3 |  + 0.04 | − 8e−04 |  + 0.01 |  + 2e−04 |
Methanogen MFG |  + 0.7 | − 0.03 |  + 3 | − 0.2 |  + 10 | − 0.7 |
SRB MFG | − 19 |  + 1 | − 25 |  + 2 | − 25 |  + 2 |
H2S | − 39 |  + 2 | − 35 |  + 3 | − 28 |  + 2 |