Description

A Suspension is an appropriate protein source, suitable for bacterial growth, and might be required to provide energy for bacterial metabolism and reproduction.

A useful protein source for the bacterial culture is yeast extract, which is soluble in the medium and does not leave any suspended particles or harmful or residual materials that may influence urease activity or reduce blockage of the pore in the geomaterial.

A preferred protein source is yeast extract, preferably the concentration of the yeast extract is different.