PPT-Proteins and Denaturation

Learning Targets Understand denaturation of protein Tell some of its causes and effects Complete protein comes from animal products Incomplete protein comes from the SEEDS. nanocomposites. By. . Nahla A. El-Wakil. Cellulose & Paper Dept.. National Research Center. Cairo, Egypt. Recycling Expo-2015 . Recycling Expo-2015 . Protein-Based . nanocomposites for Food Packaging. PROTEINS – (DR. TRAISH) Introduction to Proteins - Proteins are abundant and functionally diverse molecules - They participate in cell regulation at all levels - They share a common structural Importance, Characteristics, Structure, Classification, . Denaturation. Importance. Major structural components of animal tissues. Involved in the maintenance of life processes as communication (nerves), defense (antibodies), metabolic regulation (hormones), biochemical catalysis (enzymes), and oxygen transport (hemoglobin). Proteins account for more than 50% of the dry mass of most cells. Protein functions include structural support, storage, transport, cellular communications, movement, and defense against foreign substances. Amino . Acids. In a transamination reaction, . aspartate transaminase (AST) . catalyzes the reversible transfer of an amino group between glutamate and aspartate.. an . α. -amino group is transferred from an amino acid to an . Denaturation of a protein occurs when the interactions of residues that stabilize tertiary or quaternary structures are disrupted, which destroys the shape and renders the protein biologically inactive.. 2.4 Proteins. IB Biology SFP - Mark . Polko. 2. IB Biology SFP - Mark Polko. Understandings. :. Nature. . of science. 3. IB Biology SFP - Mark Polko. Applications. and . skills. Essential idea:.  Proteins have a very wide range of functions in living organisms. Most abundant molecule in cells making up 50% or more of their dry weight. Every protein has a unique structure, or shape. Allows it to perform a specific function. Enzymes are proteins that function as catalysts for many reactions in foods. 6. 6.1 Differentiate . between essential amino acids and nonessential amino acids.. 6.2 List . the functions of protein in the body.. 6.3 List . the steps for protein digestion and absorption in the body. . properties in . food . products. Proteins . and . their . functional properties in food . products. Most . foods contain . proteins, . such as collagen in meat, gluten in wheat flour and albumin in egg white. . The concentration of many of these are affected by pathological processes; they are therefore measured.. They contain disulphide bonds.. Functions of plasma proteins include:. Transport. Maintaining plasma . . Food science in action. Barbara Monks. www.thecookeryteacher.com. Thursday 28 March 2019. Food Science in action. What will be covered?. Why is it important to know about the functions of ingredients?. Denaturation. Balance of forces. Consequences of denaturation. Effect of Temperature on Rate of Enzyme Action. rate. denaturant. Denaturation. Denaturation is a phenomenon that involves transformation of a well-defined, folded structure of a protein, formed under physiological conditions, to an unfolded state under non-physiological conditions.. Size. Colloidal solutions. Charge. UV absorption. Solubility. Physical properties. Molecular weight. :. Vary from. 6000 . to million Daltons (Da) . Protomeric. proteins. : 50. . 000 . to. 100. .