The Methods and Substances Used in Food Technology (Structured Questions)


Question 1:
Diagram 1 shows foods that have been processed through three different methods.

(a) Write down the food processing methods, P, Q and R, in Diagram 1.
(b) What happens to the water content in the food that has been processed through method P?
(c) The food is heated at 121 oC during the process in method Q.
What is the purpose of the heating?
(d) Fresh milk is heated for 30 minutes in method R.
What is the temperature used?

Answer:
(a)
P: Dehydration
Q: Canning
R: Pasteurisation

(b)
Water is removed from the food.

(c)
To kill the microorganisms in the food.

(d)
63 oC


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