Sökning: "Gellan gum gel"

Hittade 4 uppsatser innehållade orden Gellan gum gel.

  1. 1. Cleaning methods for removal of bound soiling on leather

    Kandidat-uppsats, Göteborgs universitet/Institutionen för kulturvård

    Författare :Olivia Cati Starck; [2023-11-14]
    Nyckelord :Conservation; Leather; Cleaning; Vulpex; White spirit; Isopropanol; Gellan gum gel;

    Sammanfattning : This thesis investigates the removal of bound soiling on leather using three cleaning methods: Vulpex (10%) in white spirit, gellan gum gel loaded in isopropanol and white spirit by itself. More detailed studies of cleaning methods for bound soiling in leather conservation are sparse. LÄS MER

  3. 2. Bläckborttagning från ben med hjälp av geler En kvantitativ studie för bläckborttagning på björnbäcken och björnkranium från Naturhistoriska riksmuseet

    Kandidat-uppsats, Göteborgs universitet/Institutionen för kulturvård

    Författare :Engla Nordin; [2023-11-07]
    Nyckelord :Conservation; reversibility; bones; FTIR; nanogels; hydrogels; ink.;

    Sammanfattning : This bachelor's thesis has investigated four different hydrogels loaded in different solvents efficiency to remove unknown ink from four pelvic bones and one skull from five bear individuals that belongs to The Swedish Museum of Natural History. The experimental part of the thesis consists of an FTIR analysis together with microscopy and macroscopy analysis of the ink on the bear skeletons, as well as some tests of different gel-solvent combinations on a moose skull. LÄS MER

  4. 3. The effect of mechanical shear in ambient yoghurt

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

    Författare :Emilia Magdaleno Morales Henrysson; [2016]
    Nyckelord :long life yoghurt; stabilizers; viscosity; Yogurt; shear rate; food technology; livsmedelsteknologi; Technology and Engineering; Agriculture and Food Sciences;

    Sammanfattning : Yoghurt is a fermented product form the milk, well known in the world. The fermentation is carried out by Lactic acid bacteria (LAB). The most common are Streptococcus thermophilus and lactobacillus bulgaricus, these bacteria make the milk acid, generating a disturbance in the casein micelles making a solid mass called coagulum. LÄS MER

  5. 4. Cleaning of Watercolour Drawings A study of the use of Gellan gum gel on water sensitive media

    Kandidat-uppsats, Göteborgs universitet/Institutionen för kulturvård

    Författare :Lotta Möller; [2014-07-08]
    Nyckelord :Paper conservation; watercolour drawings; Gellan gum gel; immersion wash; cleaning; colorimetry; UV-vis spectroscopy;

    Sammanfattning : Gellan gum is a non-toxic and biodegradable polysaccharide widely used in pharmaceutical and food industries. 2003 the use of a rigid gel of Gellan gum was introduced in paper conservation for cleaning of works of art on paper. The method has been thoroughly evaluated and highlighted as an ideal method for treating sensitive and degraded papers. LÄS MER