On Rahul’s birthday, his mother prepared many dishes for him. After having their meal, they found that
many food items were left over. Rahul’s mother kept these leftovers in a air-tight container and refrigerated
them.
(a) What is food preservation?
(b) What will happen to the food if it is not refrigerated?
(c) What is the role of refrigeration in food preservation method?
Answers
Answer:
a.Food preservation includes food processing practices which prevent the growth of microorganisms, such as yeasts, and slow the oxidation of fats that cause rancidity.
b. Otherwise, perishable food kept at room temperature goes into the “danger zone” of 40 and 140 degrees Fahrenheit, or 4.44 to 60 degrees Celsius. ... At freezing, the bacteria dies, but refrigeration simply slows them down, so food can still spoil, even if it's kept in a fridge at an appropriate temperature.
C. Cold temperatures help food stay fresh longer. The basic idea behind refrigeration is to slow down the activity of bacteria (which all food contains) so that it takes longer for the bacteria to spoil the food. ... Refrigeration and freezing are two of the most common forms of food preservation used today.