Sökning: "Ultracentrifugation"

Visar resultat 1 - 5 av 27 avhandlingar innehållade ordet Ultracentrifugation.

1. 1. Wheat Flour Dough-Rheological and Structural Aspects

   Författare :Helena Larsson; Livsmedelsteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; starch gel; gluten; water distribution; lipids; starch granule surface; starch content; mixing; ultracentrifugation; structure; rheological measurements; wheat flour dough; phase separation; ethyl hydroxyethyl cellulose; Food and drink technology; Livsmedelsteknik;

   Sammanfattning : The thesis presents a rheological study on wheat flour dough, in relation to the structural influence of the different dough constituents, added components and mixing time. Rheological investigations have been focused on measurements at small deformations, including dynamic oscillation and stress relaxation, although complementing measurements have been performed in large deformation viscosity experiments. LÄS MER

3. 2. Characterization of Amino Acid tRNA Ligases using the Analytical Ultracentrifuge

   Författare :Lars Lundvik; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; amino acid tRNA ligase; analytical ultracentrifugation;

   Sammanfattning : ABSTRACT. Quaternary structures of amino acid tRNA ligases/synthetases (aaRS) in the native as well as in denatured forms were examined by molecular weight determinations (paper I-IV). Analytical ultracentrifugation, gel electrophoresis, gel chromatography were used in these investigations. LÄS MER

4. 3. Utilization of Andean grain flours in the development of wheat flour dough

   Författare :Sander Jonathan Pérez Villarroel; Avdelningen för livsmedel och läkemedel; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; Wheat; Andean grains; Amaranth; Amaranthus caudatus; Canahua; Chenopodium pallidicaule; Quinoa; Chenopodium quinoa; Dough; Substitution; Ultracentrifugation; Phase separation; Dough composition; Macroscopic separation; Freezable water; Textural properties; Compression; Uniaxial tension; Biaxial tension; Principal component analysis; Partial least square regression; Bread;

   Sammanfattning : Bread dough was studied in relation to three Andean grain flours, quinoa (Chenopodium quinoa), amaranth (Amaranthus caudatus) and canahua (Chenopodium pallidicaule), as partial replacements for wheat flour with the perspectives of dough and breadmaking. This thesis deals with the understanding of both dough as a complex system, consisting of various water-filled polymers, and dough as a viscoelastic material, with different responses to deformations, in order to contribute to possibilities for improvements in dough analysis and development of novel products. LÄS MER

5. 4. Diagnostic methods for demonstration of intrathecal synthesis of immunoglobulines within the central nervous system

   Författare :Sten Öhman; Linköpings universitet; []
   Nyckelord :MEDICINE; MEDICIN;

   Sammanfattning : This thesis is based upon studies of quantitative and qualitative determinations of immunoglobulins A, G, and M (lgA, IgG, and IgM) in cerebrospinal fluid (CSF) and in serum. Inflammatory diseases, such as multiple sclerosis and infections (e.g. LÄS MER

7. 5. Isolation Strategies and Proteomic Characterization of Extracellular Vesicles

   Författare :Aleksander Cvjetkovic; Göteborgs universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Extracellular vesicles; Exosomes; Colorectal cancer; Proteomics;

   Sammanfattning : “Extracellular vesicles” is the collective term used to describe vesicular entities that are released from cells into the extracellular environment. These vesicles are composed of a delineating lipid membrane and its cargo which can comprise of bioactive molecules such as lipids, RNA, DNA and proteins which can be shuttled between cells and thus function as a means of cell-to-cell communication. LÄS MER