NUTR SCI 132 Final: First 3 Exams Review
Document Summary
Dextrin intermediate breakdown of starch, shorter = sweeter: lignin wood, fiber xi. Fiber: soluble binds to bile and cholesterol and excretes it, slows. Insoluble causes more powerful peristalsis carbohydrate digestion: u. s. average is 11-12g per day, 25-35g recommended, 50-75g well tolerated xii. Insufficient protein (edema) water pools in extracellular space: athletes need 1-1. 5g per kilogram of body weight ix. Average intake is 70g for females and 90g for males: excess nitrogen is converted to ammonia and then urea, kidneys work harder xi. Protein quality: positive nitrogen balance, nine eaa, biological value egg = 100, milk = 93, gelatin = 11 xii. Vegetarians: lacto-vegetarian plants + dairy, lacto-ovo-vegetarians plant + dairy + eggs, vegan plants only xiii. Transport: absorbed into mucosal cells, packaged into chylomicrons in the lymphatic system, emptied into blood stream via thoracic duct, delivered to cells and liver xii. Consumption: 41% in 1977, 36% in 1986, overall calories are up due to sugar.
