Index Catalog // ScholarsArchive@OSU

“Red Light, Yellow Light!”: Evaluating the Anti-Listerial Potential of Bacillus Isolate Metabolites Using a High-Throughput Chromogenic Assay”

Creator:: Johnson, Taylor S.
Abstract:: Listeria monocytogenes contamination continues to pose challenges for the food industry and there is demand for effective methods of food preservation and protection that can also be considered clean label. A promising source of antilisterial compounds may be sourced from bacteria that produce novel byproducts. Ribosomally synthesized and post-translationally modified...
Resource Type:: Masters Thesis

A comparison of porous polymers used in collecting organic volatiles in foods

Creator:: Boyko, Alayne Linda
Abstract:: Porapak Q, Chromosorb 102, and Tenax GC, three porous polymers commonly used as adsorbents in headspace analyses were investigated. The retention times of various low-boiling compounds relative to water were measured on the collection columns to determine which compounds would be lost during the water removal step employed after sampling...
Resource Type:: Masters Thesis
Full Text:: of MASTER OF SCIENCE in Food Science and Technology presented on (J/y^^y /' /?25

A Comprehensive Evaluation of the Nonvolatile Chemistry Affecting the Sensory Bitterness Intensity of Highly Hopped Beers

Creator:: Hahn, Christina
Abstract:: The range of different nonvolatile constituents extracted from hops in highly hopped beers suggests that iso-alpha acids may not be the sole contributor to beers’ bitterness. Among brewers producing hop-forward beer styles there is a growing concern that the Bitterness Unit (BU) is no longer an accurate predictor of beer...
Resource Type:: Masters Thesis

A filter paper assay for low cellulase activities and the cultivation of Trichoderma reesei on acid whey and sweet whey permeate

Creator:: Nordmark, Tor Soren
Abstract:: The traditional filter paper assay for saccharifying cellulase originally described by M. Mandels et al (1976) has been modified to make possible low activity determinations of Trichoderma cellulases. The enzymatic activity appears to decline during a prolonged incubation period if no precautions have been taken. By means of adding bovine...
Resource Type:: Masters Thesis
Full Text:: Commencement June 1994 APPROVED: Professor of Food Science and Technology in charge of major y" 1r

A guide to the fermentation and distillation of whey for potable spirit production

Creator:: Risner, Derrick
Abstract:: Whey is co-product of cheese production and is produced at 9:1 whey to cheese ratio. Whey is broadly classified into two types, sweet and acid whey. Large cheese manufacturers have developed whey processing techniques to convert sweet whey into value added products such as protein powders and emulsifiers. Acid whey...
Resource Type:: Masters Thesis

A maturity trial study of Pinot noir wines : aroma profile by sniffing gas chromatographic effluent

Creator:: Miranda-Lopez, Rita
Abstract:: The quality of wine is highly influenced by the weather. Temperature, solar radiation and humidity influence the formation and concentration of aroma-active compounds and aroma-active precursors in the grapes. Pinot noir grapes require a slow ripening, under cool temperatures, in order to achieve their fullest flavor. The main objective of...
Resource Type:: Masters Thesis
Full Text:: Corvallis as well as those from Mexico. The author thanks CONACyT (Consejo Nacional de Ciencia y

A study of antimutagenicity in yogurt

Creator:: Sudarshan, Nadathur R.
Abstract:: The purpose of this study was to identify antimutagens in yogurt active against the experimental colon carcinogen, N-methyl-N'-nitro-N-nitrosoguanidine (MNNG). Our initial experiments showed that acetone extracts of yogurt, or milk fermented by various lactic acid bacteria were antimutagenic against MNNG and 3,2'-dimethyl-4-aminobiphenyl (DMAB) in the Ames test (Salmonella typhimurium TA...
Resource Type:: Dissertation
Full Text:: APPROVED: i Major Professor, representing Food Science and Technology _«—— y i • 1 £ J :—|—a-z

A study of factors affecting the extraction of flavor when dry hopping beer

Creator:: Wolfe, Peter Harold
Abstract:: This work set out to examine the methodologies of dry hopping, compare different hop materials, and look at the extraction behavior of different types of hop compounds. This work consists of two discrete studies, where the first study informed the design of the second. The first study measured the concentrations...
Resource Type:: Masters Thesis

A study of nisin resistance in Listeria monocytogenes Scott A

Creator:: Ming, Xintian
Abstract:: Eight foodborne pathogenic and spoilage Gram-positive bacteria were evaluated for their spontaneous resistance frequencies to the peptide antimicrobial nisin. In brain heart infusion (BHI) medium, nisin resistance frequencies were in the range of l06 to l08 when exposed to nisin at concentrations 2 to 4 times the minimal inhibitory concentrations....
Resource Type:: Dissertation

A study of the DNA excision repair capabilities of rainbow trout (Salmo gairdneri) exposed to dietary cyclopropenoid fatty acids

Creator:: Collier, John Mark
Abstract:: The DNA repair capabilities of rainbow trout (Salmo gairdneri) were studied vising the method of autoradiography. Trout were fed a semi-purified control diet containing 0 ppm, 50 ppm, or 300 ppm cyclopropenoid fatty acids (CPFA) for 6-9 weeks. Liver slices were prepared and exposed in vitro to a control treatment,...
Resource Type:: Masters Thesis
Full Text:: Cyclopropenoid Fatty Acids Abstract approved: —IT i—*£—y^z- ^*=-—== The CNA repair capabilities of

ScholarsArchive@OSU

“Red Light, Yellow Light!”: Evaluating the Anti-Listerial Potential of Bacillus Isolate Metabolites Using a High-Throughput Chromogenic Assay”

A comparison of porous polymers used in collecting organic volatiles in foods

A Comprehensive Evaluation of the Nonvolatile Chemistry Affecting the Sensory Bitterness Intensity of Highly Hopped Beers

A filter paper assay for low cellulase activities and the cultivation of Trichoderma reesei on acid whey and sweet whey permeate

A guide to the fermentation and distillation of whey for potable spirit production

A maturity trial study of Pinot noir wines : aroma profile by sniffing gas chromatographic effluent

A study of antimutagenicity in yogurt

A study of factors affecting the extraction of flavor when dry hopping beer

A study of nisin resistance in Listeria monocytogenes Scott A

A study of the DNA excision repair capabilities of rainbow trout (Salmo gairdneri) exposed to dietary cyclopropenoid fatty acids

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