ANFS102 Lecture Notes - Lecture 20: Powdered Milk, Cottage Cheese, Carboxylic Acid
11 Apr 2016
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Document Summary
Product development properies: amino acids are the building blocks of proteins. Central c atom atached to carboxyl group, amino group, h atom and another speciic side chain. Zwiterions: amino group and carboxyl groups are both ionized (nh3+ and coo-) Amphoteric in that aa can behave as an acid or a base depending on the ph of the environment. Acid or proton donor, posiively charged amino group donates a h+ ion. Base negaively charged carboxyl gains a h+ ion. Based on their side chains, amino acids have diferent properies. Nonpolar uncharged side chains are hydrophobic (alanine, valine, leucine, proline, methoinine) Polar uncharged side chains are hydropillic (serine, glutamine, cysteine) form hydrogen bonds in proiens. Negaively charged aa (acidic) (asparic acid, glutamic acid. Ionic interacions form between these two groups (strong bonds) Bacterial enzymes can reduce biter taste of phenylalanine, valine, leucine, hisidine. Amino acids are joined by pepide bonds. Side chains project alternately and lead to conformaion.
