Food Preservation

Our food provides us with energy. However, when this food is left for a few days, it undergoes changes. It turns bad. Do you know why this happens? What can we do to prevent these changes? Can you identify the different ways of preventing food from turning bad? 
At the end of this lesson, you will learn about ways to preserve food and the reasons each way of food preservation is being used.  Let’s explore!



At the end, let's wrap it up :

ü   Spoilt food is food that unsafe to eat.
ü   Spoilt food has one or more of the following characteristics :
·         unpleasant smell
·         unpleasant taste
·         changed colour
·         changed texture
·         mouldy
ü   Food preservation is a process of slowing down the food from becoming bad.
ü   The ways to preserve food are :
·         bottling
·         canning
·         pickling
·         drying
·         salting
·         vacuum packing
·         cooling
·         freezing
·         waxing
·         pasteurizing
·         boiling
·         smoking
ü   We need to preserve food so that they will last longer, easy to store as transported as well as to reduce food wastage.



Vocabulary

ENGLISH
BAHASA MELAYU
bottling
pembotolan
canning
pengetinan
cooling
pendinginan
drying
pengeringan
freesing
penyejukbekuan
heating
pemanasan
pickling
penjerukan
preservation
pengawetan
salting
pengasinan
smoking
pengasapan
vacuum packing
pembungkusan vakum
waxing
pelilinan


 
Then, let's have some tests here!





ANOTHER QUICK TEST
Choose the correct answer.
1.   Which of the following are signs that tell us that the milk is spoilt?
I    It has a sour taste                       
II   It turns green in colour
III  It has an unpleasant smell      
IV  It has a frothy appearance
A   I, II and III only                           
B   I, III and IV only          
C   II, III and IV only                         
D   I, II, III and IV

2.   Which of the following methods of food preservation is suitable for keeping vegetables for a short time?
A   Drying                                                            
B   Cooling
C   Canning                                                         
D   Freezing

3.   Which of the following ways of preserving food involves immersing the food in a concentrated sugar solution?
A  Boiling                                                             
B  Cooling
C  Pickling                                                           
D  Pasteurising

4.   Which of the following methods can be used to keep the food up to 6 months without the food turning bad and losing their taste and texture?
A  Waxing                                                           
B  Pickling
C  Vacuum packing                                         
D  Freezing
5.   Which of the following statements about the importance of preserving food is not true?
A  Preserving food will reduce wastage of food.
B  Preserving food will improve the colour and texture of the food.
C  Excess food can be preserved so that it can be used later.
D  Preserving food can be kept longer without losing its quality.

1 comment:

  1. Anybody like to try the test?
    Do drop me a comment/request and I will post the answers,ok?

    ReplyDelete