Upload
jeremy-boone
View
221
Download
3
Tags:
Embed Size (px)
Citation preview
The elements C, H, O & N make up amino acids (AA) that are the building blocks (or mononmers)of PROTEIN.
Proteins are organic molecules Proteins are macromolecules that
contain many atoms. A single protein molecule may contain
10 or more AA linked in peptide chains/bonds
Proteins are macronutrients
R group Acid
group Amine group
NH2 O
R C C OH
H
Made of four parts:1. Amine group (NH2)
2. Carboxyl group (COOH)3. Single Hydrogen4. Variable Group – N bonds (determines
type & name of amino acid)
Essential AA Nonessential AA
Histidine Alanine
Isoleucine Arginine
Leucine Asparagine
Lysine Aspartic Acid
Methionine Cysteine
Phenylalanine Glutamic acid
Threonine Glutamine
Tryptophan Glycine
Valine Proline
Serine
Tyrosine
New growth of tissues, hormones and enzymes
Building blocks of body components Maintain fluid balance Contribute to acid/base (pH) balance Immune function Gluconeogenesis (Energy if needed) 4 kcals/gram
Provide the 9 essential amino acids
Provide the essential amino acids or nitrogen to make the nonessential amino acids
High quality protein or complete protein› Contains ample amount of all 9
essential amino acids These foods include beef, chicken,
fish, eggs, milk and just about anything else derived from animal sources.
Low quality protein or incomplete protein› Deficient or low in one or more essential
amino acids› Generally include vegetables, fruits,
grains, seeds and nuts.
Grains Legumes Seeds & Nuts
Vegetables
Barley Beans Sesame Seeds
Leafy Greens
Corn Meal Lentils Sunflower Seeds
Broccoli
Oats Peas Walnuts
Rice Peanuts Cashews
Pasta Soy Products
Other Nuts
Whole Grain Breads
Copyright © The McGraw-Hill Companies, Inc. Permission required for reproduction or display.
Heat/acid/alkaline/enzymes Result in alteration of the protein’s three
dimensional structure
Cooking and/or digestion eventually break down proteins to amino acids
Amino acids are transported in the body via the circulatory system
Homework Go to Teacher page Go to the “LINKS”
section Click on “How much
protein do I need? “ Answer the
questions in your notebook.
Somewhat less efficient (than animal protein)
Lacking in one or more essential amino acid
Low in cholesterol and saturated fat High in dietary fiber, phytochemicals
Homework Go to Teacher web Go to the “LINKS” section Click on “Gluten “ Answer the questions in your
notebook.
Soy protein is similar to animal protein (used in school lunches)
Video http://www.youtube.com/watch?v=OS6pS
nejzZU&feature=related
Homework Go to Teacher web Go to the “LINKS” section Click on “Soy. What is it good for?“ Answer the questions in your
notebook.
Homework Go to Teacher web Go to the “LINKS” section Click on “Protein & Food
Production“ Answer the questions in your
notebook.