BIO 196 1st Edition Lecture 9Outline of Last Lecture I. DeaminationII. Sources and quality of amino acids and proteins in dietIII. Dietary proteinIV. BV Biological ValueOutline of Current Lecture I. RDA for ProteinII. After age 30?III. New RDA for adults?IV. Protein and weight controlV. NAS Institute of Medicine’s 2002 recommendationVI. How much is too much?VII. Rabbit starvation syndromeVIII. Why eat plant proteins?IX. World hungerX. Chronic hunger Current LectureI. RDA for Proteina. RDA: 0.8g/kg/day desirable body weightb. International Society of Sports Nutritioni. 1.4-2.0 g/kg/dayii. For people who work out hours per day, or manual labor jobsiii. People who train endurance such as marathonsThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best Used as a supplement to your own notes, not as a substitute.II. After age 30?a. 25-30 g 3 times a day does a better job of repairing proteins if eaten 3 times a dayIII. New RDA’s for adults?a. Lower efficiency in protein utilization b. Lower in “anabolic drive” for development of lean tissuec. *After age 30 Diet and Physical Activity become more and more importantIV. Protein and weight controla. Satiety (messages telling you that you are full) and Satiation (messages that you are not hungry even though you see food)b. Weight loss diets- need plenty of protein; increases satiation, thermogenesisc. Protection of lean mass; 15% loss of lean tissue versus 30-40% loss of lean tissue!d. Exercise can help preserve lean tissue; especially strength training V. NAS Institute of Medicine’s 2002 recommendationa. 10-35% of kcals from proteinb. Average intake varies (65-100g per day)VI. How much is too much?a. >40% of total kcals can lead to deathi. Hyper aminoacidemia; hyperammonemia nausea and diarrheaii. Limit to the amount of urea the liver can excrete (ammonia, blood gets acidic)VII. Rabbit starvation syndromea. Explorers resorted to rabbits; lacked fat and no source of carbs in the cold winterVIII. Why eat plant proteins?a. Inexpensive, better for environment, widely availableb. Environment will suffer more if people who are protein deficient start eating animal proteinIX. World Hungera. 40-50% of population in many countries is childreni. Hard to solve your own problems if this much of your country is kidsX. Chronic hungera. Affects 870 million; 98% are in developing countriesb. Means on a daily basis a person lacks a necessary amount of nutrientsc. 2/3 in Asia/Pacificd. Number has gone down even though the world population has gone upe. Now 1 in 8
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