Sökning: "antioxidants"

Visar resultat 6 - 10 av 68 uppsatser innehållade ordet antioxidants.

  1. 6. Analysis of Process Technologies to Preserve Berries

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

    Författare :Jose Abraham Zamudio Pedraza; [2022]
    Nyckelord :berry processing; freezing; drying; lyophilization; microwave vacuum drying; osmotic dehydration; environmental impact; food engineering; Agriculture and Food Sciences;

    Sammanfattning : From all the wild berries that grow in Sweden only 2-5% is utilized (RISE, 2022). The United Nation has 17 goals for sustainable development, and many of those goals are related to sustainable food production (United Nations, 2022). LÄS MER

  3. 7. Organic waste streams in the wine industry

    Kandidat-uppsats, SLU/Department of Molecular Sciences

    Författare :Hanna Eriksson; [2022]
    Nyckelord :wine; waste; utilization; grapes; residue; pomace;

    Sammanfattning : Today, the annual global production of grapes surpasses seventy million tonnes. Of the grapes used toward winemaking, one fourth end up as pomace. In addition to pomace, vine pruning residues, stems and wastewater sludge contribute to the immense volumes of waste that for a long time has been considered as without value. LÄS MER

  4. 8. Method Development for Analysis of Antioxidants for Use in Areas Sensitive to Discoloration and of High Molecular Weight UV-Stabilizers

    Master-uppsats, KTH/Kemi

    Författare :David Camaj; [2022]
    Nyckelord :Phenolic Antioxidants; UV-Stabilizers; Analysis Method development; Capillary Electrophoresis; MALDI-TOF; Fenoliska Antioxidanter; UV-stabilisatorer; Analysmetodutveckling; Kapillärelektrofores; MALDI-TOF;

    Sammanfattning : Vanliga fenoliska antioxidanter som används i polymerer orsakar färgändringar i polymeren. Detta arbete berör antioxidanter med jämförelsevis begränsad färgändring, med fokus på att utveckla metoder för analys av dessa. UV-stabilisatorerna UV2, UV5, UV1, UV4, UV3 och UV6 är också inkluderade i detta arbete. LÄS MER

  5. 9. Evaluation of the stability of immobilized lipases from Rhizomucor miehei and Rhizopus oryzae in high oleic sunflower oil

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

    Författare :Jinxu Xu; [2021]
    Nyckelord :lipase; immobilization; oxidation; biotechnology; Technology and Engineering;

    Sammanfattning : Lipase is one of the most useful enzymes in food industry, which can catalyze the hydrolysis and the synthesis of esters. However, the high cost due to the poor operation stability of lipase hinders the wide use of it. LÄS MER

  7. 10. Lifetime prediction of a polymeric propellant binder using the Arrhenius approach

    Uppsats för yrkesexamina på avancerad nivå, Uppsala universitet/Tillämpad materialvetenskap

    Författare :Johannes Bohlin; [2021]
    Nyckelord :Polymer; Thermal-oxidative degradation; Lifetime prediction; Propellant; Arrhenius; Aging experiments; Diffusion-limited oxidation;

    Sammanfattning : The thermal-oxidative degradation of a crosslinked hydroxy-terminated polybutadiene (HTPB)/cycloaliphatic diisocyanate (H12MDI) based polymer, which is commonly used as a polymeric binder in propellants, is investigated at temperatures from 95°C to 125°C with the aim of estimating the lifetime of the material in storage conditions (20°C) using the Arrhenius approach. Furthermore, the effect of antioxidants and to a lesser extent plasticizer on the degradation process was also studied. LÄS MER