Index Catalog // ScholarsArchive@OSU

Genetic Diversity and Antimicrobial Resistance of Listeria monocytogenes within Produce Handling and Processing Environments

Creator:: Bland, Rebecca N.
Abstract:: Listeria monocytogenes is a foodborne pathogen frequently associated with food processing environments. Its presence is particularly concerning in facilities handling minimally processed and ready-to-eat foods. Recent outbreaks associated with fresh produce, such as packaged salads and mushrooms, highlight the need to better understand and control these pathogens in environments that...
Resource Type:: Masters Thesis
Full Text:: also sequenced and their genomes were compared to WT strains. L. monocytogenes isolates (n=48

Determination of selected secondary and tertiary amine alkaloids in barley malt

Creator:: Poocharoen, Boonthong
Abstract:: The malt alkaloids N-methyltyramine, N,N-dimethyltyramine (hordenine), N-methyl-3-aminomethylindole and N,N-dimethyl-3-aminomethylindole (gramine) are known precursors for N-nitrosamines. Analytical procedures were developed and applied to extract and quantify these alkaloids from malt, green malt, malt roots, and raw barley. A ground malt sample under nitrogen atmosphere was extracted with 5 percent concentrated ammonium...
Resource Type:: Dissertation
Full Text:: . A. Scanlan The malt alkaloids N-methyltyramine, N,N-dimethyltyramine (hordenine), N-methyl-3

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:: antimutagens in yogurt active against the experimental colon carcinogen, iV-methyl-W-nitro-N-nitrosoguanidine

Molecular cloning and sequence analysis of cystatin from rainbow trout (Oncorhynchus mykiss)

Creator:: Li, Fugen
Abstract:: A partial cystatin cDNA from rainbow trout was generated by reverse transcription polymerase chain reaction with two degenerate primers. The partial cystatin PCR product was 168 bp and used to screen trout liver λgt 11 cDNA library. Four positive clones were isolated and designated as cstl, cst2, cst3 and cst4....
Resource Type:: Masters Thesis
Full Text:: of family II cystatin indicated that the 21 amino acids at N-terminal end is a signal peptide

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:: they are: S-sinapyl-L-cysteine, N-L-y-glutamyl-S-sinapyl-L-cysteine, and S-sinapyl glutathione. This

Further Optimization of Controlled Depuration for Eliminating Vibrio parahaemolyticus from Raw Oysters for Safe Consumption

Creator:: Ming, Ziwen
Abstract:: Vibrio parahaemolyticus infections in the United Stated have been linked to consumption of raw shellfish, particularly oysters, with symptoms of headache, abdominal pain, nausea, diarrhea, vomiting. Depuration, as a post-harvest process, has a long history of being applied in shellfish industry to reduce sewage bacteria. In order to reduce the...
Resource Type:: Masters Thesis
Full Text:: oysters for raw consumption. Pacific oysters (Crassostrea gigas; n = 35 per trial) were inoculated

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:: weight and location, with higher amounts obtained at Hermiston. Spring cultivars (n=22) had

Efficacy of Sanitizers at Controlling Listeria spp. and Listeria monocytogenes When Challenged with Variables Commonly Encountered in Food Processing Environments

Creator:: Boucher, Cara
Abstract:: Listeria monocytogenes (Lm) is a pathogenic bacterium associated with the foodborne disease listeriosis in humans. Listeriosis affects thousands of people in the U.S. yearly, with neonates, elderly, pregnant women, and immunocompromised persons disproportionately affected. Lm has a high mortality rate in these populations (20 - 30%) with symptoms including septicemia,...
Resource Type:: Masters Thesis
Full Text:: , against Listeria spp. (n=22) at temperatures ranging from 4 – 30oC; (ii) to evaluate the behavior of Lm

Mechanisms of action by some inhibitors of aflatoxin B₁ carcinogenesis in rainbow trout

Creator:: Goeger, Douglas Eugene
Abstract:: Indole-3-carbinol (I3C) and butylated hydroxyanisole (BHA), anti-carcinogens present in the human diet, were tested for their in vivo and in vitro effect on aflatoxin B₁. (AFB₁) metabolism, and DNA adduct formation in the rainbow trout. Dietary BHA at either 0.3 or 0.03% had no effect on the hepatic tumor incidence...
Resource Type:: Dissertation
Full Text:: aflatoxicol-n. glucuronide levels over controls. AFL glucuronide levels were similar between treatments

The Preparation and Human Taste Detection of Maltooligosaccharides with Varying Degrees of Polymerization

Creator:: Andrewson, Toren S.
Abstract:: Starch is a significant component of the human diet and the glucose produced through its digestion provides a critical source of energy. When starch enters the mouth, salivary α-amylase hydrolyzes it into maltooligosaccharides (MOS, degree of polymerization [DP] 3-20) and maltopolysaccharides (MPS, DP >20). Previous studies have found that humans...
Resource Type:: Masters Thesis
Full Text:: . Psychophysical testing (n = 19) indicates that all samples are detectable to a similar degree at 75 mM

ScholarsArchive@OSU

Genetic Diversity and Antimicrobial Resistance of Listeria monocytogenes within Produce Handling and Processing Environments

Determination of selected secondary and tertiary amine alkaloids in barley malt

A study of antimutagenicity in yogurt

Molecular cloning and sequence analysis of cystatin from rainbow trout (Oncorhynchus mykiss)

Pineapple juice : phenolic composition and enzymatic browning inhibition

Further Optimization of Controlled Depuration for Eliminating Vibrio parahaemolyticus from Raw Oysters for Safe Consumption

Structure and conformation of red radish (Raphanus sativus L.) anthocyanins and their effect on color and pigment stability

Efficacy of Sanitizers at Controlling Listeria spp. and Listeria monocytogenes When Challenged with Variables Commonly Encountered in Food Processing Environments

Mechanisms of action by some inhibitors of aflatoxin B₁ carcinogenesis in rainbow trout

The Preparation and Human Taste Detection of Maltooligosaccharides with Varying Degrees of Polymerization

Limit your search

Academic Affiliation

Advisor

Commencement Year

Committee Member

Creator

Date

Decade

Degree Field

Degree Level

Degree Name

File Format

Funding Body

Language

License

Non-Academic Affiliation

Peer Reviewed

Resource Type

Rights Statement

Subject

Search Constraints

Search Results

Limit your search