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Inhibition of Escherichia coli trimethylamine-N-oxide reductase by food preservatives

Creator:: Kruk, Mark W.
Abstract:: Trimethylamine-N-oxide (TMA-0) reductase activity of resting cells of Escherichia coli was inhibited by tetrasodium ethylenediaminetetraacetate (Na₄EDTA), benzoic acid (BA), and methylparaben (MP). The 50% inhibitory concentrations of Na₄EDTA, BA, and MP were 20.2, 1.2, and 32.4 mM, respectively. BA at pH 6.5 or below most effectively inhibited the TMA-0 reductase....
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF MARK W. KRUK for the degree of

Characterization of Arthrobacter species isolated from marine and seafood sources

Creator:: McKenzie, Stephen M.
Abstract:: Forty Arthrobacter species isolated from Pacific and Atlantic fishery sources were examined to determine their significance in seafood. All strains were able to utilize inorganic nitrogen as the sole nitrogen source and grew in the absence of vitamins or growth factors. In addition, 78% grew on a medium containing only...
Resource Type:: Masters Thesis
Full Text:: by Kathryn Miller for Stephen M. McKenzie ACKNOWLEDGMENTS I would like to thank Dr. Jong S. Lee

Nutritional and biochemical characterization of Moraxella species isolated from fishery sources

Creator:: Vernon, Stephen M.
Abstract:: One hundred and fourteen strains of Moraxella species isolated from marine fishery sources were investigated to determine the cause of this organism's predominance in seafood. The nutritional requirements, effect of pH, NaCl concentration, and temperature on growth, utilization of carbohydrates, protein, and lipid, resistance to 12 antibiotics, sensitivity to phenethyl...
Resource Type:: Masters Thesis
Full Text:: AN ABSTRACT OF THE THESIS OF Stephen M. Vernon for the degree

Physicochemical Properties of Frozen Fish Muscle as Affected by Trimethylamine-N-oxide demethylase (TMAOase)

Creator:: Lee, Jinhwan
Abstract:: Gadoid fish, like Alaska pollock and Pacific whiting, have a high level of trimethylamine-N-oxide demethylase (TMAOase) that catalyzes the breakdown of trimethylamine-N-oxide (TMAO) to formaldehyde (FA) and dimethylamine (DMA) even during frozen storage. FA reacts with amino acid residues to promote covalent cross-links in the formation of inter- and intramolecular...
Resource Type:: Dissertation
Full Text:: ) JINHWAN LEE 2016

Heterotrophic bacteria associated with a feed algae for oyster larvae

Creator:: Johnson, Lynn I.
Abstract:: Aerobic heterotrophic bacteria associated with oyster larvae feed algae Isochrysis galbana, Monochrysis lutheri and Pseudoisochrysis paradoxa were isolated and enumerated. The bacterial numbers ranged from 7.8x10³ to 3.9x10⁶ CFU per ml. The bacteria associated with Pseudoisochrysis sp. were identified and the majority of isolates belonged to genera Leucothrix (51%). Also...
Resource Type:: Masters Thesis
Full Text:: ^^^^ T)r. Jdrig S. Lee f Aerobic heterotrophic bacteria associated with oyster larvae feed algae

Aflatoxin B₁ metabolism by rainbow trout (Salmo gairdneri)

Creator:: Schoenhard, Grant Louis
Abstract:: Aflatoxins B₁, Q₁ and aflatoxicol, R [subscript o] F, but not B₂ were activated in the presence of NADPH by the 105,000 x g pellet from rainbow trout (Salmo gairdneri), Mt. Shasta strain, liver to products lethal to Bacillus subtilis GSY 1057 (metB4, hisAl, uvr-1). Electron microscopy confirmed the microsomal...
Resource Type:: Dissertation
Full Text:: and three extremely polar metabolites designated NM (3. 6-5. 3%), B A (1-5%) and M^A (< 1

Influence of commensal microorganisms on Clostridium botulinum type E.

Creator:: Patrick, Lui-sun Kwan
Abstract:: Achromobacter A43 produced a compound inhibitory to the outgrowth of Clostridium botulinum type E spores. The inhibitor could be produced in various laboratory media and the outgrowth of germinated spores was completely inhibited by 1/10th dilution of the A43 spent medium. Germination was not affected. The spores lost refractility in...
Resource Type:: Masters Thesis
Full Text:: . 2. Passes through molecular weight cut off 1,000 filter. 3. Active fraction in m. w. 800 ~ 1

Microorganisms isolated from sand filtered bay water and the proteolytic activity of a flavobacterium isolate

Creator:: Canhos, Vanderlei Perez
Resource Type:: Dissertation
Full Text:: . Lee for his guidance; to Dr. Wolfgang Reichardt for his many helpful suggestions; to Dr. Morris W

Alteration of certain physiological and biochemical parameters in livers of rainbow trout fed methyl sterculate

Creator:: Struthers, Barbara Oft
Abstract:: The cyclopropene fatty acids, sterculic and malvalic, occur naturally in a major food lipid, cottonseed oil, and have been implicated in several physiological disorders. Rainbow trout in this study were fed semipurified diets containing 200 or 300 ppm methyl sterculate, and the effects on hepatic lipid and glycogen levels, lipid...
Resource Type:: Dissertation
Full Text:: Oft Struthers ACKNOWLEDGMENTS 1 wish to thank Dr. Donald J. Lee for his guidance and for many

Interaction between paralytic shellfish poison and clam melanin and protein

Creator:: Price, Robert J.
Abstract:: Interactions between paralytic shellfish poison (PSP) and components of the butter clam (Saxidomus giganteus) were studied to determine which component was involved in the binding and retention of PSP by the butter clam, and to characterize the nature and strength of the interaction. A simple and accurate assay for PSP...
Resource Type:: Dissertation
Full Text:: Abstract approved: ■#T. S. Lee y^ Interactions between paralytic shellfish poison (PSP) and

ScholarsArchive@OSU

Inhibition of Escherichia coli trimethylamine-N-oxide reductase by food preservatives

Characterization of Arthrobacter species isolated from marine and seafood sources

Nutritional and biochemical characterization of Moraxella species isolated from fishery sources

Physicochemical Properties of Frozen Fish Muscle as Affected by Trimethylamine-N-oxide demethylase (TMAOase)

Heterotrophic bacteria associated with a feed algae for oyster larvae

Aflatoxin B₁ metabolism by rainbow trout (Salmo gairdneri)

Influence of commensal microorganisms on Clostridium botulinum type E.

Microorganisms isolated from sand filtered bay water and the proteolytic activity of a flavobacterium isolate

Alteration of certain physiological and biochemical parameters in livers of rainbow trout fed methyl sterculate

Interaction between paralytic shellfish poison and clam melanin and protein

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