Nature's Pharmacy
Penicillium mold
Penicillium notatum is a blue-green mold commonly found on
spoiled bread and fruit, particularly rotten tangerines. Ever since Scottish
chemist Alexander Fleming accidentally discovered the mold's antibacterial
properties in 1928, chemists have used it to produce many varieties of
penicillin, antibiotics that continue to be immensely valuable in treating
bacterial infections.