James 81 Todays Overview CANNED FOOD BRIEF HISTORY BOTTLED FOOD BRIEF HISTORY It starts from Napoleons demand By endless war Napoleon required a method to keep food safe and preserve food for a long time ID: 606060
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Slide1
Canned food
James
8.1Slide2
Today’s OverviewSlide3
CANNED FOOD?Slide4Slide5Slide6Slide7Slide8Slide9Slide10
BRIEF HISTORYSlide11
BOTTLED FOODSlide12
BRIEF HISTORY
::It start’s from Napoleon’s demand.
-By endless war, Napoleon required a method to keep food safe, and preserve food for a long time.
::On 1804, France opened public contest for the method, setting off prize of 54kilo of silver.Slide13
Brief History
Nicolas
Appert
was the winner. He invented ‘canning jar’. He putted boiled meat and vegetables into a jar, then heat it. After that, he used cork to seal the jar.Slide14
Brief History
Durand’s tin canister
England chased after new method, and Durand came up with new idea, which was the first method that utilized ‘can’.Slide15
Brief History
Then canned food spreads worldwide, and starts to improve in flavor.
Red Pepper Flavor
Original FlavorSlide16
SCIENCE &CANNED FOOD?Slide17
SEALINGSlide18
Expiration Date
Canned Food’s Expiration Date is excessively long.
How could this be?
-Answer is:
SEALINGSlide19
Canned Food produced in 1845 was opened on 1939.
It was still Edible!!
Now, these are all related to SEALING, the most basic step of producing Canned Food.Slide20
First, contents are cooked.
Second, contents go into cans.
Third, the cans get heated, and kills leftover micro-organism.Fourth, the airs go out from the can, and it’s sealed.
Fifth, even time goes on, sealed can doesn’t allow air and micro-organism to go inside.Slide21
CANNED FOODS IN modern societySlide22
Nowadays
Nowadays, canned foods are widely accepted as ‘global food’ because of it’s convenience; what’s more it’s safety.
Without Canned foods, soldiers would have starve in war-field.
Without Canned foods, people out space would starve in space-station.Slide23
Thank You for Listening!