Sökning: "membrane disintegration"

Visar resultat 1 - 5 av 11 avhandlingar innehållade orden membrane disintegration.

1. 1. Quality of Frozen Rainbow Trout. Effects of different freezing and thawing treatments

   Författare :Katarina Nilsson; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; membrane disintegration; liquid loss; centrifuged tissue fluid; fish; lysosomal enzyme; frozen storage; glazing; freezing; sensory quality; rainbow trout; thawing;

   Sammanfattning : The effects of different freezing, frozen storage and thawing treatments on the muscle tissue of farmed rainbow trout (Oncorhychus mykiss) were studied. Biochemical measurements were correlated to sensory estimated quality changes. The freezing process affects the proteins, the lipid fractions and the membrane structures in the fish muscle. LÄS MER

3. 2. Cytotoxic Cyclotides : Structure, Activity, and Mode of Action

   Författare :Erika Svangård; Per Claeson; Lars Bohlin; Ulf Göransson; John H. Cardellina II; Uppsala universitet; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Pharmacognosy; cyclotide; cytotoxic; cancer; cyclic cystine knot; Viola; Violaceae; liposome; hollow fibre; homology modelling; mass spectrometry; amphipathic; structure–activity; tumour; membrane disruption; necrosis; Farmakognosi; Pharmacognosy; Farmakognosi;

   Sammanfattning : Cyclotides are small cyclic plant proteins, and this thesis addresses their cytotoxic structure-activity properties and their mode of action on human cancer cell lines. Cyclotides were isolated from Viola odorata and Viola tricolor; three novel cyclotide sequences and two known sequences, but of new origin, were identified using mass spectrometry, amino acid analysis, and Edman degradation. LÄS MER

4. 3. Probing the Nano-Bio Interface Using Surface Based Analytical Techniques

   Författare :Rickard Frost; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nanotoxicology; cell membrane; nanomedicine; melanophores; QCM-D; nanomaterial; DPI; AFM; supported lipid bilayer;

   Sammanfattning : In recent years, the use of manufactured nanomaterials has been rapidly increasing in a wide range of application areas. Among others, these areas of application include cosmetics, medicine, clothing, and sporting goods. The small size of nanomaterials offers unique properties that are not possible to obtain by the same material in bulk. LÄS MER

5. 4. Mass Transport in Wood Disintegration: Implications for the Pulp and Paper Industry

   Författare :Roujin Ghaffari; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; mass transport; specific ion effects; impregnation; Kraft pulping; ionoSolv; ionic liquids; delignification;

   Sammanfattning : Efficient delignification and fractionation processes are essential in the pulp and paper industry. Mass transport events in wood fractionation are of great importance, specifically in two main stages, namely, the mass transport of chemicals into wood and the mass transport of degraded lignin molecules out of cellulose confinements. LÄS MER

7. 5. Physico-Chemical Investigations of Bilayer Discs and Related Lipid Structures Formed in Liposomal Systems Intended for Triggered Release

   Författare :Maria Sandström; Katarina Edwards; Mats Almgren; Tommy Nylander; Uppsala universitet; []
   Nyckelord :Physical chemistry; liposome; triggered release; pH-sensitive liposomes; temperature-sensitive liposomes; drug partitioning; cryo-TEM; discs; Fysikalisk kemi;

   Sammanfattning : This thesis describes results from fundamental studies of liposomes intended for drug delivery and pH or temperature triggered release. In addition, the effect of lipid composition on bilayer disc formation and a potential application of the bilayer discs were investigated. LÄS MER