Index Catalog // ScholarsArchive@OSU

Investigation of postharvest quality and storability of hardy kiwifruit (Actinidia arguta 'Ananasnaya')

Creator:: Landis Fisk, Connie
Abstract:: The objectives of this project were to determine the effects of harvest maturity, packaging, and storage conditions on subsequent fruit quality of Actinidia arguta ‘Ananasnaya’ and to investigate the use of edible coatings to improve fruit quality and storage life. The influences of harvest maturity (6.0, 8.7, 9.1, and 15.1%...
Resource Type:: Masters Thesis
Full Text:: ). Hue angles ranged from 75.4-97.5; the only significant (p<0.05) difference found was for

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:: Todisco, S.; Calabro, V.; Iorio, G (1994) A kinetic model for the pectin hydrolysis using an endo-acting

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
Full Text:: -glucoside monomers based on substitution pattern commonly found in V. vinifera

Hop bittering compounds and their impact on peak bitterness on lager beer

Creator:: Fritsch, Annette N.
Abstract:: Hop derived bitter compounds, including alpha-acids, reduced and non-reduced iso-alpha-acids, were evaluated for their contribution to peak bitter intensity in lager beer. Alpha-acids are the precursors to the major bittering components in beer (iso-alpha-acids). Typically, alpha-acids do not survive the brewing process, but if a product is dry-hopped, they may...
Resource Type:: Masters Thesis
Full Text:: -alpha acids. The alpha acids were initially dissolved at a 0.5% w/v in food-grade ethanol. The

Characterization by optical methods of the heat denaturation of bovine serum albumin (BSA) as affected by protein concentration, pH, ionic strength and sugar concentration

Creator:: Kongraksawech, Teepakorn
Abstract:: The thermal denaturation of proteins has been extensively studied using several methods including differential scanning calorimetry (DSC). A custom-built optical system was used to study thermal effects on protein as an alternative method to DSC measurements. It was used to investigate the thermal stability of bovine serum albumin (BSA) with...
Resource Type:: Masters Thesis
Full Text:: performed on 1, 2.5 and 5% (w/v) BSA in 0.01 M phosphate buffer at pH 7 and ionic strength (IS) 0.08

Composition of flavonoid phenolic polymers isolated from red wine during maceration and significance of flavan-3-ols in foods pertaining to biological activity

Creator:: Aron, Patricia M.
Abstract:: Representing the most common flavonoid consumed in the American diet, the flavanols and their polymeric condensation products, the proanthocyanidins, are regarded as functional ingredients in various beverages, whole and processed foods, herbal remedies and supplements. Their presence in food affects food quality parameters including astringency, bitterness, sourness, sweetness, salivary viscosity,...
Resource Type:: Masters Thesis
Full Text:: transferred to the proanthocyanidin (P●) (Figure 1.6). Often considered better than vitamins C and E

Flavor composition of transgenic raspberry bushy dwarf virus-resistant 'Meeker' raspberries

Creator:: Malowicki, Sarah Marie-Mahler
Abstract:: Raspberries have been popular since the time of the ancient Greeks. Red raspberries are cultivated throughout the world, particularly in the Pacific Northwest region of the United States and Canada. The raspberry bushy dwarf virus (RBDV) causes significant reduction in yield and crumbly fruit in raspberries, blackberries and raspberry-blackberry hybrids....
Resource Type:: Masters Thesis
Full Text:: form p-coumaric acid (37). This pathway is also believed to be responsible for the formation

Efficacy of electrolyzed oxidizing water and ozonated water for microbialdecontamination of fresh strawberries (Fragaria x ananassa)

Creator:: Udompijitkul, Pathima
Abstract:: The objectives of this project were to evaluate the efficacies of electrolyzed oxidizing (EO) and ozonated waters as antimicrobial agents for enhancing the microbiological safety of fresh strawberries (Fragaria x ananassa). The influence of sodium chloride (NaCl) concentrations used for preparing EO water was evaluated on their bactericidal activities against...
Resource Type:: Masters Thesis
Full Text:: 15 min in EO water prepared from 0.10% (w/v) NaCl solution. Bactericidal activity of treatment

Low-temperature post-harvest processing for reducing Vibrio parahaemolyticus and Vibrio vulnificus in raw oysters

Creator:: Chae, Minjung
Abstract:: Oysters are filter-feeding bivalves, which filter water for nutrients and often accumulate contaminants and human pathogens such as Vibrio parahaemolyticus and Vibrio vulnificus naturally occurring in the marine environment. These naturally occurring pathogens have been frequently isolated from raw shellfish, particularly oyster, in the United States and are recognized as...
Resource Type:: Masters Thesis
Full Text:: . Hollisae V. metschniko vii TCBS agar G a G Y b Y G Y Y NG c Y mCPC agar NG Y P d NG NG NG NG NG NG

Analytical approach to the quantitative analysis of silicon in plants : its application to plant silica extraction

Creator:: Boone, Carmen E.
Abstract:: The literature available on the silica content of herbaceous biomass, and its relative mobility in leaching/extraction systems, includes studies that have employed several different methods for silica quantification. This makes comparison of the data difficult. The objective of this thesis research was to determine the quantitative relationships between the measured...
Resource Type:: Masters Thesis
Full Text:: were significantly different (P>0.05). The major difference in the colorimetric methods was found

