Nutrition Concepts_Collison_Date_030410

Nutrition Concepts_Collison_Date_030410 - Chapter 6-...

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The Chemists View of Proteins: A. Atoms 1. Carbon, hydrogen, oxygen, nitrogen B. Amino Acids 1. Caron, hydrogen 2. Amino group 3. Acid group 4. Side group or side chain C. More complex than carbohydrates or fats D. Twenty amino acids 1. Different characteristics 2. Essential amino acids- must come from diet 3. Nonessential amino acids- body can make them a. Conditionally essential E. Proteins 1. Peptide bonds link amino acid a. Condensation reactions 2. Amino acid sequencing 1. Primary structure- electrical bonds 2. Secondary structure- electrical attractions 3. Tertiary structure- hydrophilic and hydrophobic 4. Quaternary structure- 2 or more polypeptides 5. Denaturation a. Disruption of stability b. Uncoil and lose shape c. Stomach acid Protein Digestion: A. Mouth- does not occur here B. Stomach 1. Hydrochloric acid denatures proteins 2. Pepsinogen to pepsin C. Small intestine 1. Hydrolysis reactions 2. Peptidase enzymes Protein Absorption : -Transport into intestinal cell
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This note was uploaded on 08/30/2010 for the course NTDT 200 taught by Professor Aljadir during the Spring '08 term at University of Delaware.

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Nutrition Concepts_Collison_Date_030410 - Chapter 6-...

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