Fig. 1

Butyric acid concentration of 294 bacterial isolated from 3 heathy human faeces. a Butyric acid concentration of 103 bacteria isolated from faecal sample 1. b Butyric acid concentration of 90 bacteria isolated from faecal sample 2 and c butyric acid concentration of 101 bacteria isolated from faecal sample 3. Black bar chart represents bacterial isolate producing the highest butyric acid