Question

Write some traditional techniques and modern techniques of food preservation.

Answer 1

Traditional techniques:
a)Fermentation: Fermentation is the microbial conversion of starch and sugars into alcohol. It makes foods more nutritious and palatable.
b)Boiling:
Boiling liquid food items kill all the microbes. Eg. Milk and Water.
c)Sugaring:
Sugar is used to preserve fruits in an antimicrobial syrup with fruit such as apples, pears, peaches, plums or in a crystallized form, therefore the product is stored in dry condition.
Modern techniques:

• Pasteurization: It is a process for preservation of liquid food. This method was invented by Louis Pasteur in 1862.
• Milk is heated up to 70ºc to kill the bacteria and it is cooled to 10ºc to prevent the growth of remaining bacteria.
• Then milk is stored in sterilized bottles in cold pla