Sökning: "surfactant"

Visar resultat 1 - 5 av 50 uppsatser innehållade ordet surfactant.

1. 1. In-Situ Investigation of Particle Assisted GaSb Nucleation Using Environmental TEM

   Master-uppsats, Lunds universitet/Centrum för analys och syntes

   Författare :Aidas Urbonavicius; [2023]
   Nyckelord :ETEM; Nucleation; GaSb; Nanowires; Materials chemistry; Technology and Engineering; Chemistry;

   Sammanfattning : III-V semiconductor material based nanowires have been extensively studied and shown to be a very exciting building block for future electronics. Material systems such as GaSb show a lot of promise in optoelectric and thermoelectric generation applications because of its high electron mobility and small bandgap. LÄS MER

3. 2. Effects of mixed surfactant system on chemical and physical stability of human growth hormone

   Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

   Författare :Karnsinee Viriyayudhakorn; [2023]
   Nyckelord :human growth hormone; surfactant; refolding; protein stability; physical degradation; chemical degradation; pharmaceutical technology; Technology and Engineering;

   Sammanfattning : In protein formulation, addition of surfactants is commonly executed to enhance product stability and shelf-life. The reason is that surfactants can protect proteins against surface-induced aggregation. However, the interaction between surfactant and protein depends on the type of surfactant used. LÄS MER

4. 3. Geobacillus 7349 – A new potential biosurfactant producing microorganism

   Master-uppsats, Lunds universitet/Bioteknik (master); Lunds universitet/Bioteknik (CI)

   Författare :Zhuoying Deng; [2023]
   Nyckelord :biosurfactant; rhamnolipids; HPLC; HPAEC-PAD; bacteria growth; downstream purification; liquid-liquid extraction; biotechnology; Chemistry;

   Sammanfattning : The main aim of this master project is to find out whether strain Geobacillus 7349 can produce biosurfactant during their growth by extraction and characterization of the product. The other goal is to optimize the cultivation condition of the strain. LÄS MER

5. 4. Study of surfactant-preservative and protein-preservative interactions in multi-dose injectable formulation

   Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

   Författare :Javier Lagares Martín; [2023]
   Nyckelord :Phenol; polysorbate 80; cloud point; somatropin; aggregation; titration; light scattering; salt; surfactant; preservative; protein; tonicity adjusting agents; multi-dose injectable formulation; pharmaceutical technology; Technology and Engineering;

   Sammanfattning : Multidose injectable formulations require a preservative such as phenol to ensure sterility and protection against microbial contamination during clinical use. However, it is known that the interaction between these components and non-ionic surfactants such as polysorbate 80, also found in this type of formulations, present incompatibilities, which can lead to decreases in the efficacy of the product. LÄS MER

7. 5. Influence of Peristaltic Pump Tubes on Protein Particles Formation for Lipase Enzyme Therapeutic Protein

   Master-uppsats, Lunds universitet/Livsmedelsteknik och nutrition (master)

   Författare :Salah Elden Omer; [2023]
   Nyckelord :Dynamic Image analysis; Protein aggregation; Peristaltic pump tubing; Particle characterization; PVC tubing; Silicone tubing; Surfactant; QICPIC; Pharmaceutical technology; Biology and Life Sciences;

   Sammanfattning : Introduction: In Bio-pharmaceutical production, peristaltic pump tubing is considered one of the factors that influence protein aggregation. Background: Protein particles present challenges for the control and analysis of various manufacturing processes in the biopharmaceutical industry for their significant effects on safety and quality. LÄS MER