Biotechnology and Microbiology

Fermentation of molasses to ethanol with yeast

Fermenters are used for the biotechnological production of enzymes and other products using bacteria, yeast and cell cultures. For educational purposes a bubble bioreactor used in this experiment is a more convenient and ecomical alternative to commercial fermenters. To demonstrate how ferm ...

Microbial synthesis of ethanol by Zymomonas mobilis subsp. mobilis

Principle

The properties of the micro-organism Zymomonas mobilis have been used in the production of alcohol for centuries. Nevertheless, the bacterium in palm wine and pulque, the fermented juice of the agave plant, was not identified and recognised as being ...

Bacteria and mining - microbial extraction of ore by Thiobacillus ferrooxidians and thiooxidans

Principle

Scientists first recognised importance of certain bacteria for the extraction of metals from ore in the 1950s. Nowadays t ...

Immobilised cells in the service of biotechnology - micro-bial synthesis of acetic acid with Acetobacter aceti