Question - I am working for a company producing starch. For this the microorganism. Enzymes are the alpha and omega to biological processes. They take care of all important chemical reactions in a cell.
Enzymes are proteins, and like all proteins they consist of chains of amino acids.
These chains have to be faulted in a specific way to give the enzyme it's activity. These cross-bonds consist of double Sulphur bonds. This introduction was needed to explain the mechanism of sulphur dioxide, SO2. SO2 is reactive to some enzymes and can degrade the sulphur bonds needed for structural stability. Once these bonds are broken the enzyme is inactive.