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Ch 1 lecture student slides blkwhite - Chapter 1 Overview...

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Chapter 1 Overview of Nutrition Introducing the nutrients What is a nutrient ? –Provided in diet –Needed for growth and maintenance –Essential • Carbohydrates • Proteins Lipids (Fats) • Vitamins • Minerals • Water Regulates Body Processes Energy Classes of Nutrients
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You Are What You Eat Energy from Foods Kilocalorie yield from nutrients Lipids = 9 kcal / gram Carbohydrates = 4 kcal / gram Proteins = 4 kcal / gram Measured in kilocalories (kcal) Calculating Kilocalories from Foods 1 cup of whole milk contains: 12 grams (g) of carbohydrates 8 grams (g) of protein 8 grams (g) of fat How many kilocalories (kcal) are in one cup of whole milk? 12 g of carbohydrates x 4 kcals / g = 48 kcal 8 g of protein x 4 kcal / g = 32 kcal 8 g of fat x 9 kcal / g = 72 kcal Total kilocalories : 48 kcal + 32 kcal + 72 kcal = 152 kcal
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8 gram fat x 9 kcal / gram = 72 kcal (72 kcal / 152 kcal) x 100 = 48% kcal from fat 1. Fat kcal / cup : 2. Total kcal / cup : (See previous slide) 152 kcal 3. Divide fat kcal by total kcal x 100 What % of kcal in whole milk come from fat?
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