Tag Archives: penicillin

this day in the yesteryear: First Patient Successfully Treated with Penicillin (1942)

First Patient Successfully Treated with Penicillin (1942)

Penicillin was the first antibiotic agent successfully used to treat bacterial infections in humans. Penicillin’s effect on bacteria was first observed by biologist Alexander Fleming in 1928, but it was not until 1941 that scientists purified the substance and established that it was both effective in fighting infectious organisms and not toxic to humans. The first successful treatment occurred the next year. Where did scientists find the mold that allowed them to mass produce the drug? More… Discuss


today’s birthday: Alexander Fleming (1881)

Alexander Fleming (1881)

English: Alexander Fleming receives the Nobel ...

English: Alexander Fleming receives the Nobel Prize from King Gustaf V of Sweden. (Photo credit: Wikipedia)


Motivated by the devastating infections he saw in hospitals during World War I, Fleming, a Scottish bacteriologist, began searching for an effective antiseptic.

English: Chemical structure of Penicillin G. H...

English: Chemical structure of Penicillin G. High-resolution .PNG made with Chem3D and IrfanView — see WikiProject Chemistry – structure drawing for detailed instructions. Please drop me a note if you need the source file. (Photo credit: Wikipedia)

In 1922, he discovered lysozyme, an antibacterial enzyme present in saliva and tears. In 1928, he isolated the substance penicillin, which became the first successful antibiotic for human bacterial infections. His work earned him a Nobel Prize and has forever changed modern medicine. In what accidental way did he discover penicillin? More… Discuss






It is estimated that there are 1.5 million species of fungus on Earth, only a fraction of which have yet been described. The study of fungi, called mycology, has important applications in the dairy, wine, and baking industries, as well as in the production of dyes and inks. Fungi can cause diseases, but can also be medically beneficial. Mycological research has led to the development of such antibiotics as penicillin and tetracycline. What mushroom naturally contains a cholesterol-lowering drug? More… Discuss