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Filtering by: Creator Holroyd, Michael H. Remove constraint Creator: Holroyd, Michael H. Advisor Penner, Michael H. Remove constraint Advisor: Penner, Michael H.

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  • Initial velocity analyses of milling effects on rates of enzyme-catalyzed saccharification of native wheat straw

    Creator:
    Nguyen, Quynh M.
    Abstract:
    There is considerable interest in developing environmentally friendly processes for the economical conversion of biomass plant material to biofuels, bioproducts and biomaterials. One approach to such a conversion process is to make use of enzymes for the conversion of plant polysaccharides to simple sugars; the simple sugars could then be...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________ Michael H. Penner There is considerable interest in developing environmentally

  • Interactions of Trichoderma reesei exo-acting cellulases with p-aminophenyl 1-thio-β-D-cellobioside

    Creator:
    Piyachomkwan, Kuakoon
    Abstract:
    Cellulolytic enzymes capable of efficiently degrading crystalline cellulose are a complex mixture of endo- (endoglucanases) and exo-acting (cellobiohydrolases) enzymes. One approach to separating these enzymes is affinity chromatography. A new ligand, p-aminophenyl l-thio-β-D-cellobioside (APTC), is introduced for this purpose. The property of APTC in affinity chromatography is demonstrated using Trichoderma...
    Resource Type:
    Dissertation
    Full Text:
    -Cellobioside. Abstract approved: ,__ Michael H. Penner Cellulolytic enzymes capable of efficiently

  • Salt and polyelectrolyte affect on food colloid function : polygalacturonic acid and egg albumen case studies

    Creator:
    Chen, Chi-Shen
    Abstract:
    The primary purpose of this study was to try to (1) provide information on the chemical nature, including turbidity formation, of polygalacturonic acid in different concentrations of NaCl solution. (2) use turbidity formation characteristics to develop an assay for determining the activities polygalacturonic acid depolymerases by using a polyelectrolyte. (3)...
    Resource Type:
    Dissertation
    Full Text:
    : ______________________________________________________ Michael. H. Penner The primary purpose of this study was to try to (1) provide

  • Science and efficacy of mild sodium hydroxide treatments in enzyme-based wheat straw-to-glucose processing

    Creator:
    Sophonputtanaphoca, Supaporn
    Abstract:
    The work described in this dissertation focused on chemistry related to the use of aqueous sodium hydroxide as a treatment in the processing of wheat straw. A major emphasis was the comprehensive evaluation of straw component partitioning due to sodium hydroxide (NaOH) processing. This was evaluated over a range of...
    Resource Type:
    Dissertation
    Full Text:
    -­‐ Based  Wheat  Straw-­‐to-­‐Glucose  Processing     Abstract  approved:   Michael  H

  • Digesta passage rates in the rat

    Creator:
    Luick, Bret R.
    Abstract:
    The movements of digestion markers in the gut of the rat were investigated and the results of the investigation are reported in two manuscripts. The objective of the first study was to determine the influence of particle size of dietary wheat bran, chosen as a representative insoluble fiber, on the...
    Resource Type:
    Dissertation
    Full Text:
    Passage Rates in the Rat Abstract approved: , | . Michael H. Penner The movements of digestion

  • Conversion of lignocellulosic biomass : analysis of substrate characteristics

    Creator:
    Meunier-Goddik, Lisbeth
    Abstract:
    The objective of this research was to investigate the influence of physicochemical properties of lignocellulosic biomass on the rate and extent of cellulose conversion, i.e. the "hydrolyzability" of the substrate. The initial two parts of this thesis investigated the interactions between various components of pretreated biomass. The relevance of cellulase...
    Resource Type:
    Dissertation
    Full Text:
    : - L-- - , Michael H. Penner The objective of this research was to investigate the

  • Utilization of lignocellulosic polysaccharides

    Creator:
    Fenske, John J.
    Abstract:
    Lignocellulosic biomass represents a vast supply of fermentable carbohydrates and functional aromatic compounds. Conversion of lignocellulosics to ethanol and other useful products would be of widespread economical and environmental benefit. Better understanding of the behavior of different lignicellulosic feedstocks in fermentation protocols as well as catalytic activities involved in lignocellulosic...
    Resource Type:
    Dissertation
    Full Text:
    Lignocellulosic Polysaccharides. Abstract approved: ^ _ r . _ . . . . Michael H. Penner

  • Wheat lignin as a functional dietary fiber component

    Creator:
    Junyusen, Tiraporn
    Abstract:
    This dissertation has focused on lignin byproducts that result from the alkali processing of wheat straw. The first study evaluated the application of “standard” lignin quantification methods for summative analyses of alkali-based processes. Mass closure during NaOH processing at 25, 50, and 75°C of wheat straw was evaluated using the...
    Resource Type:
    Dissertation
    Full Text:
    : __________________________________________________________________ Michael H. Penner This dissertation has focused on lignin byproducts that result from the

  • Immobilized cellooligosaccharides in the study of trichoderma reesei cellobiohydrolases

    Creator:
    Sangseethong, Kunruedee
    Abstract:
    A novel type of model substrates, i.e. immobilized p-aminophenyl-β-D-cellooligosaccharides, was developed and used in the study of exocellulases. The two major cellobiohydrolases from Trichoderma reesei, CBH I and CBH II were used as representative enzymes. p-Aminophenyl derivatives of cellobiose (PAPG₂), cellotriose (PAPG₃), and cellotetraose (PAPG₄) were synthesized from the reaction...
    Resource Type:
    Dissertation
    Full Text:
    : •- -1 - ■ /- \y - Michael H. Penner A novel type of model substrates, i.e. immobilized p

  • Separation and detection of cellooligosaccharides on cellulose thin-layer chromatography

    Creator:
    Sookavatana, Narumon
    Abstract:
    Linear oligosacchardies of 1,4 linked β-D-glucopyranose are commonly referred to as cellodextrins (CD) or cellooligosaccharides (CO). They are of interest to those working in disciplines involving cellulose chemistry because they are often used as model substrates for cellulose itself. They are of interest to food scientists and nutritionists because they...
    Resource Type:
    Masters Thesis
    Full Text:
    approved: Michael H. Penner Linear oligosacchardies of 1,4 linked P-D-glucopyranose are commonly