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Transcript
What are all these foods high in? Objectives • • To understand what protein is. To understand the difference between LBV’s and HBV’s. I know the structure of protein. I can understand the different functions of protein in the diet. I can give a few food sources. I know the structure of protein. I can understand the different functions of protein in the diet. I have some understanding about high biological and low biological value proteins and can name a few food sources. I know the structure of protein. I can understand the different functions of protein in the diet. I know the difference between high biological value proteins and low biological value proteins and can list food examples of each. I understand two lows make a high. Protein in the diet The building blocks of your body. Second source of energy from your diet. Helps the growth and repair of cells in your body. Without them your body will loose muscle so you can not generate energy. Protein in the diet Protein is a source of energy. Protein helps keep skin, hair, and nails healthy. Protein, like most other essential nutrients, is absolutely crucial for overall good health. What is a protein? + Amino acids = Protein 22 different types Our bodies can makes some of these but not all. Adults need to get the other 8 from foods. Children need to get the other 10 from foods. ESSENTIAL AMINO ACIDS Man Amino Acids Amino acids Where does protein come from? Animal Sources Plant sources •Meat, fish, dairy, eggs. •Beans, peas, lentils, nuts, seeds, cereals. •All contain the 8 ESSENTIAL AMINO ACIDS our body needs. •They do not contain 8 ESSENTIAL AMINO ACIDS. They have some •They have a high biological value missing. (except soya beans). (HBV). • They have a low biological value (LBV). HBV & LBV = 8 ESSENTIAL AMINO ACIDS inside = 7 ESSENTIAL AMINO ACIDS inside. NOT enough. = 5 ESSENTIAL AMINO ACIDS inside. NOT enough. Therefore it has a high biological value. Therefore they have a low biological value. 2 lows make a high Low biological value Low biological value High biological value Key Words High biological value Low biological value Amino acid Building blocks Essential Deficiency - Kwashiorkor Symptoms: Loose . when infants This weight happens Tissues waste away. are weaned from breast Ribs become visible. milk theirdigestion diet is is Fat bellyand because replaced with less nutritive affected. The body becomes frail and weak. food that does not contain Eyes appear sunken. complete proteins. Brain damage and death Deficiency - Kwashiorkor HBV Kwashiorkor Soya beans Protein Amino Acids LBV Essential Amino acids Cereals
