Discovery of the yeast Saccharomyces boulardii
This goes back to the French microbiologist Henri Boulard. In the twenties of the last century in Indochina,
he observed that the local inhabitants used an infusion beverage obtained from tropical fruits (including lychees) for the treatment of diarrhea, and isolated the yeast from the skin of these fruits. The round-to oval-shaped cells of S. boulardii reproduce by budding. They are eukaryotes which grow both under aerobic and under anaerobic conditions.