Sökning: "Björn Alriksson"

Hittade 5 avhandlingar innehållade orden Björn Alriksson.

  1. 1. Ethanol from lignocellulose : Alkali detoxification of dilute-acid spruce hydrolysates

    Författare :Björn Alriksson; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  3. 2. Ethanol from lignocellulose : Management of by-products of hydrolysis

    Författare :Björn Alriksson; J Leif Jönsson; Vincent Eijsink; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Ethanol; Lignocellulose; Detoxification; Genetic engineering; Enzyme production; Biochemistry; Biokemi; Kemi; Chemistry;

    Sammanfattning : Fuel ethanol can be produced from lignocellulosic materials, such as residues from agriculture and forestry. The polysaccharides of lignocellulose are converted to sugars by hydrolysis and the sugars can then be fermented to ethanol using microorganisms. However, during hydrolysis a wide range of by-products are also generated. LÄS MER

  4. 3. Ethanol from lignocellulose : Alkali detoxification of dilute-acid spruce hydrolysates

    Författare :Björn Alriksson; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Biochemistry; Biokemi; Kemi; Chemistry;

    Sammanfattning : Detoxification of dilute-acid lignocellulose hydrolysates by treatment with Ca(OH)2 (overliming) efficiently improves the production of fuel ethanol, but is associated with drawbacks like sugar degradation and CaSO4 precipitation. In factorial designed experiments, in which pH and temperature were varied, dilute-acid spruce hydrolysates were treated with Ca(OH)2, NH4OH or NaOH. LÄS MER

  5. 4. Production of L-arginine by genetically modified Escherichia coli

    Författare :Mireille Ginesy; Björn Alriksson; Luleå tekniska universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Biokemisk processteknik; Biochemical Process Engineering;

    Sammanfattning : In the recent years, the demand for environmental friendly produced L-arginine has risen with the increasing number of applications for this amino acid in pharmaceuticals, nutraceuticals, cosmetics, animal feed and fertilizers. Members of the Corynebacteriaceae family are usually used for microbial L-arginine production. LÄS MER

  7. 5. Biochemical conversion of biomass : hydrothermal pretreatment, by-product formation, conditioning, enzymatic saccharification, and fermentability

    Författare :Dimitrios Ilanidis; Leif J. Jönsson; Carlos Martin; Björn Alriksson; Eulogio Castro; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lignocellulosic biomass; hydrothermal pretreatment; enzymatic digestibility; ethanolic fermentation; microbial inhibitors; conditioning;

    Sammanfattning : Lignocellulosic residues have great potential as feedstocks for production of bio-based chemicals and fuels. One of the main routes is biochemical conversion, which typically includes pretreatment, enzymatic saccharification, microbial fermentation of sugars, and valorization of hydrolysis lignin. LÄS MER