Molecule choline component of cell membranes and

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Unformatted text preview: osine Dipeptide (two AA) that has anti-oxidant properties Creatine Sports supplement used as an energy supplement, high energy molecule Choline Component of cell membranes and neurotransmitters LS 2N03 – Human Nutrition for Life Sciences D.M. Pincivero, 2013 10 MICRONUTRIENTS Very small molecules that we do not get energy from them, but they enable us to extract energy from macronutrients. Various enzymes that are involved in breaking up macronutrients require micronutrients. Vitamins • Organic compounds that contain carbon, hydrogen and other atoms (nitrogen, oxygen, phosphorus) Function: • Energy extraction from macronutrients • Calcium balance • Blood clotting 2 groups: 1) Water soluble: B vitamins (8) and vitamin C Subject to filtration by the kidney 2) Fat soluble: A, D, E, K Absorbed with dietary lipids More prone to toxicity Minerals • An inorganic nutrient that is needed for growth and regulation of normal physiology • 16 minerals Macrominerals: Major minerals required in the diet in larger amounts than the trace minerals. • Na, K, Cl, Ca, P, Mg, S Trace minerals: Required in small amounts in the diet. • Fe, Zn, Cu, Mo, Mn, Se, I, Fl WATER LS 2N03 – Human Nutrition for Life Sciences D.M. Pincivero, 2013 11 What is Energy? • An ability to cause changes in, or perform, work, heat and/or mass. • Common definition: ability to perform work. Forms of energy: • • • • • Mechanical Electrical Thermal Chemical Nuclear - moving physical objects moving charges (electrons) increasing temperature (randomness) binding/unbinding of bonds binding/unbinding of nucleons calorie • is the amount of energy needed to raise the temperature of 1 gram of water by 1 degree C. 1,000 calories = 1 kcalorie = 1 Calorie Energy density: amount of energy in a food source relative to its’ mass. Delivers a lot of calories per until mass (g). Nutrient density: amount of nutrients in a food source relative to its’ energy content. Opposite to energy densit...
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