Index Catalog // ScholarsArchive@OSU

In Vitro fermentation of dietary cellulose by human fecal microorganisms

Creator:: Chang, Hung-pi
Abstract:: The purpose of the study was to set up an in vitro model of the colon which would permit the analysis of cellulose fermentation by human colonic microflora. Studies of the degradation of polysaccharides by colonic bacteria may help to explain the observed physiological consequences of consuming dietary fiber common...
Resource Type:: Masters Thesis
Full Text:: Miller and Dr. Ronald Wrolstad. Special thanks also go to Dr. Juinn-Chin Hsu and Xiaolin Huang for

Purification of strawberry polyphenol oxidase and its role in anthocyanin degradation

Creator:: Wesche-Ebeling, Pedro Alfredo E.
Abstract:: Polyphenol oxidase (PPO) from strawberries was purified, partially characterized, and used to study its role in the degradation of anthocyanin pigments. The extraction method included the use of a buffered solution containing the phenolic binders Polyclar AT and Amberlite XAD-4. Addition of Triton X-100 resulted in an increase of the...
Resource Type:: Dissertation
Full Text:: : .,.,_... Dr. Morris W. fmptgomery| Polyphenol oxidase (PPO) from strawberries was purified, partially

Effect of molecular conformation on the surface properties of polyelectrolyte solutions : xanthan gum model studies

Creator:: Young, San Land
Abstract:: A commercially important polyelectrolyte, xanthan, was chosen for a systematic analysis of the relationship between molecular conformation and surface properties. In the first study the effects of ionic strength, xanthan concentration and temperature on the xanthan molecular conformation were investigated by potentiometric titration. The effects of the same factors and...
Resource Type:: Masters Thesis
Full Text:: . Wrolstad, Dr. Donald L. MacDonald and Dr. Harry W. Schultz for their invaluable suggestions. My special

Impact of malolactic fermentation on red wine color and color stability

Creator:: Burns, Tresider R.
Abstract:: Malolactic fermentation (MLF) is an important step in the production of wines and is commonly performed in red or cool climate wines to reduce acidity. In this study the impact of MLF on red wine color and the ability of Oenococcus oeni to degrade compounds important to the development of...
Resource Type:: Masters Thesis
Full Text:: big part of my wine education came from weekends with Brian Yorgey, Scott Robbins, Alex Moeller, and

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:: , 1992; Divne et al., 12 (a) w (b) (c) Figure 2.5 Three different active sites topologies of

Antioxidant potential of yeast containing beer

Creator:: Morris, Edward E.
Abstract:: It has been suggested that cellular damage from oxygen radicals is one of the processes leading to cardio-vascular disease and cancer. Natural antioxidants prevent uncontrolled oxidative reactions by decreasing molecular oxygen levels, scavenging chain-initiating and chain-propagating free radicals, chelating metals, or decomposing peroxides. Beer is rich in antioxidants, derived both...
Resource Type:: Masters Thesis

Influence of vine vigor and shading in Pinot noir (Vitis vinifera L.) on the concentration and composition of phenolic compounds in grapes and wine

Creator:: Cortell, Jessica M.
Abstract:: In 2003 and 2004 vigor zones were delineated in two commercial vineyard sites based on vine growth variation to assess fruit and wine phenolic chemistry. In 2004, the effects of shading on the accumulation of phenolic compounds were also investigated. Model extractions were done from the shading experiment and the...
Resource Type:: Dissertation

The stability of ascorbic acid in bottled cranberry-based beverages under home-use conditions

Creator:: Wong, Geoffrey K.
Abstract:: Commercially bottled, vitamin C-fortified, cranberry juice cocktail and cranberry-apple (cranapple) juice drinks were stored at 5°C under simulated home-use conditions. Ascorbic acid (AA) and dehydroascorbic acid (DHA) levels were evaluated over a period of seven days by high performance liquid chromatography (HPLC). Total vitamin C content was also determined by...
Resource Type:: Masters Thesis
Full Text:: - - *- . - w • my ■+*,*_WMI _„ I. Dean of Graduate Schoo Date thesis is presented: November 9. 1987

Cross-cultural sweetness preferences for a sports drink

Creator:: Chung, Seo-Jin
Abstract:: Asian countries have become one of the largest export markets for US food developers during the past decade. Understanding consumer expectations and needs in a cross-cultural framework has gained importance for new products to succeed in the international markets. A sports-drink, which is a functional drink for athletes, has been...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

In Vitro fermentation of dietary cellulose by human fecal microorganisms

Purification of strawberry polyphenol oxidase and its role in anthocyanin degradation

Effect of molecular conformation on the surface properties of polyelectrolyte solutions : xanthan gum model studies

Impact of malolactic fermentation on red wine color and color stability

Immobilized cellooligosaccharides in the study of trichoderma reesei cellobiohydrolases

Antioxidant potential of yeast containing beer

Influence of vine vigor and shading in Pinot noir (Vitis vinifera L.) on the concentration and composition of phenolic compounds in grapes and wine

The stability of ascorbic acid in bottled cranberry-based beverages under home-use conditions

Cross-cultural sweetness preferences for a sports drink

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