How was the antibiotic penicillin discovered?

1.	How was the antibiotic penicillin discovered?
Answer» 1. Alexander Fleming, a professor of microbiology at St. Mary’s Hospital had cultured varieties of bacteria and fungi in petri dishes in his laboratory. 2. On 3^rd September 1928, while observing Staphylococci cultures, he made an interesting observation in one petri dish. 3. In that petri dish, fungal colonies had grown but the area around those colonies was clean and clear, i.e. the bacteria had actually been destroyed. 4. After further studies, he confirmed that the fungus growing there was Penicillium and its secretion had destroyed the bacterial colonies. 5. Thus, the first antibiotic – penicillin had been discovered accidentlly and this formed the basis to find cures for incurable diseases.

Answer»

1. Alexander Fleming, a professor of microbiology at St. Mary’s Hospital had cultured varieties of bacteria and fungi in petri dishes in his laboratory.

2. On 3^rd September 1928, while observing Staphylococci cultures, he made an interesting observation in one petri dish.

3. In that petri dish, fungal colonies had grown but the area around those colonies was clean and clear, i.e. the bacteria had actually been destroyed.

4. After further studies, he confirmed that the fungus growing there was Penicillium and its secretion had destroyed the bacterial colonies.

5. Thus, the first antibiotic – penicillin had been discovered accidentlly and this formed the basis to find cures for incurable diseases.

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