Micro small Logos science Bios life Science dealing with minute microorganisms unseen with naked eyesNo Dout that microorganisms existed on the earth water ground air millions of years before man the life of ruminant cannot begin or continue without the roe of ruminant microflora bacteria or micro fauna protozoa Ancient Egyptian could stop putrefaction of carcasses f their kings and preserve their holly mummies for several thousands of years by famous Egyptian art and science of embalming Man tried to understand the usual changes resulting from microbial action as purely chemical process Only in 1668 redi an italian scientistdouted in theory and in simple experiment could prove that maggot are not sponteously created from dead matter but they were the hatching larvae from eggs laid down by flies on piece of meat Robert hookDiscover compound microscope He was able to see individual cells Of living creatures

1. General bacteriology
concise course
• Mohamed AL ashram

2. Introduction
micro/bio/logy
Micro small
Logos science
Bios life
Science dealing with minute microorganisms unseen with naked eyes

3. Microbiology is extensive science
• Necessity study to study different microorganisms
• Microbiology is subdivided into
• Bacteriology
• Virology
• Mycology
• Protozoology
• With another division
• Clinical microbiology environmental microbiology
• industrial microbiology food microbiology

4. History of microbiology
• No Dout that microorganisms existed on the earth water ground air
millions of years before man the life of ruminant cannot begin or continue
without the roe of ruminant microflora bacteria or microfauna protozoa

5. In fact the releationship between man and
microorganism start as early as beginning of his
existence on earth
he observed the putrifacton of carcas of animals birds
himself
Putrifaction

6. Ancient Egyptian could stop putrefaction of carcasses f their kings and preserve their
holly mummies for several thousands of years by famous Egyptian art and science of
embalming
By adding known or unknown chemical substances which kill the
putrefaction microorganisms

7. Although ancient man did not know the real microbial cuase
He notice sugar fermentation
• He experienced several bacterial
viral and prasitic diseases
• He tries o treat b
• Herbes
• magic
Made alcoholic beverage
• He made bread
• He made cheese
• He made vingar

8. Life itslf when seen in small
creature like worms and insects
was explained
by spontaneous generation
Aristotle 384-322 BC
• As a chemical interaction between
organic matter water and air
Man tried to understand the usual changes resulting from
microbial action as purely chemical process

9. Only in 1668 redi an italian scientist
douted in theory and in simple experiment could prove that maggot are
not sponteously created from dead matter but they were the hatching
larvae from eggs laid down by flies on piece of meat
• In his 2nd experiment Redi used
gause to coverhalf the jar to allow
air but not flies
• Maggot fly larvae would apear on
uncovered meatbut not on the
meat in sealed jar

10. Only in 17 century
two major achievement regarding the discovery of microscope
R.hook 1665
• Discover compound microscope
• He was able to see individual cells
• Of living creatures
A.V.leeuwenhook 1773
• With his single lense microscope with
magification power 300x he
• Discovered the mirobial world
• He describe and raw microorganisms
for the first time
• He published his discovery in journal
of royal society of london 1683

11. pioneers
LOUIS PASTEUR
Joseph Lister
sterilization
Robert Koch
,
Koch’s Postulates
of Disease
Transmission
pasteurization