Sökning: "deacetylation degree"

Hittade 3 uppsatser innehållade orden deacetylation degree.

  1. 1. Deacetylated Hyaluronan : Exploration of deacetylation techniques for hyaluronan (oligo and polysaccharides)

    Kandidat-uppsats, Uppsala universitet/Institutionen för materialvetenskap

    Författare :Sima Mardini; Hanna Björk; Marcus Möller; Carl Lagergren; Oscar Samuelsson; [2023]
    Nyckelord :hyaluronic acid; deacetylated hyaluronan; N-deacetylation; re-acetylation; hydrogels;

    Sammanfattning : Hyaluronic acid is an organic polysaccharide with a wide range of uses in medical and cosmetic industries due to its physiological properties. Crosslinked hyaluronic acid is a commonly used filler agent because of its water retention capabilities. N-deacetylation can be performed to enable new derivatives of hyaluronic acid. LÄS MER

  3. 2. Studies of the Impregnation Stagein Kraft Pulping of Hardwood

    Master-uppsats, KTH/Skolan för kemi, bioteknologi och hälsa (CBH)

    Författare :Jonas Garemark; [2018]
    Nyckelord :;

    Sammanfattning : In kraft pulping, one of the main issues is the extensive wood losses. With increasing prices ofwoody biomass an incentive towards minimizing the wood losses exists. Amongst the variousprocess steps, the impregnation of wood chips has shown to enhance the cooking by providinga homogeneous distribution of chemicals inside the chips. LÄS MER

  4. 3. Extraction of chitosan from Fungal cell wall by Sulfuric acid Studying the effect of Deacetylation degree and temperature on recovery chitosan

    Magister-uppsats, Högskolan i Borås/Institutionen Ingenjörshögskolan

    Författare :Mehdi Gholizadeh Aghdam; [2010]
    Nyckelord :r.pulusilus; m.indicus; extraction; recovery; chitosan; fungal cell wall; sulfuric acid; deacetylation degree; temperature;

    Sammanfattning : The goal of this project is extraction of chitosan optimally by surveys of temperature changesalong with 1% Sulfuric acid utilization. Microbial chitosan is isolated as a bio-componentfrom cell wall of two kinds of Zygomycetes by some extraction methods. This projectcompares ability of two type Fungi (R. pulusilus and M. LÄS MER