Natural Sciences and Technology Grade 6-A - Thunderbolt Kids

preserve it, just like people did 300 years ago, but there are many
modern methods that are also used today.
• sun drying
• fermenting dairy into cheese, buttermilk (Amasi) or yogurt, or
barley or grapes
• pickling vegetables (onions or gherkins for example)
• salting and spicing meet to preserve it (then drying it)
• adding sugar to berries and/or fruit to make preserves
• pasteurization: using just the right amount of heat to warm
up milk or juice for example, to extend the shelflife
• cooking: roasting, smoking, baking, frying
• toasting
• freezing or refrigerating
• freeze drying
• spray drying
• making juice concentrates
QUESTIONS
When you go home from school today, make alist of the food
products that you have at your house (whether they are in the
cupboard, the fridge or the freezer). Next to each item, write
down the type of processing it might have gone through, using
the list above asaguideline.
Chapter 4. Food processing
DID YOU KNOW?
The Ndebele people
of southern Africa eat
a plant called
Umrorho. It is cooked
or dried by spreading
it out in the sun so
that it can be stored
for the cold winter
months.
67