The document summarizes the contributions of Louis Pasteur and Robert Koch, two pioneering scientists in microbiology. It notes that Louis Pasteur, a French chemist and microbiologist, discovered the principles of vaccination, microbial fermentation, and pasteurization, and disproved the theory of spontaneous generation. It also describes that Robert Koch, a German physician, established the foundational principles of identifying the specific causes of disease, known as Koch's postulates, and isolated the bacteria that cause anthrax, cholera, and tuberculosis. Both Pasteur and Koch are considered fathers of microbiology for their groundbreaking discoveries.

1. Contributions Of The
Scientists
Amit Kumar
Gurkul Kangri University,
Haridar

2. Contents
Contributions of the Scientists in
the field of microbiology :
1. Louis Pasteur
2. Robert Koch

3. 1. Louis Pasteur
Born : 27 December, 1822
Died : 28 September, 1895
Country : France
Known for: Pasteurization,
Fermentation
process,
Vaccines for
rabies and
anthrax

4.  He was a French
chemist and
microbiologist.
He is known for his
discoveries of principles
of vaccination, microbial
fermentation, and
pasteurization.
He crushed the
doctrine of spontaneous
generation.
Louis Pasteur in his
laboratory

5. He reduced the mortality from puerperal
fever.
He created first vaccines for rabies and
anthrax.
His medical discoveries provided direct
support for the germ theory of disease.
He is best known for his invention of the
technique of treating milk & wine by gentle
heating to stop bacterial contamination, a
process now called pasteurization.

6. Louis Pasteur experiment for crushing the doctrine of
spontaneous generation

7. Pasteur also made significant
discoveries in chemistry, most notably
on the molecular basis for the
asymmetry of certain crystals and
racemization.
He is known as the ‘Father of
modern microbiology’.

8. 2. Robert Koch
Born : 11 December, 1843
Died : 27 May, 1910
Country: Germany
Known for : Discovery of
bacteriology
Koch’s
postulates of
germ theory,
Isolation of
anthrax,
tuberculosis,
and cholera

9. He was a German physician and pioneering
microbiologist.
He is
best known
for giving
four
postulates,
now called
Koch’s
postulates.

10. He discovered the
causative agent of anthrax –
Bacillus anthracis.
Koch determined the
causative agent of cholera,
isolating Vibrio cholerae.
He reported the causative
agent of tuberculosis –
Mycobacterium
tuberculosis.
Bacillus anthracis
Vibrio cholerae
Mycobacterium
tuberculosis

11. o Koch received the Nobel
Prize in physiology and
medicine in 1905 .
oHe is known as the ‘Father of
bacteriology’.

12. THANK
YOU