Sökning: "Aqueous two-phase system"

Visar resultat 16 - 20 av 30 avhandlingar innehållade orden Aqueous two-phase system.

1. 16. Selective extraction systems for detection and purification of membrane proteins

   Författare :Ulf Sivars; Biokemi och Strukturbiologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; partitioning; Aqueous two-phase systems; separation; membrane proteins; detergent; micelle; polymer; Biochemistry; affinity; Metabolism; Biokemi;

   Sammanfattning : Increased understanding of membrane proteins is important for characterization of biochemical processes. Improved membrane protein isolation methods is a key issue for effective functional and structural determination of the large amount of unknown membrane proteins. LÄS MER

3. 17. Nucleic Acids: Innovative Methods for Recovery, Clarification and Purification

   Författare :Tiago Matos; Tillämpad biokemi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : The importance of nucleic acids in pure form for preparative and analytical perspectives, have increased constantly, demanding the development of new and more efficient methods for their recovery and isolation. This thesis describes a series of different innovative methods for recovery and purification of these biomolecules. LÄS MER

4. 18. Regenerable Organochalcogen Antioxidants : An Explorative Study

   Författare :Jiajie Yan; Lars Engman; David J. Procter; Uppsala universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; autoxidation; antioxidant; selenium; tellurium; regenerable; multifunctional; radical-trapping; hydroperoxide-decomposing; co-antioxidant; Chemistry with specialization in Organic Chemistry; Kemi med inriktning mot organisk kemi;

   Sammanfattning : Antioxidants are widely used to protect organic materials from damages caused by autoxidation, an oxidation process that occurs under normal aerobic conditions. In this thesis, novel multifunctional organoselenium and organotellurium antioxidants were designed, synthesized, and evaluated in search for compounds with better radical-trapping capacity, regenerability, and hydroperoxide-decomposing ability. LÄS MER

5. 19. A comparative study on sugar beet root (Na⁺+K⁺)MgATPases isolated by different methods

   Författare :Göran Wingstrand; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : Msiribrane bound (Na+ + K+)MgATPases from homogenates of young sugar beet roots were prepared either by differential centrifugations or by an aqueous two-phase system. The properties of the MgATPases were deter- mined in the preparations. Potassium [K (° Rb )] uptake into roots of intact sugar beets was also studied. LÄS MER

7. 20. Hemicelluloses from Agricultural and Forestry Crops Isolation, Characterisation, and Enzymatic Hydrolysis

   Författare :Alexandra Andersson; Biokemi och Strukturbiologi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Proteiner; enzymologi; Physical chemistry; Fysikalisk kemi; enzymology; hydrogels; Plant biochemistry; Växtbiokemi; Proteins; a-galactosidase; b-mannanase; hemicellulase; corn fibre; barley husks; spruce; size-exclusion chromatography; arabinoxylan; microwave irradiation; steam pretreatment; membrane filtration; hemicellulose; galactoglucomannan;

   Sammanfattning : Hemicelluloses are tremendous sources of renewable raw materials, which utilisation have the potential to be highly increased in the future. Hemicelluloses are among the major groups of compounds in plant cell walls, together with cellulose and lignin. These three components are closely associated, making them difficult to separate from each other. LÄS MER