Microbiology and Biotechnology

Cells of elder pith

Detection of microorganisms in air

Staining of bacteria preparations

Proof of the effect of antibiotics and chemotherapeutics

Proof of the effect of disinfectants

Decomposition of cellulose

Influence of the temperature on microbial decomposition pro-cesses

Influence of mineral oil or salt on the decomposition ofcellulose

Decomposition of organic substances in water

Microbial decomposition of mineral oil

Alcoholic fermentation

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 ...

We visit a wastewater treatment plant

Principle

A visit to a water treatment plant reveals some fascinating procedures and purification methods. We will not merely be concerned with interesting impressions, but instead we will increase our understanding for microbiological processes by measuring t ...