Sökning: "Spruce Lignocellulose"

Visar resultat 1 - 5 av 8 uppsatser innehållade orden Spruce Lignocellulose.

  1. 1. Methods and Potentials of Kraft Lignin Esterification

    Master-uppsats, KTH/Fiber- och polymerteknologi

    Författare :Taoran Xu; [2023]
    Nyckelord :Kraft lignin; acetylation; fatty acid esterification; quantitative 31P NMR; lignin nanoparticles; Kraftlignin; acetylering; fettsyreesterifiering; kvantitativ 31P NMR; lignin nanopartiklar;

    Sammanfattning : Lignin, en av huvudkomponenterna i lignocellulosabiomassa, utgör en stor mängd av sidoströmen från massaindustrin. Lignin är aromatiska makromolekyler som förekommer i rikliga mängder i naturen och uppvisar unika antioxidant-, uv-skyddande, anti-ultravioletta, antikorrosiva och antimikrobiella egenskaper, etc. LÄS MER

  3. 2. Effect of experimental warming and assembly history on wood decomposition

    Master-uppsats, Mittuniversitetet/Institutionen för naturvetenskap

    Författare :Saba Hagos; [2020]
    Nyckelord :wood decay fungi; species composition; assembly history; warming; temperature; fungal growth; decomposition; carbon dioxide; climate feedbacks; species priority; polypore; microcosm; Norway spruce;

    Sammanfattning : Sammanfattning: Wood decay fungi are the main decomposer of lignocellulose material stored in wood. Thus, all factors that affect them could affect their ecological function. This in return, may affect ecosystem functioning in terms of altered carbon emissions from dead wood. LÄS MER

  4. 3. Co-pretreatment of spruce and poplar for ethanol production - Effects of mixed feedstocks on pretreatment and enzymatic hydrolysis efficiency

    Master-uppsats, Lunds universitet/Kemiteknik (CI)

    Författare :Hanna Jovanovic; [2017]
    Nyckelord :Biofuels; Bioethanol; Second generation bioethanol; Poplar; Spruce; Enzymatic hydrolysis; Pretreatment; Lignocellulose; Chemical Engineering; Kemiteknik; Technology and Engineering;

    Sammanfattning : Oil is very important for today’s society and the transportation sector is almost completely dependent on this material. Unfortunately, it affects the level of greenhouse gases negatively which in turn contribute to global warming. LÄS MER

  5. 4. Activity and synergistic action on cellulosic substrates of engineered product-site variants of Hypocrea jecorina Cel7A

    Master-uppsats, SLU/Dept. of Molecular Biology (until 131231)

    Författare :Umair Saleem; [2012]
    Nyckelord :cellulase; cellobiohydrolase; lignocellulose; biofuel; protein engineering; biotechnology; thermochemical pretreatment; spruce;

    Sammanfattning : Cellobiohydrolase Cel7A (Hje_Cel7A) from the ascomycete fungus Hypocrea jecorina is the major component of enzyme cocktails for degradation of plant biomass to soluble sugars for conversion to biofuels. It’s active site is enclosed in a cellulose-binding tunnel and it is able to processively cleave off several cellobiose units from the end of a cellulose chain before being released. LÄS MER

  7. 5. Factors influencing the fermentation of spruce hydrolysate by Dekkera bruxellensis and Saccharomyces cerevisiae

    Master-uppsats, SLU/Dept. of Microbiology

    Författare :David Sundell; [2011]
    Nyckelord :Dekkera Bruxellensis; ; Spruce Lignocellulose; Design of experiments; Saccharomyces Cerevisiae;

    Sammanfattning : Bioethanol and biogas are two possible alternatives to fossil fuel resources. The second generation fermentations involving lignocellulosic material is one of the latest fields for bioethanol science. LÄS MER