Question

what is the meaning of pasturisation

Answer 1

pasteurisation is a process that kills microbes (mainly bacteria) in juice,milk etc.
Pasteurisation  is the process of heat processing a liquid or a food to kill pathogenic bacteria to make the food safe to eat. The use of pasteurisation  to kill pathogenic bacteria 

Answer 2

It is the process that kills microbes and microorganisms from the liquids milk, juices, canned drinks, etc. It is invented by French scientists Louis Pasture untill 19th century.