University of agricultural , science

bang lore

College of sericulture, chintamani

Welc

ome

To

Microb

iolog

y ppt

Topic: contribution of scientist in microbiology

Presentation to:

Lakshmipathi

Prof in

microbiology

Seri co

chintamani

Presentation

by:Akarsh s g

I BSc Agri

Id No :

ALC3002

Seri co ,

chintamani

Anton van Leeuwenhoek : He was born in Holland on October 24, 1632 . he was a Dutch tradesman and scientist he is commonly known as “the father of microbiology", and considered to be the first microbiologist . he is best known for his work on the improvement of the microscope and for his contributions towards the establishment of microbiology.

BACTERIA & ARCHAEA Contribution on BACTERIA & ARCHAEA

IMMUNIZATION & TREATMENT Louis Pasteur(1822 -1895).  Developed a method of immunizing against a disease (chicken cholera) using a weakened (attenuated) strain of the pathogen in 1880.  In 1885 he carried out successful, but unethical, experiments with rabies on a child.  The term virus (poison) was coined by Pasteur.

Alexander Fleming : He discovered penicillin in 1928 whilst working at st Mary's hospital in London and published the first paper on it the following year.  He received the Nobel prize in 1945, with Howard floret and Ernst chain, for their work on Penicillium notatum.

Martinus Beijerinck :He developed an enrichment culture to create the best conditions for growth of required bacterium in 1889.  Whilst working on tobacco mosaic virus in 1899, he discovered that a filtrate free of bacteria can still transmit the disease, by some other agent.

Robert Koch :he published a paper on the bacterium which causes anthrax in 1876.  In 1881 he developed the use of gelatine on glass plates as a means for culturing bacteria colonies for experiments.  He was awarded the Nobel Prize in 1905 for his work on the Tubercule bacillus of tuberculosis.

Frederick Griffith : He discovered transformation in bacteria in 1928 and established the foundation of molecular genetics.

Wendell Stanley, in 1935, demonstrated the tobacco mosaic virus remains active even after crystallization.  He received the Nobel Prize in 1946 with Northrop and Sumner.

Sergei Winogradsky, in 1890, isolated nitrifying bacteria in soil and described the organisms which are responsible for nitrification.

Peter Mitchell : he proposed the chemiosmotic theory in 1959, which explains ATP synthesis, solute accumulations/expulsions, and cell movement.  He was awarded the Nobel Prize in 1978.