Index Catalog // ScholarsArchive@OSU

The Quality and Price Implications of Ingredient Lists for Dairy Products

Creator:: Maruyama, Sara
Abstract:: The clean label movement is a persistent, consumer-driven trend that has shifted consumer preferences in favor of foods considered to be more natural. Although lacking legal definitions in food labeling, the terms “natural” and “clean label” are generally used to characterize foods that have short, minimal ingredient lists containing simple...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Sara Maruyama for

Contribution of Farm Level Milk Sourcing on Non-Starter Lactic Acid Bacteria (NSLAB) in Cheddar, and the Assessment of High Resolution Melt Analysis used for Species Identification

Creator:: Baird, Christopher S.
Abstract:: Non-starter lactic acid bacteria (NSLAB) are found at low levels in fresh raw milk and are important to the dairy industry because of their potential impact on the flavor and texture of yogurt, sour cream, and cheese. The purpose of this study was to evaluate three methods for the identification...
Resource Type:: Masters Thesis
Full Text:: resolution melt curves P1V1/P2V1 amplicon for isolates identified as A) Lb. paracasei, B) Lb. rhamnosus, C

Investigating the effects of temperature on secondary metabolism in Vitis vinifera L. cv. merlot berries

Creator:: Cohen, Seth D.
Abstract:: Grapes (e.g. Vitis vinifera L.) are one of the more important fruit crops from an economic standpoint with world market values over 550 million US dollars in 2007 and 2008, second to apples (United States Department of Agriculture). While a satisfactory level of ripeness is of primary concern, the quality...
Resource Type:: Dissertation
Full Text:: committee; Dr. Brian K. Bay, Dr. Mark A. Daeschel, Dr. Simon P. Robinson, Dr. Patricia Skinkis, and Dr

Isolation and survival of Campylobacter jejuni in foods

Creator:: Timm, Elizabeth M.
Abstract:: The objective of this project was to evaluate various culturing and isolation techniques of Campylobacter jejuni and to develop methods to detect the organism in foods. The morphological, cultural and biochemical characteristics of C. jejuni were studied using developed microbiological methods. A variety of media, broths, microaerophilic atmospheres and diluents,...
Resource Type:: Masters Thesis
Full Text:: recover C^. jejuni from seeded milk and fowl samples. As few as 16 organisms per ml of milk could be

Volatile composition of Pinot Noir grapes and wines under different viticultural practices in western Oregon

Creator:: Feng, Hui
Abstract:: High vegetative growth of Pinot Noir vine is a common problem in most vineyards of Oregon's Willamette Valley, where sunlight exposure and heat accumulation are limited. Consequently, growers in this region commonly use vineyard management strategies to regulate vine vigor and improve grape and wine quality. Wine quality is greatly...
Resource Type:: Dissertation
Full Text:: Western Oregon Abstract approved: Michael C. Qian High vegetative growth of Pinot

Composition of Pinot noir Wines Produced from Different Crop Levels

Creator:: Li, Jingwen
Abstract:: The production of high-quality wine is an important target for wineries worldwide, and low crop level (yield) has been one vineyard management criterion long believed to achieve wine quality. Low yields are most often achieved by removing clusters from the grapevine. Some studies show that cluster thinning can enhance grape...
Resource Type:: Masters Thesis
Full Text:: Abstract approved: _____________________________________________________ Michael C. Qian

Grape and Wine Aroma Influenced by Vine Nutrient Status, Vigor and Crop Levels in Oregon Pinot Noir

Creator:: Yuan, Fang
Abstract:: Wine volatile composition is one of the most important constitutes of wine quality, and it is greatly influenced by number of factors. The studies herein were conducted to evaluate the grape and wine aroma affected by different vine nutrient status, vigor and crop levels of Oregon Pinot noir. In the...
Resource Type:: Dissertation
Full Text:: Noir Abstract approved: Michael C. Qian Wine volatile composition is one of the most

