Search for dissertations about: "RP-HPLC"

Showing result 1 - 5 of 13 swedish dissertations containing the word RP-HPLC.

2. 1. Essentially Lipids : Analytical methods for the characterization of lipid materials

   Author : Petter Olsson; Bengt Herslöf; Jan Holmbäck; Torgny Fornstedt; Stockholms universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Lipids; Chromatography; HPLC; Charged Aerosol Detection; Evaporative light scattering detection; mass spectrometry; Analytical Chemistry; analytisk kemi;

   Abstract : This thesis describes analytical methods for chromatographic characterizations of lipids in biological and technical systems.Lipids are a group of compounds with a central role in all known forms of life. In addition to the biological roles, lipids are also components in many products of our daily usage. READ MORE

4. 2. Analysis of Degradation Products from Wood and Methods for Detoxification of Lignocellulose Hydrolysates

   Author : Per Persson; Centrum för analys och syntes; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; galactoglucomannan; mass spectrometry; liquid chromatography; sugar degradation; detoxification; fermentation inhibitors; lignocellulose hydrolysates; Ethanol production; softwood; Analytical chemistry; Analytisk kemi; countercurrent supercritical fluid extraction;

   Abstract : In order to produce fuel ethanol from lignocellulose, it is necessary to hydrolyse the sugar-containing constituents hemicellulose and cellulose. During acid hydrolysis, a number of compounds are formed or liberated in addition to the fermentable monomeric sugars. READ MORE

5. 3. Improved Techniques for Protein Analysis Focusing on Membrane Proteins and Hydrophobic Peptides

   Author : Theres Redeby; Åsa Emmer; Jonas ergquist; KTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Integral membrane proteins; Hydrophobic peptides; Sample handling; MALDI-TOF-MS; Structured sample support; CE; fraction collection; microchannel; Analytical chemistry; Analytisk kemi;

   Abstract : In this thesis, the vital cell functions performed by integral membrane proteins (IMPs) are briefly discussed. Such proteins are under-represented in most protein studies due to the hydrophobic nature of IMPs, which seriously complicate their solubilization, sample handling, preparation, separation and analysis. READ MORE

6. 4. Novel Methods for Synthesis of High Quality Oligonucleotides

   Author : Andrey Semenyuk; Marek Kwiatkowski; Ulf Landegren; Joachim W. Engels; Uppsala universitet; []
   Keywords : Organic chemistry; oligonucleotide; solid-phase synthesis; RNA synthesis; phosphoramidite; abasic sites; depurination; 2 -O-DTM; protecting group; cartridge; conjugate; dithiomethyl linker; base-stable linker; oligonucleotide purification; nucleoside; Organisk kemi;

   Abstract : The first part of the work describes a procedure of oligonucleotide purification using a reversed-phase cartridge. The developed method employs a very efficient yet mild oligonucleotide detritylation on the cartridge support allowing fast purification of oligonucleotides regardless of their 5´-modification. READ MORE

7. 5. Determination of Fat-Soluble Vitamins in Foods Based on Supercritical Fluid Extraction

   Author : Charlotta Turner; Kemiska institutionen; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Supercritical fluid extraction; Solvent collection; Solid phase trapping; SFE; Selectivity; Retinol; Milk powder; Lipase; Food; Enzymatic hydrolysis; Alcoholysis; Candida antarctica; Tocopherol; Vitamins; Analytical chemistry; Analytisk kemi;

   Abstract : Sample clean-up methodologies based on supercritical fluid extraction (SFE) have been developed for determination of fat-soluble vitamins in foods. This thesis focuses on method development, stressing important issues concerning sample pre-treatment, extraction conditions and collection parameters. READ MORE