* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download How Much Protein Do You Need key
Ribosomally synthesized and post-translationally modified peptides wikipedia , lookup
Paracrine signalling wikipedia , lookup
Gene expression wikipedia , lookup
G protein–coupled receptor wikipedia , lookup
Amino acid synthesis wikipedia , lookup
Biosynthesis wikipedia , lookup
Point mutation wikipedia , lookup
Ancestral sequence reconstruction wikipedia , lookup
Expression vector wikipedia , lookup
Magnesium transporter wikipedia , lookup
Genetic code wikipedia , lookup
Bimolecular fluorescence complementation wikipedia , lookup
Biochemistry wikipedia , lookup
Metalloprotein wikipedia , lookup
Interactome wikipedia , lookup
Western blot wikipedia , lookup
Nuclear magnetic resonance spectroscopy of proteins wikipedia , lookup
Protein purification wikipedia , lookup
Protein–protein interaction wikipedia , lookup
How Much Protein Do You Need? Recall How Your Body Use Protein… Name the most abundant protein found in your body. Collagen List as many of the eight uses of protein plays in your body, minimum of four: Buffer pH, structural & mechanical support, enzymes, fluid balance, transport proteins, support immune system, provide energy, improves satiety How Much Protein Do You Need? p. 194 I. Healthy adults consuming a balanced diet with adequate amounts of protein are typically in nitrogen ___balance____. a. A Body that __retains_____ more nitrogen than it excretes is in __positive____ nitrogen balance. 1. This often occurs in babies, children, teenagers, and pregnant women. (Growth is occurring) b. ___Negative___ nitrogen balance occurs when the body ____excretes___ more nitrogen than is consumed due to some physical impairment. Ex. serious injury, infection, __malnutrition____, or other trauma can tip a body into negative nitrogen balance. Notes on Nitrogen Balance animation: 16% of an amino acid is made up of nitrogen II. Protein quality is determined by the protein’s digestibility and the types and amounts of amino acids the protein contains; Not all protein is “created equal” a. Digestibility of proteins vary based on their source. 1. ___Animal______ proteins are generally more digestible than plant proteins. __90___ to 99% of proteins from animal sources are digestible 2. Only 70 to _90__% of plant proteins are typically digestible. b. The type and amounts of amino acids contained in the protein, or the amino acid profile, affect protein __digestibility_(quality)___ 1. A protein with all nine essential amino acids, along with some of the 11 ____non_essential amino acids, is a complete protein 2. An incomplete protein is low in ___one___ or more essential amino acids Nutrition & the Human Body-Ch 6 Proteins… How Much Protein Do You Need? An incomplete protein can be combined with another meat or plant proteins to be upgraded to a complete protein What is a limiting amino acid? An amino acid that is in the shortest supply in an incomplete protein What are complemented proteins? Do they have to eaten at the same time? Incomplete proteins that are combined with modest amounts of animal or soy proteins or with other plant proteins that are rich in the limiting amino acid; these do not have to be eaten at the same meal but should be eaten during the same day. 3. Soy and gelatin are two exceptions to this. How do soy and gelatin differ, source & protein-wise? Gelatin is an animal protein that is not complete (missing aa-tryptophan); Soy is a plant protein is a complete protein c. The protein digestibility corrected amino acid score (PDCAAS) takes into account both the amino acid profile and digestibility of a protein to give a good indication of its quality. What does PDCAAS represent? Protein Digestibility Corrected Amino Acid Score III. Protein intake in the diet can be measured as a percentage of total calories or as grams eaten per day. a. 10 to ___35___ percent of total daily calories should come from protein. Most adults in the US consume about _15__ percent of their daily calories from protein. b. Current recommendations for grams of protein needed daily is based on age and weight 1. Adults aged 19 and older should consume 0.8 grams of protein per kilogram of body weight. 2. Some athletes may have greater needs for protein, but these needs are generally met through increased food intake and a supplement is not needed The “Blue Zones” Sardinian Diet-ABC News What are the health benefits of eating the two types of traditional bread that are part of the Sardinian diet? Why is it important to “side show” meat? Why is it beneficial to eat cheese produced from grass-fed sheep? Nutrition & the Human Body-Ch 6 Proteins… How Much Protein Do You Need? Calculate Your Daily Protein Needs Circle your answer! 52 g/day 143 lb/ x 1 kg/2.2 lb x 0.8 g/kg = 52 g/day The Take-Home Message Protein quality is determined by the protein’s digestibility and by the types and amounts of amino acids essential versus nonessential it contains. Protein from animal foods is more easily digested than protein form plant foods. A complete protein, which is typically found in animal foods and soy, provides a complete set of the essential amino acids along with some nonessential amino acids. Plant proteins are typically incomplete, as they are missing one or more of the essential amino acids. Plant proteins can be complemented with protein from other plant sources or animal food sources to improve their protein quality. Adults should consume 0.8 gram of protein form each kilogram of body weight. In the US, men on average, consume more than 100 grams of protein daily, while women, on average, are consuming more than 70 grams—in both cases, far more than is needed. Nutrition & the Human Body-Ch 6 Proteins…