M-25
Scrap
book
Food preservation
Technology
By: Dhannyaa kumaran 6m
Task given by: MS NG
Meaning of food Food preservation
preservation technology technology is a method to
slow down or prevent the
growth of microorganisms.
Factors that affect
the growth of
microorganisms
1. Presence of water
2. Presence of air
3. Suitable temperature
4. Suitable acidity
Characteristics of spoiled food
Spoilt milk becomes Spoilt bread and rice are Spoilt fruits and
bubbly and lumpy, smells covered with black spots, vegetables become
bad, and has a sour taste mouldy, and change in
and produce bad smell texture, taste, and colour
Spoilt beef and chicken Spoilt fish, squids, prawns
become blackish, become change in texture, produce
bad smell, becomes sticky
smelly, and feel slimy
and mushy
Purpose and method of food preservation
Purpose of food Food preservation
preservation methods:
The purpose of food Drying, boiling, cooling,
preservation is to prevent or freezing, vacuum packing,
to slow down the growth of canning, bottling, pasteurizing,
microorganisms pickling, salting, smoking, and
waxing.
The importance of food Food has a longer shelf life
preservation technology Food wastage can be avoided and
prevented
Food becomes easier to store
Continous food supply of out of
season food
Food becomes easier to be
exported
Production of instant food
Food can be preserved by:
Using more Combining
than one food more than
preservation one food
preservation
method
method
Pictures of food
preservation
methods ➡️
Extra informations
Did you know The more shinier Did you know Every preserved
that food can be the food, the that honey is 1 of food has an expiry
more wax is
preserved in added the only food date.
more than 1 way that lasts forever
Thank you
and goodbye!
Thank you to my dearest science
teacher, Ms Ng for giving us this
fun project to complete. Thank
you and goodbye everyone!