201 Lecture notes Autumn 2008_Part1

201 Lecture notes Autumn 2008_Part1 - The Science of Food...

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1 The Science of Food I. What is food? A. What was your “food” before it was “your food”? B. Most foods were living organisms: plants, animals = humans originally omnivores. (What are some foods that weren’t alive?) 1. --Cells, biochemicals, structural materials II. Older foods were those materials in unaltered forms 1. --“Cooking” 2. --Evolved to foods that were minimally processed a. Grinding of wheat into flour b. Filleting of fish, shucking of oysters c. Use of spices, salt to flavor d. Foods became things that we could make at home, but were altered significantly. B. Now: Modern foods are put together from components that are purified from old fashioned foods. You can’t duplicate 90% of the products on the market at home. Try to make a Dorito or Cheeto at home!! C. III. Why do we consume food? For both nutrient and non-nutrient reasons. A. Non-nutrient reasons: 1. Satiety (very complex):
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2 a. Pleasure b. Calming 2. Social 3. Reward B. Nutrients 1. Foods are the source of chemicals necessary for our survival 2. What is the definition of a “nutrient”? Chemicals necessary for the __________, __________, and ___________ of healthy individuals 3. Types of nutrients a. Water b. Minerals c. Vitamins d. Fats e. Carbohydrates f. Proteins 4. Satisfy 2 critical needs of humans: a. Energy:
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201 Lecture notes Autumn 2008_Part1 - The Science of Food...

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