Lecture 2 History Of Microbiology Flashcards
Supporters of Theory of Spontaneous Generation
(Autogenetic theory or Abiogenesis
Aristotle,
Needham and the Ancient
Greeks
A theory where the Living organisms could
develop from nonliving
matter.
Theory of Spontaneous Generation
(Autogenetic theory or Abiogenesis
A theory where the alternative hypothesis that
living organisms can arise only
from pre-existing life forms?
Biogenesis or biogenetic
theory
Supporters of Biogenesis or biogenetic
theory?
Francesco Redi,
Spallanzani, Jablot, Louis
Pasteur, Robert Koch
A scientist (Pro Biogenesis) scientist who
challenged the idea that
maggots arise from rotten
meat?
Francisco Redi (1668)
A (Pro Abiogenesis) who boiled nutrient broth into covered flasks?
1745 -John Needham
He divided a hay infusion that had been boiled into two containers: a heated container that was closed to the air and a heated container that was freely open to the air. Only the open vessel developed microorganisms. This further helped to disprove abiogenesis.
Louis Jablot
A (Pro-
Biogenesis) who boiled nutrient solutions in
flasks.
Simulated previous experiment but
boiled the broth longer.
1765: Lazzaro Spallanzani
He put an end to abiogenesis debate with his swan-neck or goose-
neck flask
Louis Pasteur (1822-1895)
• Finally put an end to abiogenesis
• Showed microbes caused
fermentation
• Studied spoilage and
introduced “Pasteurization” to
prevent it from contamination
•Used cotton plugs in his
cultures to prevent air borne
contamination
• Devised Aseptic Technique.
Louis Pasteur
“
Father of Microbiology”
Louis Pasteur (1822-1895)
-They discovered the 1st compound microscope (circa 1595)?
- They • Mounted 2 lenses in
a tube and produced
the first compound
microscope.
Hans Lippershey and Zacharias
Janssen(1590) (Dutch lens
grinders)
-first to observe microbes (protozoa, bacteria, yeast)
using a simple microscope
- reported his “animalcules” to the Royal Society of
London
Antonie van Leeuwenhoek
(draper and harberdasher- 1632-1723)
They Pioneered the developments in microscopy such
as immersion lenses and apochromatic lenses
which reduce chromatic aberration
Carl Zeiss and Ernst Abbe 1883
a process of killing heat
resistant bacterial
endospores?
“tyndallization”
•In 1877 - He explained the
need for prolonged heating
to eliminate microbial life
from infusions a process
know as “tyndallization”
John Tyndall (1820-1893)
•His observation anticipated the
“Germ Theory of Disease”
• introduced hand washing as a
means of preventing transfer of
puerperal sepsis in obstetrical
patients
Ignaz Semmelweis
The man whose brilliance lost his job and
sanity
Ignaz Semmelweis
He proposed
the Germ Theory of Disease
1857:Louis Pasteur
According to him, silkworm disease is
caused by a fungus called muscardine.
Agostino Bassi
silkworm disease is
caused by?
fungus called muscardine
Causal organism of pebrine disease of silkworm
protozoan parasite.
According to Robert Koch- anthrax of cattle is caused by?
rod-shaped bacterium
According to •Heinrich Anton de Bary – late blight
epidemic that cause potato famine in
Europe is caused by ?
Phytophthora
infestans