Effect of berry integrity on proanthocyanidin extraction during wine production

Creator:: Cerpa-Calderon, Fiorella Karen
Abstract:: Proanthocyanidins are a grape-derived phenolic class of compound that provide wine with bitterness and astringency. Because of this, proanthocyanidins are considered to be essential components of wine quality. Proanthocyanidins are localized in the seed, skin and stem tissue of the grape berry and the composition of proanthocyanidins will vary depending...
Resource Type:: Masters Thesis
Full Text:: 2:1 v/v acetone:water solution (1 mL/g fresh berry weight) Flasks were covered with aluminum foil

Physicochemical properties of Alaska pollock surimi as affected by salinity and freeze-thaw cycles

Creator:: Kang, Ey Jung
Abstract:: The effects of the residual salt of surimi on biochemical and physical properties as affected by various freeze and thaw cycles were examined. Fresh Alaska pollock (Theragra chalcogramma) surimi was mixed with 4.0% sugar, and 5.0% sorbitol, along with eight combinations of salt (0.4, 0.6, 0.8, and 1.0 % NaCl)...
Resource Type:: Masters Thesis
Full Text:: -sulfonate (ANS-), its dimeric form (bis-ANS2-), and 6-(p-toluidinyl) naphthalene-2-sulfonate (TNS-). These

Quantification of fructose equivalents in straw extracts

Creator:: Kim, Eugene
Abstract:: Cereal and commercial grass-seed straws are abundant plant biomass materials that are currently being considered for application in industrial processes aimed at the production of biofuels, biomaterials, and biochemicals. The carbohydrate fraction of these straws is of particular interest in this context due to its chemical functionality and relative ease...
Resource Type:: Masters Thesis
Full Text:: , gums, tannins, and soluble sugars. Important mineral elements in cell walls are Ca, P, and Si

Assessing the impact of temperature on grape phenolic metabolism

Creator:: Cohen, Seth D.
Abstract:: Many climatic factors influence grape berry composition including nutrient status, water availability, biotic stress, sun exposure and temperature. Previous research examined the effects of many factors listed above and much progress has been made. It is often difficult, however, to separate effects that typically confound each other, such as sun...
Resource Type:: Masters Thesis
Full Text:: derivatives), which can be further modified to produce hydroxycinnamoyl CoA’s (e.g. p-coumaryl CoA). The

Pineapple juice : phenolic composition and enzymatic browning inhibition

Creator:: Wen, Ling
Abstract:: The phenolic profile of pineapple juice was analyzed by reverse-phase HPLC/Diode Array Detector, and 9 major peaks accounting for 70% of total peak area were characterized. None of these peaks are represented by the pineapple phenolics reported to be present by previous workers. Most of the major peaks are not...
Resource Type:: Dissertation
Full Text:: added ascorbic acid in canned juice, and possibly by a p ossibly v ery p olar o rganic acid (neither

Evaluation of the off-flavor in English sole (Parophrys vetulus) using descriptive analysis techniques and consumer testing

Creator:: Geise, Laura Ann
Abstract:: English sole (Parophrys vetulus) is a flatfish found in abundance in the Pacific Ocean and is part of the Pacific Northwest's and California's commercial trawl fishery. Stock levels of this fish are at all time highs but there are decreased landings due to low demand and acceptability. With new regulations...
Resource Type:: Masters Thesis
Full Text:: Boisvert at Pacific Coast Seafoods, Astoria, OR; Blair Miner of the F/V Columbia Star. I would also

Electrolyzed oxidizing water treatment as a post-harvest process for controlling histamine formation in fish

Creator:: Phuvasate, Sureerat
Abstract:: Scombroid poisoning, caused by histamine intoxication, is one of the most prevalent illnesses associated with seafood consumption in the United States. The illness is usually accompanied with a variety of symptoms, such as rash, nausea, diarrhea, flushing, sweating, and headache. Incidence of scombroid poisoning has been consistently reported in the...
Resource Type:: Masters Thesis
Full Text:: . James P. Osborne, and Dr. Patricia A. Skinkis for serving on my committee. My thanks to faculties and

Foam enhancing properties of hop bitter acids and propylene glycol alginate

Creator:: Kunimune, Takeshi
Abstract:: The following two projects have been carried out to clarify the impact of these foam stabilizers, and to compare their foam stabilizing power to one another as well as the cling ability. The first project investigated the impacts of four commercially available hop- derived foam stabilizers; iso-alpha-acid (Iso), rho(dyhydro)-iso-alpha-acid (Rho),...
Resource Type:: Masters Thesis
Full Text:: 1-3% v/v in the beer matrix was found to be significantly cling-positive, while 4-5% v/v showed

Impact of weak and strong acids on the destruction of lactic acid bacteria during high pressure processing

Creator:: Sarangapani, Rama Krishna
Abstract:: High hydrostatic pressure (HHP) affects the pH of weak acids due to an increased degree of acid dissociation while under pressure. The temporary pH reduction by high pressure in such a case may influence the barotolerance of microorganisms. The objective of this study was to determine the impact of weak...
Resource Type:: Masters Thesis
Full Text:: pressure dependency of the equilibrium constant (Ka) is given by: RT )P(V dP Klnd a oΔ = In the

Characterization of myosin, myoglobin, and phospholipids isolated from Pacific sardine (Sadinops sagax)

Creator:: Park, Joo Dong
Abstract:: Myoglobin (Mb) was extracted from Pacific sardine and added to Pacific whiting surimi to measure its effects on protein gelation. The purity of Mb extract was determined by SDS-PAGE. Mb extracted using ethanol showed higher purity than Mb extract using ammonium sulfate. The addition of 0.2% Mb significantly reduced breaking...
Resource Type:: Dissertation
Full Text:: difference (P < 0.05) ……….. 39 3.4 Whiteness of Pacific whiting gels prepared at various Mb contents

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