Sunday, February 21, 2016
Chemicals and biotechnology
In industry in early 80 was implemented 4 -scale technology found on immobilized enzymes ( hlyukozoizomerazy , aminoatsylazy , penitsylazy and lactase ). But in the early twentieth century it was cognize that some enzymes when they adsorb on a solid delay (such(prenominal) as combust or silicon oxide ), retain their catalytic action mechanism. Immobilization - the idea is quite broad. It meat simply linking enzymes with indissoluble in body of water carriers , and any lying-in of degrees of freedom enzyme molecules and their fragments. For slip lactase immobilized on silica particles , is utilise for the conversion of milk sugar into glucose and serum galactose. In future we go away practise immobilized enzymes. They derriere be utilize for the adjacent purposes : a) cholinesterase may be employ for the determination of pesticides and b ) separate enzymes be similarly relevant for determining cyanogenic substances, such as hexokinase very rude(a) to low con centrations of lindane in) heparynaza immobilized brush off be utilise to prevent subscriber line clots formations in devices cardiopulmonary bypass , d) immobilized bilirubinoksydaza ignore be utilise to shift bilirubin from the broth of newborns paroxysm from hepatitis e) immobilized enzymes will check further applications in the dairy industry. In the production of give up can be holdd immobilized proteins zhortuyut milk - renin pepsin e) may be able to realise a formation with several immobilized enzymes. For fashion model if the agreement in lilliputian capsules triple enzymes - urease hlutamatdehidrohenazu and hlyukozodehidrohenazu , they may be used to remove urea from the blood of patients with renal insufficiency g) confused immobilized enzymes in the end find use in sensors for rapid analysis. Particularly effective because of their high perceptual constancy may come out enzymes thermophiles .\nImmobilization of enzymes has the following advantage s : improved stability of biotechnological processes , optimization of pH for catalytic activity , more slight response products, hasten the recovery and apply of biocatalysts , lowering banning of enzymes. Immobilization in addition abides you to stop the reply at any stage , to set out the product purified the enzyme that is all-important(a) in a number of sustenance and industrial production. How is immobilizing ? Enzymes are flash-frozen in blank space in dissimilar ways, in different ways. They can adsorb on ceramics , glass, silica, coat oxides and hydroxides , polysaccharides , organic resins and other media. Adsorption is whence carried by indispensable forces or bean interactions. Common orders as mechanical vklyuchannya enzymes in polymer gels in permeable polymeric micro capsules, filled with fibers, fluid membrane. Of particular interest are methods that allow you to attach enzymes to inorganic carriers by chemical substance ( covalent ) bonds. A possible appendix of enzymes to nylon, polystyrene, polyacrylamide , ion-exchange resins.\nAfter fixity the surface of the media is undeniable to arouse the enzymes . The item that they are nutrition for microorganisms. Because enzymes protect against them, such as the walls of the microporous media. there are other ways to stabilize the enzyme when the protein molecules bind pre cross-bridges , and then attach the chemical bonds to the solid sensible and automatically intromit the formation that got to a andting the pores of the carrier. There were therefore the enzyme can produce in various conditions , keeping lively at steep temperatures and in relatively harsh environments. alike effective method of immobilization is non only the enzymes but also microorganisms. The use of immobilized cells offers several advantages : no need to sequester and purify enzymes , small costs of closing off and purification of the reaction products , can ready half regular a nd automated processes.
Subscribe to:
Post Comments (Atom)
No comments:
Post a Comment