Sökning: "Freeze drying"

Visar resultat 1 - 5 av 69 avhandlingar innehållade orden Freeze drying.

  1. 1. Enhancing the stability of probiotics: Freeze-drying and encapsulation

    Författare :Shuai Bai; Avdelningen för livsmedel och läkemedel; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; freeze-drying; lyophilization; L.ruteri; Probiotics; Lyoprotectant; Structure; Encapsulating material; Pore size; Material thickness; SEM; Tomography; Storage stability; Amorphous sugars; Glass transition temperature; DSC;

    Sammanfattning : This research dives into the intricate world of freeze-drying, an essential process in pharmaceutical and probiotic industries, to better understand the factors affecting probiotic stability during storage. The process of freeze-drying and the composition of freeze-dried products significantly affect the stability of probiotics, yet factors such as the material’s encapsulation properties remain relatively unexplored, demanding further research. LÄS MER

  3. 2. Freeze-Dried Wheat Gluten-Based Foams

    Författare :Thomas Blomfeldt; Mikael Hedenqvist; Delcour Jan; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Foams; Wheat gluten; Glutenin; Gliadin; Renewable; Freeze-drying; Pore structure; Baceterial cellulose; Glycerol; Mechanical properties; Thermal conductivity; Combustion properties;

    Sammanfattning : This thesis presents wheat gluten foams as an alternative to the available commercialfoams. Polymeric foams, like all plastics, are mostly made from petroleum, and this isaffecting the environment negatively with the emission of greenhouse gases and generation oflandfills. LÄS MER

  4. 3. Multifunctional Foams Based on Nanomaterials from Plants and Textile Waste

    Författare :Carina Schiele; Lennart Bergström; Emily Cranston; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; multifunctional foams; nanofibers; aramid; cotton; nanocellulose; heat transport; thermal conductivity; electromagnetic shielding; supercritical drying; freeze drying; materialkemi; Materials Chemistry;

    Sammanfattning : Nanoparticles extracted from plants or textile waste are promising candidates for the design of sustainable materials. In this thesis, I explored how nanoparticles extracted from trees and from Kevlar and cotton textile wastes can be processed to form lightweight composite foams. LÄS MER

  5. 4. Pharmaceutical Nanocomposites : Structure–Mobility–Functionality Relationships in the Amorphous State

    Författare :Joel Hellrup; Denny Mahlin; Göran Alderborn; László Fábián; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; amorphous; pharmaceutical composites; solid state; structure; molecular mobility; spray-drying; freeze-drying; moisture sorption; physical stability; compression; Farmaceutisk vetenskap; Pharmaceutical Science;

    Sammanfattning : Amorphous materials are found in pharmaceutical formulations both as excipients and active ingredients. Indeed, these formulations are becoming an essential strategy for incorporating drugs into well-performing solid dosage forms. LÄS MER

  7. 5. The influence of ageing on the salt-frost resistance of concrete

    Författare :Peter Utgenannt; Avdelningen för Byggnadsmaterial; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Materiallära; materialteknik; Building construction; Material technology; freeze thaw testing; hydration; field exposure; carbonation; drying; Byggnadsteknik; ageing; salt-frost resistance; Concrete;

    Sammanfattning : Abstract This thesis presents the results of an investigation of the influence of ageing on the salt-frost resistance of concrete. The ageing mechanisms investigated were hydration, drying and carbonation. LÄS MER