Sökning: "oxalate degradation"

Hittade 5 avhandlingar innehållade orden oxalate degradation.

  1. 1. Industrial applications and properties of oxalate-degrading enzymes

    Författare :Sandra Winestrand; Leif J. Jönsson; Thomas Nilsson; Nils-Olof Nilvebrant; Gudmundur O. Hreggvidsson; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Oxalic acid; oxalate oxidase; oxalate decarboxylase; calcium oxalate; scaling; active packaging; Kemi; Chemistry;

    Sammanfattning : Oxalate-degrading enzymes were investigated with focus on potential applications in the pulp and paper industry and in active packaging. Changes introduced to make the pulp and paper industry more environmentally friendly, such as recirculation of process-water streams and elementary chlorine free bleaching of pulp, have led to increasing problems with precipitation of calcium oxalate. LÄS MER

  3. 2. Structural enzymology of oxalate degradation in Oxalobacter formigenes

    Författare :Catrine L Berthold; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Oxalic acid, as one of nature's most highly oxidised compounds, is toxic to most organisms. It is introduced in the human body in the diet but also as a waste product of cellular metabolism. Mammals do not posses the ability to degrade oxalate and must excrete it in the urine or through the intestine. LÄS MER

  4. 3. Laccases and Oxalate-Degrading Enzymes Heterologous Expression and Novel Applications in Lignocellulose Processing

    Författare :Pierre Cassland; Teknisk mikrobiologi; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; virology; mycology; Mikrobiologi; virologi; mykologi; bacteriology; Microbiology; Lignocellulose Processing; Heterologous expression; Laccases; Oxalate-Degrading Enzymes; bakteriologi;

    Sammanfattning : Lignocellulose constitutes a vast renewable resource for the production of, for example, paper and bioethanol. The potential of using laccase and oxalate-degrading enzymes in novel applications for the processing of lignocellulose was investigated in this work. LÄS MER

  5. 4. Formyl-coenzyme : a transferase, structure and enzymatic mechanism

    Författare :Stefano Ricagno; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :X-ray crystallography; oxalate degradation; Oxalobacter; CoA transferase; interlocked dimer; anhydride.;

    Sammanfattning : Background: Formyl-CoA transferase (Frc) is the first enzyme in a two enzyme pathway responsible for oxalate degradation in Oxalobacter formigenes. This bacterium is a constitutive part of human intestinal flora. Its role as an oxalate scavenger is very important, reports have shown a strong connection between the disappearance of 0. LÄS MER

  7. 5. Chemical characterization in the biorefinery of lignocellulose : Formation and management of oxalic acid and analysis of feedstocks for bioethanol production

    Författare :Anders Sjöde; Nils-Olof Nilvebrant; Leif J. Jönsson; Arthur J. Ragauskas; Karlstads universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; biorefinery; enzymes; ethanol; lignocellulosic feedstocks; oxalic acid; scaling; Biochemistry; Biokemi; Kemi; Chemistry;

    Sammanfattning : The pulp and paper industry is entering a new era. Pulp mills will be transformed to biorefineries that produce not only pulp, but also biofuels and novel products from lignocellulose. This thesis addresses problems connected with the industrial transition to environmental-friendly technologies and the implementation of the biorefinery concept. LÄS MER