PPT-Lecture 5. Food proteins.

Nutritive function of proteins Quality evaluation Proteins a major food macrocomponent Food is the major source providing proteins to human body food with animal origin food with plant. Effect of pH and . Ionic Strength . on Solubility of Proteins. INTRODUCTION. Food Industry:. - Functional Properties - Nutritional. Gelation. Foaming. Change in viscosity. Examples. : . Whole eggs, egg yolk, egg albumen, whey solids, non-fat dry milk . . from lack of structure to. pleiotropy. of functions. Lilia Iakoucheva. University of California, San Diego. OUTLINE. Characterization . and properties of IDPs. . Functional repertoire of IDPs. Levels of Protein Structure. Primary 1º Structure. The primary structure is simply the sequence of amino acids in a protein.. Chains of amino acids are written from the amino terminus (N-terminus) to the carboxyl terminus (C-terminus).. Dialysis. (. Isolation Of Lactate Dehydrogenase Enzyme . ). BCH 333 [practical]. Objective:. 1-To . learn the technique of isolation of proteins on the basis of their solubility. . salting . in, salting out of proteins . Unit objectives:. Identify amino acid classifications based on nutritional use and chemical properties of side chains. Describe the primary, secondary, tertiary and quaternary structures of proteins. proteins of milk, meat and eggs.. Milk composition. Deficient in iron and vitamin C. Milk proteins. Total protein content in milk – 2.9 – 3.5%. Two major types of milk protein. Caseins (80%). Whey proteins: (20%). On-Farm Supply Issues . Hans H. Stein. University of Illinois . http://nutrition.ansci.illinois.edu. Current Research. Energy and nutrient digestibility in pigs. Amino Acids. Minerals. Lipids. Carbohydrates (starch and fiber). 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. Proteins are polymers of amino acids produced by living cells in all forms of life.. A large number of proteins exist with diverse functions, sizes, shapes and structures but each is composed of essential and non-essential amino acids in varying numbers and sequences.. 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. . Each amino acid (aa) shares a common structure; i.e. an amine (NH. 2. ) group, an acid group (COOH), and a central carbon atom bonded to hydrogen and to a side chain (R).. The side chains qualify aas as acidic, basic, neutral, aromatic, and sulphur-containing amino acids.. Alternative routes of administration. Alternative Route of Administration. . Parenteral administration. . has disadvantages (needles, sterility, injection skill) compared to other possible routes.. Protein . is a very important nutrient. It makes up most of our body cells, tissues and fluids. .. Protein . Deficiency. -Leads to Kwashiorkor in children Happens mostly in impoverished countries where there is a lack of protein rich foods. . proteins of cereals and legumes.. Cereals . http://jxb.oxfordjournals.org/content/53/370/947.full.pdf+html. Cereals are the . most important crops in the . world. Basic food in European countries.. .