Any simple bioprocess experiment ideas?

[TUDI]

I am teaching Bioprocess Engineering lecture but the lab of my school does not have many instruments and equipments. With basic equipment(without a bioreactor etc) bioprocess experiments for students that we can follow the process every week. I need some cool and interesting ideas..

[GM11]

Yeast springs to mind, many variables to study and simple apparatus. You can actually study some advanced processes using yeast and a little imagination, for example aim for the production of another alcohol other than Ethanol.