Canning
The shelf life of canned food
Up to 5 years or more.
What is drying?
Removing the moisture from food
What is the most popular method of food preservation?
Refrigeration
What is sugaring?
combining food with sugar to stop bacteria growth
What is the oldest food preservation method?
Pickling
Canning removes this from the container
Oxygen
What are three types of drying?
Air dry, sun dry, and dehydration
What is freezing?
Lowering temperature to slow microorganism growth
How does sugar stop bacteria growth?
It reduces the water content
What is pickling?
Fermenting vegetables in a brine
When do you heat the jars for canning?
Before and after adding the food
Where should you store dryed food?
In cool, dark, and dry places
What temperature should we put our freezers at?
0 degrees Farenheit
How does salting stop bacteria growth?
It reduces the water content and can even kill bacteria
What is blanching?
Heating vegetables and then cooling them in ice water
What environment does Botulism remain inactive in?
High acidic environments
Drying causes the loss of what?
Why should we never refreeze defrosted food?
It gives bacteria an oppurtunity to grow between thawing
Both are expensive
What are the four factors that changed food science technology?
Canning, Commerical freezing and refrigeration, Refrigerated rail cars and trucks, and Food perservatives
Deadly foodborne illness you can get from canning improperly
Botulism
How long does dried food last?
How long does the quality of frozen food last?
Ancient Romans valued salt so much they used it as what?
As a form of currency
What three factors affected diets during colonial times?
Where you lived, long winters, and nutritious diets were unknown.