Presentation on theme: "Lesson 3: Processed Kids Food Processing. What Does It Mean To Process Foods? To transform raw food into a new food through the use of technology, chemicals,"— Presentation transcript:
What Does It Mean To Process Foods? To transform raw food into a new food through the use of technology, chemicals, physical or other refining methods
REASONS FOODS ARE PROCESSED Can be distributed world- wide Produced at a lower cost Keep food from spoiling Preserve seasonal foods To remove toxins
What Does Processing Do To Food? Leaches out valuable vitamins and minerals Destroys Fiber Causes allergies, asthma and cancer Adds calories Increases sugar and fat consumption
Affects Your Brain http://www.youtube.com/watch?v=ZoDsfiD3Bv8 Teacher please note: You may have to copy and paste this link into your browser in order for the video to run
Processing Techniques Bleaching Benzyl Peroxide to whiten flour Chlorine Dioxide rapidly changes the color Destroys Vitamin E Skin and eye irritant Linked to allergic reactions Cancer-causing agent Poisonous in large amounts
FOOD FACT: BLEACH Unprocessed flour is naturally brown in color. Flour is changed to a white color by bleaching it. Used to take several months to change the color of flour, now it only a few minutes with bleaching additives.
Processing Techniques Hydrogenation Chemicals change a liquid oil into a solid Known as hydrogenation, partially hydrogenated oils or trans-fats Raises cholesterol levels more than any other fat Can lead to heart disease
FOOD FACT: HYDROGENATION Most people are wise to the dangers of trans-fats, so food companies have been replacing them with palm oils. Palm oils are extremely high in solid or saturated fats. This process is destroying the rain forest.
Difference Between Whole and Refined Foods Whole foods are foods in their entirety or closest to their natural state Refined foods are highly processed and stripped of their nutritional value
Why are Grains Refined? To extend shelf life. Refining grains led to deficiencies in vitamins and minerals. o Pellagra – niacin deficiency o Beriberi – thiamin deficiency Food companies required to add nutrients back in – process called “enrichment”