Index Catalog // ScholarsArchive@OSU

Rhynchosporium orthosporum in orchardgrass, isolation frequency, colonization, variability, and an evaluation of cultivar resistance

Creator:: Fernandez, Jesus Perez
Resource Type:: Dissertation
Full Text:: Ronald E. Welty Studies were undertaken in orchardgrass (Dactylis glomerata) and the plant pathogen

Boundaries of research : civilian leadership, military funding, and the international network surrounding the development of numerical weather prediction in the United States

Creator:: Harper, Kristine C.
Abstract:: American meteorology was synonymous with subjective weather forecasting in the early twentieth century. Controlled by the Weather Bureau and with no academic programs of its own, the few hundred extant meteorologists had no standing in the scientific community. Until the American Meteorological Society was founded in 1919, meteorologists had no...
Resource Type:: Dissertation
Full Text:: helped me put the archival information into perspective. Many thanks to my committee members: Ronald E

Development of analytical methodology for verification of authenticity of apple juice

Creator:: Lee, Hyoung S.
Abstract:: Apples growing in New Zealand, Argentina, Mexico, Michigan and Washington were used to provide the compositional data and to develop the analytical procedures for the use in verification of authenticity of apple juices. High Performance Liquid Chromatography (HPLC) techniques were applied for glucose, fructose, sucrose, sorbitol, malic, citric, quinic, shikimic,...
Resource Type:: Dissertation
Full Text:: : Dr. Ronald E. Wrolsdld Apples growing in New Zealand, Argentina, Mexico, Michigan and Washington

Variation of sugars and acids during ripening of pears and in the production and storage of pear concentrate

Creator:: Akhavan, Iradj
Abstract:: Two methods of separating sugars and acids of Bartlett pears were compared to decide upon a working method for later studies involving identification and quantitation of sugars and acids during ripening of pears and in the production and storage of pear concentrate. The first method involved precipitation of acids with...
Resource Type:: Dissertation
Full Text:: CONCENTRATE Abstract approved: Dr. R, E, Wrolstad Two methods of separating sugars and acids

The stability of pelargonidin-based anthocyanins in natural and model systems

Creator:: Garzon, G. Astrid
Abstract:: Pelargonidin 3-glucoside (pgd 3-glu), pelargonidin 3-sophoroside (pgd 3-soph), and pelargonidin 3-sophoroside 5-glucoside acylated with cinnamic and malonic acids (acyl-pgd 3-soph 5-glu) were extracted from strawberries (Fragaria anannassa cv, Totem), nasturtium flowers (Tropaeolum majus), and radish peel (Raphanus sativus L. cv, fuego), respectively. Their stability was studied in natural and model...
Resource Type:: Dissertation
Full Text:: : = ^ Ronald E. Wrolstad Pelargonidin 3-glucoside (pgd 3-glu), pelargonidin 3-sophoroside (pgd 3-soph), and

Structure and conformation of red radish (Raphanus sativus L.) anthocyanins and their effect on color and pigment stability

Creator:: Giusti Hundskopf, Maria Monica
Abstract:: Red radish (Raphanus sativus L.) anthocyanins were extracted from liquid nitrogen powdered epidermal tissue using acetone and chloroform and isolated using C-18 resin. Chemical structure and conformation of major pigments were elucidated by 1-D and 2-D NMR, Mass Spectroscopy, HPLC, and spectral analyses. Two novel di-acylated anthocyanins, pelargonidin 3-0-[2-0-(β-D-glucopyranosyl)-(6-0- trans-p-coumaroyl-...
Resource Type:: Dissertation
Full Text:: Their Effect on Color and Pigment Stability. Abstract approved : Ronald E. Wrolstad Red radish

Characterization and detection of potential adulterants in apple juice by pattern recognition methods

Creator:: Pilando, Leticia S.
Abstract:: Fruit juice concentrates- hard pear, soft pear, fig, prune, raisin, white grape, and pineapple, and sweeteners-invert beet, invert cane, and high fructose corn syrup (HFCS) were characterized by sugar profiles, nonvolatile acid profiles, UV spectral profiles, and mineral content. These fruit juices and sweeteners were also used to adulterate commercial...
Resource Type:: Dissertation
Full Text:: Abstract approved: .. ._ _ _ Dr. Ronald E. Wrolstad Fruit juice concentrates- hard pear, soft pear

The potato : composition, non-enzymatic browning and anthocyanins

Creator:: Rodriguez-Saona, Luis Enrique
Abstract:: Chipping varieties and model systems were used to determine the role of potato constituents on chip color. Composition was evaluated by HPLC and chip color measured using a ColorQuest colorimeter. Reducing sugar (RS) content did not completely explain color quality when present in low concentrations (<60 mg/lOOg). Levels of ascorbic...
Resource Type:: Dissertation
Full Text:: Potato: Composition. Non- Enzvmatic Browning and Anthocyanins Abstract approved by: Ronald E

Cherry phytochemicals

Creator:: Chaovanalikit, Arusa, 1974-
Abstract:: The distribution of anthocyanin pigments and polyphenolics of sweet (Prunus avium) and sour cherries (Prunus cerasus) were determined by Ultraviolet- Visible (UV-Visible) spectrophotometry and High Performance Liquid Chromatography with photodiode array detector (HPLC-DAD). Their antioxidant properties were determined by Oxygen Radical Absorbance Capacity (ORAC) and Ferric Reducing Antioxidant Power (FRAP)....
Resource Type:: Dissertation
Full Text:: Phytochemicals Abstract approved: Ronald E. Wrolstad The distribution of anthocyanin pigments and

Characterization of anthocyanins in fruit juices and natural colorants

Creator:: Hong, Victor
Abstract:: A method for separation and characterization of individual anthocyanins was developed. High Performance Liquid Chromatography (HPLC) with a polymer based reversed-phase column was used to separate the pigments while on-line Photodiode Array Detection (PDA) was employed to record the UV and Visible spectrum of the individual peaks. Spectral information obtained...
Resource Type:: Dissertation
Full Text:: ' \ Dr. Ronald E. Wrolstad A method for separation and characterization of individual anthocyanins was

ScholarsArchive@OSU

Rhynchosporium orthosporum in orchardgrass, isolation frequency, colonization, variability, and an evaluation of cultivar resistance

Boundaries of research : civilian leadership, military funding, and the international network surrounding the development of numerical weather prediction in the United States

Development of analytical methodology for verification of authenticity of apple juice

Variation of sugars and acids during ripening of pears and in the production and storage of pear concentrate

The stability of pelargonidin-based anthocyanins in natural and model systems

Structure and conformation of red radish (Raphanus sativus L.) anthocyanins and their effect on color and pigment stability

Characterization and detection of potential adulterants in apple juice by pattern recognition methods

The potato : composition, non-enzymatic browning and anthocyanins

Cherry phytochemicals

Characterization of anthocyanins in fruit juices and natural colorants

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