Intrinsic and extrinsic quality of West Coast albacore tuna (Thunnus alalunga)

Creator:: Wheeler, Sena C.
Abstract:: The purpose of this study is to identify the intrinsic and extrinsic quality characteristics of West Coast albacore tuna (Thunnus alalunga). Albacore tuna were troll caught off the Oregon coast and transferred to the Oregon State University Seafood laboratory in Astoria, Oregon. Core samples were extracted from six designated body...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Sena C. Wheeler for the degree of

Effects of temperature and holding time during pre-blanch on pH, pectic substances and quality characteristics of canned green beans

Creator:: Boni, Magloire C.
Abstract:: Physical, chemical and sensory attributes were examined on canned green beans (Oregon 1604) of sieve sizes 3 & 4 and 5 & 6 after one and three months of storage at room temperature (RT). The green beans subjected to different pre-blanch conditions in water (T1t1: 160°F - 30 min.; T1t2:...
Resource Type:: Masters Thesis
Full Text:: QUALITY CHARACTERISTICS OF CANNED GREEN BEANS by MAGLOIRE C. BONI A THESIS submitted to Oregon

The Biotransformation of Hop Aroma: An Exploration into Yeasts' Ability to Release Polyfunctional Thiols in Beer

Creator:: Molitor, Richard W.
Abstract:: The biotransformation of hop aroma via yeast is a prominent topic in the brewing industry with considerable interest placed on how yeast can enhance volatile thiol production during wort fermentation. Three potent thiols are known contributors to tropical qualities in wine and beer aroma, specifically 3-mercaptohexan-1-ol (3MH), 3-mercaptohexyl acetate (3MHA),...
Resource Type:: Masters Thesis
Full Text:: . Depew, Sara E. Stadulis; data collection: Richard W. Molitor, Charles J. Depew, and Daniel S. Liu

The preparation of common prebiotic oligosaccharides with defined degree of polymerization

Creator:: Ooi, Megan C. Y.
Abstract:: Prebiotics are a subset of dietary fiber that is growing in demand within the food industry. The health benefits of prebiotics have been well established, leading to the increase in its incorporation into various food products. Given the importance of prebiotics as functional ingredients, it is important to understand their...
Resource Type:: Masters Thesis
Full Text:: Pullicin, Sara Maruyama, Tori Andrewson, and Laura Martin – it has been a pleasure working alongside you

An evaluation of blackberry harvest sanitation and the ability of foodborne pathogens to survive in blackberry products

Creator:: Sales, Melissa M.
Abstract:: Blackberries, genus Rubus, are an important Oregon agricultural commodity. In their fresh and processed forms, they offer many health benefits and may be able to help Americans better achieve fruit consumption recommendations because of convenience and pleasant sensory qualities. However, the susceptibility of blackberry products to contamination with bacterial pathogens...
Resource Type:: Masters Thesis
Full Text:: months at -23.3°C. Lastly, juice and wine were made from ‘Marion’ and ‘Black Diamond’ purees. The

Impact of lees content, nitrogen, and elemental sulfur on volatile sulfur compound formation in Vitis vinifera L. cv. 'Pinot noir' wine

Creator:: Kraft, Daniel N.
Abstract:: One of the most common problems in wine production is the formation of hydrogen sulfide (H₂S) and other volatile sulfur compounds (VSCs), which can mask positive aromas at low concentrations and result in unpleasant aromas such as rotten egg, cabbage, garlic, and rubber at higher concentrations. Despite the large body...
Resource Type:: Masters Thesis
Full Text:: at 27°C and H2S production was again measured using lead acetate tubes. Wines were assessed for

Effect of organic production system and harvest date on the quality of blackberry fruit for fresh and processed markets

Creator:: Liu, Mingyang
Abstract:: Blackberry (Rubus sp.) fruit are a good source of phenolic compounds and anthocyanins, and are consumed in fresh and processed forms. Though organic products become more popular, limited information is available about how different organic production methods affect the post-harvest quality of blackberry fruit. The objective of this project was...
Resource Type:: Masters Thesis
Full Text:: blackberry production. HortTechnology 17 (2):205-213 Türkben C, Sarıburun E, Demir C, Uylaşer V (2010

