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WHAT IS FOOD PRESERVATION?

• Food preservation is basically a way of treating foods so they last a longer time.
• Some examples of preserved food are pickles and jam.
• There are many types of food preservation methods.

Why is food preservation so important?

THE ORIGIN STORY

• Salt
• Temperature
• Packaging/Canning
• Dehydration
• Freezing

SALT

• Essential to food preservation because it removes all moisture from the food.
• It also kills microbes. This ensures that no bacteria can grow on the food to make sure it does not spoil.

COLLECTIVE LEARNING

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SHARING INFORMATION

• Fire burning was considered to be the first form of food preservation.
• Food preservation techniques quickly spread around the world

BUILDING UPON

• Jam making was developed in 600 AD to help preserve fruit.
• Canning was developed to be able to ship foods, such as jam, around the world.

THRESHOLDS

SPACE FOODS

• Space food is a threshold because it is shaping the future of food preservation.
• Engineers and researchers at NASA have created a way to store food for months at a time in space.

CANNING

• Canning was big around the 19th century to store foods and keep them good for long periods of time. It is still being used today.
• Canning is a threshold because it reshaped the food packaging business. It offered a more safe, cheap, and quality way to transport food.

CHANGE OVER TIME

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CHANGE & DEVELOPMENT

• Space food was first introduced to astronauts in the late 1960s, many said it was unappealing.
• Every space flight after, scientists and chefs designed new foods that were better than the first.

MODERN DAY

• Some methods of modern food preservation include canning, freezing/freeze drying, and irradiation.
• These methods were created anywhere during the 20th to 21st century.

FUTURE

• The future of food preservation is very bright.
• It involves things such as chemical coatings and even laser ovens!

MULTIPLE PERSPECTIVES

CANNING

FREEZING

PRE-MADE MEALS

LETS PLAY SOME KAHOOT!