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

Analysis of flavor precursors in radish and radish color extracts

Creator:: Kucza, Myriam M.
Abstract:: Radish anthocyanin extract has potential as a natural colorant because of its pigment stability and attractive red hue. Presence of undesirable aroma compounds could limit its applications in foods. The pungent principle of radish, 4-methylthio-3-butenyl isothiocyanate (MTBI), is produced enzymatically upon cell injury from its glucosinolate precursor, 4-methylthio-3-butenyl glucosinolate (MTBG),...
Resource Type:: Masters Thesis
Full Text:: Flavor Precursors in Radish and Radish Color Extracts. Abstract approved: Ronald E. Wrolstad Radish

Anthocyanin composition of red raspberry juice : influences of variety, processing, and environmental factors

Creator:: Boyles, Matthew J.
Resource Type:: Masters Thesis
Full Text:: Abstract approved: . _, Dr. Ronald E. Wrolstad Two HPLC (High Pressure Liquid Chromatography

Color and pigment characterization of royal okanogan huckleberry juice

Creator:: Price, Cornelia Lynde
Resource Type:: Masters Thesis
Full Text:: . ■ it Ronald E. Wrolstad Royal Okanogan Huckleberry juice was found to have a high pH (4.4

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

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

Development of a process for production of cantaloupe juice concentrate and determination of its composition and quality

Creator:: Galeb, Abduljalil Derhm Saeed
Abstract:: Fresh ripe, cantaloupes were processed into juice and juice concentrate. Processing trials were conducted on fresh and frozen fruits with and without rind. The effects of maceration enzymes and fining agents on yield and quality were investigated. Compositional measurement included °Brix, pH, titratable acidity, formol values, ascorbic acid content, total...
Resource Type:: Masters Thesis
Full Text:: Composition and Quality Abstract approved . = >][__^ Dr. Ronald E. Wrolstad Fresh ripe, cantaloupes

Radish anthocyanin extract as a natural red colorant for maraschino cherries

Creator:: Hundskopf, Maria Monica Giusti
Abstract:: Red radish anthocyanin extract (RAE) was investigated for coloring brined cherries as an alternative to FD&C Red No. 40. Red radish (Raphanus sativus L.) anthocyanins were extracted from liquid nitrogen powdered epidermal tissue using acetone, partitioned with chloroform, and isolated using C-18 resin. The monomeric anthocyanin content was determined by...
Resource Type:: Masters Thesis
Full Text:: Ronald E. Wrolstad Red radish anthocyanin extract (RAE) was investigated for coloring brined cherries

Extending shelf-life of fresh-cut pears

Creator:: Dong, Xiaoling
Abstract:: Different concentrations of various browning inhibitors and a firming agent were evaluated to prevent browning and softening of Bartlett, Bosc and Anjou pear slices during cold storage at 2-4°C. Browning inhibition effect of Semperfresh, Snow Fresh and cysteine were compared with that of 4-hexylresorcinol (4-HR). The effect of ripeness on...
Resource Type:: Masters Thesis
Full Text:: Shelf-Life of Fresh-Cut Pears Abstract approved: , , Ronald E. Wrolstald Different concentrations

ScholarsArchive@OSU

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

Analysis of flavor precursors in radish and radish color extracts

Anthocyanin composition of red raspberry juice : influences of variety, processing, and environmental factors

Color and pigment characterization of royal okanogan huckleberry juice

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

The potato : composition, non-enzymatic browning and anthocyanins

Development of a process for production of cantaloupe juice concentrate and determination of its composition and quality

Radish anthocyanin extract as a natural red colorant for maraschino cherries

Extending shelf-life of fresh-cut pears

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