Roles of microorganisms in the deterioriation of rockfish

Creator:: Lobben, J. C. and Lee, J. S.
Abstract:: Seven species of microorganisms indigenous to fish were inoculated into sterile fish muscle, obtained from Sebastodes alutus and Sebastalobus alascanus, and the production of total volatile acids (TVA) and total volatile bases (TVB) was determined during storage at 1 C. No production of TVA and TVB was noted in sterile...
Resource Type:: Capstone Project
Full Text:: production of total volatile acids (TVA) and total volatile bases (TVB) were determined during 1 C storage

Low-temperature depuration and low-temperature high hydrostatic pressure processing as post-harvest interventions for diminishing Vibrio parahaemolyticus contamination in oysters

Creator:: Phuvasate, Sureerat
Abstract:: Vibrio parahaemolyticus is a leading cause of acute gastroenteritis associated with consumption of seafood, particularly raw oysters. The United States Centers for Disease Control and Prevention (CDC) estimated that 45,000 cases of V. parahaemolyticus infection occur each year in the U.S. A recent CDC report revealed that the incidence of...
Resource Type:: Dissertation
Full Text:: , 10, 12.5, and 15 °C) for 4 to 6 days. Depuration of oysters at 2 or 3 °C for 4 days did not result

Ultrafiltration of grape juice : effects on composition, quality and preservation

Creator:: Fombin, Joseph Forchap
Abstract:: Ultrafiltration (UF), using Romicon pilot-scale hollow-fiber cartridges (Model HFXS-MK11) in the batch mode, was investigated as a possible procedure for clarifying, stabilizing and preserving White Riesling (WR) and Thompson Seedless (ThS) grape juice. The effect of UF processing of SO₂-treated or untreated juice, of process temperature and membrane molecular weight...
Resource Type:: Masters Thesis
Full Text:: c ^0 o c y 0„ o OO ZZJtBmtfDJ — \ ^ SALTS (7.1-71 PS.) ^SOLVENT

Color of strawberry juice and concentrate as influenced by heating and storage temperatures

Creator:: Hassanein, Sitir M.
Abstract:: This investigation was conducted to study the effects of blanching and storage temperatures on the color of strawberry juice and concentrate. Strawberry juice and concentrate (42°βrix) were prepared from blanched crushed Tioga strawberries. Crushed strawberries were blanched, in a steam-jacketed kettle, at 70°, 80°, and 90°C for 1 min. Ascorbic...
Resource Type:: Masters Thesis
Full Text:: the juice and concentrate. Blanching at 80 C for 1 min was the optimum processing temp- erature

Molecular mechanism of germination of Clostridium perfringens spores

Creator:: Paredes-Sabja, Daniel
Abstract:: Clostridium perfringens is the causative agent of a wide variety of diseases in animals and humans. C. perfringens can produce more than 15 toxins. However, individual strains produce a subset of these toxins. Although a small percentage of C. perfringens isolates (mostly belonging to type A) produce C. perfringens enterotoxin...
Resource Type:: Dissertation
Full Text:: a wide variety of diseases in animals and humans. C. perfringens can produce more than 15 toxins

Interrelationships among changes in flavor and aroma, and composition of stored strawberry juice concentrate

Creator:: Lundahl, David S.
Abstract:: Sensory evaluation and instrumental methods were applied to the evaluation of strawberry juice concentrate (68°Brix) stored at 20°C which had been produced both commercially (C-SJC) and in a pilot plant (SJC). Sensory evaluation included taste and aroma ratings by intensity scaling and time-intensity of taste, and visual colorimetry by matching...
Resource Type:: Dissertation
Full Text:: Abstract approved: .. "-* -c^-^^ " -v — Dr. Mina McDaniel Sensory evaluation and instrumental

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