Vaccination,Fermentation, Pasteurization and Germ theory of diseases

Vaccination,Fermentation, Pasteurization and  Germ theory of diseases

Vaccination,Fermentation, Pasteurization and  Germ theory of diseases

Vaccination: 

Edward Jenner a young British Physician used scraping of cowpox blister to vaccinate against sheep pox.

Fermentation:

 Microorganism like yeast converts sugar to alcohol in the absence of air this process is called fermentation. 

It is used to make wine & beer. 

In the presence of air bacteria convert alcohol into acetic acid or vinegar. 

Pasteurization:

 It is the heat treatment of beverage & milk at 72 ̊ ̊ ̊ C for 30 min to kill microorganism (which causes spoilage of liquid) in food without compromising on its quality. 

Now a day it is only used for milk product. 

Germ theory of diseases: 

Microorganisms are the cause of disease.

 In 1860’s English surgeon Joseph Lister use phenol, Carbolic acid as a disinfectant & antiseptic solution. 

This practice reduced the incidence of infection & death others surgeon readily adopted it. 

Lister technique was the earliest medical attempt to control infection caused by microorganism.


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