Index Catalog // ScholarsArchive@OSU

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

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

The relative activity of the cellulase enzyme system of Trichoderma reesei with native and modified cellulosic substrates

Creator:: Liaw, Ean-Tun
Resource Type:: Dissertation
Full Text:: Substrates Abstract approved by : Michael H. Penner The relative merit of assays commonly applied to

Cellulase system of Trichoderma reesei QM9414 : a study of its apparent sustrate inhibition

Creator:: Huang, Xiaolin
Resource Type:: Dissertation
Full Text:: Abstract approved by : . Michael H. Penner The apparent substrate inhibition properties of

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

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

Preparation and modification of cellooligosaccharides

Creator:: Akpinar, Ozlem
Abstract:: Cellooligosaccharides are the reaction intermediates produced during the hydrolysis of cellulose to glucose. Hence, they have the same chemical structure as cellulose, just shorter chain lengths. Cellooligosaccharides up to DP eight are soluble in water. The soluble cellooligosaccharides can be used "as is" in the food industry as non-digestible oligosaccharides...
Resource Type:: Dissertation
Full Text:: and Modification of Cellooligosaccharides Abstract approved: Michael H. Penner

Saccharification and fermentation of lignocellulosic biomass using Trichoderma reesei cellulases and Saccharomyces cerevisiae

Creator:: Chung, Yun-Chin
Abstract:: The efficiency of cellulose hydrolysis under straight saccharification and simultaneous saccharification and fermentation (SSF) conditions was evaluated using three lignocellulosic materials (switchgrass, cornstover, and poplar), which had been pretreated with dilute sulfuric acid under conditions which optimized xylose concentrations in the prehydrolysate liquid. Yields of glucose, cellobiose and ethanol obtained...
Resource Type:: Dissertation
Full Text:: cerevisiae Abstract approved by: Michael H. Penner The efficiency of cellulose hydrolysis under

The Role of Ascorbic Acid, β-Cyclodextrins, and Alternative Substrates in Dictating Rates of Polyphenol Oxidase-Catalyzed Browning in Potato-Based Reaction Mixtures

Creator:: Jiang, Shu
Abstract:: Enzymatic browning is a consequence of a series of reactions initiated by polyphenol oxidase (PPO)-catalyzed quinone formation. Unwanted browning negatively affects food quality and lowers consumer acceptability. Thus, there is general interest in strategies to control enzymatic browning. Cyclodextrins are cyclic glucan oligosaccharides that form inclusion complexes with a number...
Resource Type:: Dissertation
Full Text:: : ________________________________________________ Michael H. Penner Enzymatic browning is a consequence of a series of reactions

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

ScholarsArchive@OSU

Immobilized cellooligosaccharides in the study of trichoderma reesei cellobiohydrolases

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

The relative activity of the cellulase enzyme system of Trichoderma reesei with native and modified cellulosic substrates

Cellulase system of Trichoderma reesei QM9414 : a study of its apparent sustrate inhibition

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

Digesta passage rates in the rat

Preparation and modification of cellooligosaccharides

Saccharification and fermentation of lignocellulosic biomass using Trichoderma reesei cellulases and Saccharomyces cerevisiae

The Role of Ascorbic Acid, β-Cyclodextrins, and Alternative Substrates in Dictating Rates of Polyphenol Oxidase-Catalyzed Browning in Potato-Based Reaction Mixtures

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

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