Iodine in a solution with bacteria is reduced to
iodide. Reduction to iodide suggests that an
oxidation-reduction reaction has taken place.
Reactive groups within proteins on or in the
bacterial cell are oxidized in this process.
Oxidation of proteins important for bacteria
respiration and cell membrane structure prevents
the cell from making energy and maintaining its
integrity. Thus, it dies! The exact mechanism is
however not entirely agreed upon, but we know it
Here is a link to an old paper where scientists
studied the interaction of iodine and bacteria.
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