Index Catalog // ScholarsArchive@OSU

The influence of polyphenols and humulinones on bitterness in dry-hopped beer

Creator:: Parkin, Ellen Jane
Abstract:: This research sought to determine the origin of bitterness as a result of dry-hopping. An unhopped ale was dry-hopped and examined in the controlled dry-hop experiment and commercial beers were examined for chemical changes from dry-hopping in the commercially dry-hopped beer survey. This thesis work suggested specific bitter hop components...
Resource Type:: Masters Thesis
Full Text:: ) bitterness units, (B) polyphenols (mg/L), (C) total IAA (mg/L), (D) humulinones (mg/L), (E) hulupones (mg/L

Characterization of Bloomy Rind Cheese Recipes and the Impact of High Pressure Processing (HPP) on Cheese Quality

Creator:: Batty, Danton K. C.
Abstract:: Bloomy rind cheeses, including Camembert and Brie type cheeses, are highly susceptible to contamination by environmental pathogens during their manufacture and ripening. These cheeses undergo many physiochemical changes during ripening that provides these pathogens with a suitable environment to grow. One example of this change is an increase of pH...
Resource Type:: Masters Thesis
Full Text:: represented by L* (●), a* (○), and b* (△). d) Paste displacement: 15 min (●); 30 min (●); 45 min (●); 60 min

An Exploration of Cheese Safety Parameters and Aging as Mitigation Strategy for Foodborne Pathogens in Cheese

Creator:: Riesgaard, Brandon
Abstract:: Pasteurization is an effective method of reducing risks associated with foodborne pathogens in raw milk. Cheese made from raw milk has a higher potential to harbor harmful bacterial pathogens. However, some cheesemakers prefer to use unpasteurized milk to preserve the natural microflora present in the raw milk and to prevent...
Resource Type:: Masters Thesis
Full Text:: , with L. monocytogenes WRLP85 persisting at relatively high levels throughout the aging period. L

The preparation and human taste detection of low degree of polymerization glucose oligomers

Creator:: Pullicin, Alexa J.
Abstract:: There is growing evidence that humans and other animals can taste certain starch hydrolysis products, namely, maltooligosaccharides (MOS), and that their detection is independent of the known sweet receptor, T1R2 T1R3. The overall goal of this study was to further investigate the taste perception of low degree-of-polymerization (DP) MOS in...
Resource Type:: Masters Thesis
Full Text:: . After completing psychophys ica l testing, modifications to the MOS fractionation protocol

Human bitterness detection thresholds of hop acids in beer and honey

Creator:: Kolpin, Kathryn M.
Abstract:: Alpha acids are found in the lupulin glands of hops cones. These acids have no bitterness of their own, but can be isomerized and subsequently hydrogenated to form bitter iso-α-acids and tetrahydroiso-α-acids respectively. Current literature values for the detection thresholds of iso-α-acid and tetrahydroiso-α-acid in lager beer have been reported...
Resource Type:: Masters Thesis
Full Text:: Page 2.1: ASTM method 679 best estimate iso thresholds (mg/L) for each panelist by day, and ASTM

The effect of wine matrix on the analysis of volatile sulfur compounds by solid-phase microextraction-GC-PFPD

Creator:: Davis, Peter M.
Abstract:: Constituents of the wine matrix, including ethanol, affect adsorption of sulfur volatiles on solid-phase microextraction (SPME) fibers, which can impact sensitivity and accuracy of volatile sulfur analysis in wine. Several common wine sulfur volatiles, including hydrogen sulfide (H2S), methanethiol (MeSH), dimethyl sulfide (DMS), dimethyl disulfide (DMDS), dimethyl trisulfide (DMTS), diethyl...
Resource Type:: Masters Thesis
Full Text:: . Acree et al. [43] observed in 1972 that synthetic musts with a 10 mg/L sulfur addition suffered from

The Examination of Escherichia coli Contamination via Agricultural Water Applications and Survival During Pre-Harvest Field Curing of Dry Bulb Onions

Creator:: Racine, Jason R.
Abstract:: 2020 and 2021 brought the first reported outbreaks of salmonellosis epidemiologically linked to dry bulb onions in the United States. Outbreak investigations were not able to implicate a specific source of the contamination but speculated that contaminated water was a significant contributor. The Produce Safety Rule established minimum standards for...
Resource Type:: Masters Thesis
Full Text:: Escherichia coli in water. J. Food Prot. 85:1614–1624. 23. Topalcengiz, Z., L. K. Strawn, and M. D

Metabolic Effects in C57B/6J Mice Fed a High-Fat Diet Supplemented With Walnuts, Raspberries and Other Whole Foods

Creator:: Miranda-Garcia, Omar
Abstract:: Health benefits obtained from consumption of fruits and vegetables have the potential to improve the lifestyle of individuals. The walnut is a polyunsaturated fatty acid (PUFA)-rich whole food that is readily available in the U.S and has been shown to potentially reduce risk of Metabolic Syndrome. Furthermore, consumption of polyphenol...
Resource Type:: Masters Thesis
Full Text:: acid (DPA) (C), and Docosahexaenoic acid (DHA) (D). A B C D 21

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:: values from different authors that range between 0.13-0.21gSiO2/L at room temperature. Their

Effects of refrigeration storage and processing technologies on the bioactive compounds and antioxidant capacities of blackberries ('Marion' and 'Evergreen')

Creator:: Wu, Ruyi
Abstract:: The objective of this project was to investigate the effects of refrigeration storage and processing technologies on the quality and nutraceutical benefit of blackberries. 'Marion' and 'Evergreen', the two major blackberry varieties in Oregon, were evaluated in this study. For refrigeration storage, fresh fruit were packed in clam-shell containers right...
Resource Type:: Masters Thesis
Full Text:: , maturity, and sampling on blackberry (Rubus L. Hybrids) anthocyanins, polyphenolics, and antioxidant

ScholarsArchive@OSU

The influence of polyphenols and humulinones on bitterness in dry-hopped beer

Characterization of Bloomy Rind Cheese Recipes and the Impact of High Pressure Processing (HPP) on Cheese Quality

An Exploration of Cheese Safety Parameters and Aging as Mitigation Strategy for Foodborne Pathogens in Cheese

The preparation and human taste detection of low degree of polymerization glucose oligomers

Human bitterness detection thresholds of hop acids in beer and honey

The effect of wine matrix on the analysis of volatile sulfur compounds by solid-phase microextraction-GC-PFPD

The Examination of Escherichia coli Contamination via Agricultural Water Applications and Survival During Pre-Harvest Field Curing of Dry Bulb Onions

Metabolic Effects in C57B/6J Mice Fed a High-Fat Diet Supplemented With Walnuts, Raspberries and Other Whole Foods

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

Effects of refrigeration storage and processing technologies on the bioactive compounds and antioxidant capacities of blackberries ('Marion' and 'Evergreen')

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