Isolation and Purification of Enzymes, Molecules, Physico-Chemical Organization, Proteinaceous, Extraction, Crude Extract

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Biocatalysis and Enzyme Biotechnology Biocatalysis and Enzyme Biotechnology - Introduction Some Research Activities Involving Enzymatic Synthesis Properties of Enzymes Parameters Affecting Enzymatic Reactions Definitions of Some Parameters used for Describing Key Properties of Enzymes Medium for Enzymes Aqueous vs Organic Solvent Selectivity of Enzymes Types of Enzymes Biomimetic Catalysts Enzymes Commonly Used in Organic Synthesis Extremozymes Cofactor Dependent Enzymes and Cofactor Regeneration Modular Enzymes Coenzymes Use of Enzymes Medical and Clinical Uses Drugs for Digestive Disorders Industrial Uses Uses of Industrial Uses Textile Industry Uses of Leather Industry Uses of Paper Industry Cellulase Free Xylanases Uses of Food Industry Isolation and Purification of Enzymes

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Isolation and Purification of Enzymes
Enzymes are unstable molecules with a definite physico-chemical organization. Even a slight change in this organization reduces the activity of enzyme, so that sometimes the enzyme is totally inactivated. Therefore, the enzymes have to be isolated under controlled conditions of pH, ionic strength and temperature. Since they are proteinaceous in nature, standard extraction and purification procedures for enzymes are the same as those used for proteins except that the activity of the enzyme is assayed at each of the following four steps of extraction, preparation of crude extract, purification and processing.

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Extraction of Enzymes Preparation of Crude Enzymes Purification of Enzymes Chromatography Adsorption Chromatography Ion Exchange Chromatography Gel Filtration Chromatography Affinity Chromatography Electrophoresis Immobilization of Enzymes or Whole Cells Techniques for Immobilization Adsorption Method Covalent Binding Method Cross Binding Method Some Reagents Used to Immobilize Enzymes by Cross Linking Entrapping Method Entrapping by Microencapsulation Requirements for Commercial use of Immobilized Enzyme Systems Enzyme Carrier Systems Some Applications of Immobilized Enzymes and Whole Cells Reactor Types Operating Strategy Stability of Immobilization and Protection of Immobilized EnzymesCells Some Examples of the Use of Immobilized Enzymes Cells Industrial Biocatalysis Biotransformation of Polyunsaturated Fatty Acids PUFAs Hydrolalse Mediated Biotransformations Oxidative Biotransformation Enzyme Engineering