Question

The first fungal antibiotic discovered was

• A. Streptomycin
• B. Penicillin
• C. Gentamycin
• D. Griseofulvin

Hint:

Remember: Alexander Fleming $\rightarrow$ $1928$ $\rightarrow$ Penicillium notatum.
Antibiotics can be derived from Bacteria (e.g., Streptomycin) or Fungi (e.g., Penicillin).
Always differentiate between the source organism to avoid confusion in exams.

Answer 1

The Correct Option is B

Step 1: Understanding the Question:
The question asks to identify the very first antibiotic derived from a fungus that was discovered in the history of medicine.
Antibiotics are chemical substances produced by microorganisms that can inhibit the growth of or kill other microorganisms.
Detailed Explanation:

• Discovery of Penicillin:
The discovery of Penicillin is one of the most significant milestones in medical history.
It was discovered by the Scottish bacteriologist Alexander Fleming in $1928$ at St. Mary's Hospital in London.
Fleming observed that a mold called Penicillium notatum had accidentally contaminated one of his petri dishes containing Staphylococcus bacteria.
He noticed a clear "halo" around the mold where the bacteria could not grow, leading him to conclude that the mold was producing a substance that killed the bacteria.

• Mass Production and Impact:
While Fleming discovered it, it was later purified and turned into a life-saving medicine by Howard Florey and Ernst Chain during the early $1940$s.
This work earned all three scientists the Nobel Prize in Physiology or Medicine in $1945$.
Penicillin was termed a "miracle drug" because it successfully treated many previously fatal bacterial infections like pneumonia and syphilis.

• Other Options Analysis:
Streptomycin: Discovered by Selman Waksman in $1943$, it was the first antibiotic effective against tuberculosis, but it was derived from a soil bacterium (Streptomyces griseus), not a fungus.
Gentamycin: Discovered in $1963$, it is derived from the bacterium Micromonospora.
Griseofulvin: Discovered in $1939$, it is indeed a fungal antibiotic used for skin infections, but it was discovered after Penicillin.

• Scientific Significance:
Penicillin belongs to the beta-lactam group of antibiotics. It works by interfering with the synthesis of the bacterial cell wall (peptidoglycan), causing the bacteria to burst.

Step 3: Final Answer:
The first fungal antibiotic ever discovered is Penicillin.