NutritionSimSpring_2011

NutritionSimSpring_2011 - Nutrition Brown , A....

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Nutrition Brown , A. Understanding Food, Thomson/Wadsworth Water Carbohydrates Lipids Proteins Vitamins and Minerals
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Basic Nutrient Groups Carbo- hydrate Vitamins Minerals Lipid Protein Water
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Nutrients in Humans
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Water 55-60 % of the body is Water Critical nutrient Medium of bio-chem Rxs of the body. Transportation system in the body - Carry nutrients to cells; remove waste from cells; carry RBC, WBC, antibodies, oxygen, CO 2 Maintain body temperature.
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States of Water Ice (0C or 32F); Steam (100C or 212F)
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Carbohydrates Sugars, Starches, and Fibers Plant – main source is photosynthesis Carbon dioxide (CO2)+ water (H2O)+ sun energy glucose (CHO) and oxygen (O2)
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Carbohydrates Monosaccharides Disaccharides Polysaccharides Digestible Plant starches Sucrose Maltose Lactose Undigestible Fiber Glucose Fructose Galactose Classifications of Carbohydrates
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Monosaccharides
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Disaccharides
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Polysaccharides Starch α 1,4 linkage (digestible) Cellulose β 1,4 linkage (crude fiber; water-insol; holds water)
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Fiber - Polysaccharides Indigestible by human Whole grains; bran; fruit; and veg. Absorb more water, Digestive tract can move smoothly. Increase fecal bulk; eliminate waste quickly Lower risk of colon cancer, cardiovascular diseases
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Important Functions: 1. Concentrated energy – 1 gm = 9 kcal 2. Insulation effects from physical 3. Essential fats = Omega 3 & Omega 6 4. Transfer fat-soluble vitamins such as A, D, E, K. 5.
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NutritionSimSpring_2011 - Nutrition Brown , A....

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