Index Catalog // ScholarsArchive@OSU

Structural analysis of thermally inactivated nisin

Creator:: Musafija-Jeknic, Tamara
Abstract:: Nisin, an antimicrobial peptide used in food preservation was evaluated for thermal stability. Nisin retained antimicrobial activity after having been heated at 121°C for seven hours. Anhydrous nisin and concentrated nisin solutions (5-10 mg/ml) were still active after having been heated up to 190°C or 230°C. When exposed to high...
Resource Type:: Masters Thesis
Full Text:: for thermal stability. Nisin retained antimicrobial activity after having been heated at 121°C for

Characterization of an inhibitor ("6S") of infectious pancreatic necrosis virus (IPNV) in normal rainbow trout serum (RTS) and its effects on the virus

Creator:: Park, Kyoung Chul
Abstract:: The characteristics of an inhibitor of infectious pancreatic necrosis virus (IPNV) found in normal rainbow trout serum (RTS) were studied. The serum inhibitor had a molecular weight of approximately 150 kDa and was dependent on divalent cations, either Ca²⁺ or Mg²⁺. It was stable at temperatures up to 50°C and...
Resource Type:: Dissertation
Full Text:: direction of Dr. Paul Reno in his laboratory at the Coastal Oregon Marine Experimental Station, Hatfield

Antimicrobial resistance and plasmid properties of Leuconostoc and group N Streptococcus

Creator:: Orberg, Paulo K.
Abstract:: A method for rapid isolation of plasmid DNA from group N streptococci was developed. Chief advantages of the method were simplicity, the utilization of microliter quantities of reagents, and the obtainment of preparations highly enriched for covalently closed circular plasmid DNA. The method was also applied to over 15 Leuconostoc...
Resource Type:: Dissertation
Full Text:: , and the obtainment of preparations highly enriched for covalently closed circular plasmid DNA. The

Photooxidative degradation of annual rye-grass straw to substrates enhancing rhodotorula mucilaginosa growth

Creator:: Park, Jerry Eugene
Abstract:: Annual ryegrass (Lolium multiflorum) is a major seed crop in the Willamette Valley of Oregon. Persistent crop diseases have necessitated annual field burning to protect future crops. This practice, while very effective for disease eradication, produces large quantities of air polluting smoke in the valley and a general wastage of...
Resource Type:: Dissertation
Full Text:: growth in the production of single cell protein. Ryegrass straw hydrolysed with 3% sulfuric acid at 121

Isolation and characteristics of the DNA from nuclear polyhedrosis virus

Creator:: Carnegie, John William
Abstract:: The genome of the nuclear polyhedrosis virus which infects the larvae of the tussock moth, the lepidopteran, Hemerocampa pseudotsugata, was isolated, identified as deoxyribonucleic acid, and characterized in terms of its physical and biological properties. An isolation procedure for the viral DNA was established which consisted of the following steps:...
Resource Type:: Dissertation
Full Text:: exist, at times, as a circular molecule by ethidium bromide- cesium chloride density gradient analysis

What is killing the corals? Viral and bacterial interrogations using metagenomics and microscopy

Creator:: Soffer, Nitzan
Abstract:: Corals have multiple roles in maintaining ocean health and are some of the world’s most diverse ecosystems. The coral animal is host to a multitude of taxa, including symbiotic dinoflagellate algae, fungi, bacteria, protists, and viruses. Environmental stressors and disease agents can perturb the delicate balance of the coral host...
Resource Type:: Dissertation
Full Text:: seawater (n=2). After comparing the viromes, I found that small circular REP- encoding eukaryotic ssDNA

Factors related to resisitance of bacteria to quaternary ammonium germicides

Creator:: Wang, Wei-sheng
Abstract:: This study was carried out to compare the effects of a quaternary ammonium compound (QAC) upon strains of Pseudomonas aeruginosa which were either sensitive or resistant to the germicide. The cationic QAC used was alkyldimethylbenzylammonium chloride. The resistant types were isolated from the sensitive population by selection of mutants which...
Resource Type:: Masters Thesis
Full Text:: number of review articles concerning QACs have been published (43, p. 569 -579; 35, p. 119 -121; 46, p

Final report : environmental stresses and skeletal deformities in fish from the Willamette River, Oregon, USA

Creator:: Villeneuve, Daniel L., Curtis, Lawrence R., Jenkins, Jeffrey J., Warner, Kara E., Tilton, Fred A., Kent, Michael L., Watral, Virginia G., Cunningham, Michael E., Markle, Douglas F., Sethajintanin, Doolalai, Krissanakriangkrai, Oraphin, Johnson, Eugene R., Grove, Robert Allan, Anderson, Kim A., Oregon State University. Department of Microbiology, Oregon State University. Department of Environmental and Molecular Toxicology, Oregon State University. Department of Fisheries and Wildlife, and Institute for Natural Resources
Abstract:: The Willamette River, one of only 14 American Heritage Rivers, flows through the most densely populated and agriculturally productive region of Oregon. Previous biological monitoring of Willamette River fish detected elevated frequencies of skeletal deformities in fish from certain areas of the lower (NP [NP], rivermile [RM] 26-55) and middle...
Resource Type:: Technical Report
Full Text:: ’; [2] N 45o 27.37’, W 122o 39.47’). The NP 1 (RM 47) sampling station was about 25-30 feet from the

Bacteriophage-host interactions in lactic streptococci : lysogeny, phage inhibition and phage-insensitive mutants

Creator:: Huggins, Alan Roy
Resource Type:: Dissertation
Full Text:: - , Technical Paper no. 4351, Oregon Agricultural Experi- ment Station. 184 logically. Preliminary evidence on

Studies to improve lactic acid bacterial starter cultures

Creator:: Khosravi, Lewa
Abstract:: Three commercial sausage starter cultures were grown in an internal-pH-controlled medium (PHASE 4) and in a soluble phosphate-buffered medium. The cultures were tested by comparing viable counts before and after freezing at -40 C or freeze-drying and subsequent storage for 3 months in the frozen or dried state. Strains varied...
Resource Type:: Dissertation
Full Text:: and mutant strains grown in nonfat milk containing different levels of added phosphates 121 2.13

ScholarsArchive@OSU

Structural analysis of thermally inactivated nisin

Characterization of an inhibitor ("6S") of infectious pancreatic necrosis virus (IPNV) in normal rainbow trout serum (RTS) and its effects on the virus

Antimicrobial resistance and plasmid properties of Leuconostoc and group N Streptococcus

Photooxidative degradation of annual rye-grass straw to substrates enhancing rhodotorula mucilaginosa growth

Isolation and characteristics of the DNA from nuclear polyhedrosis virus

What is killing the corals? Viral and bacterial interrogations using metagenomics and microscopy

Factors related to resisitance of bacteria to quaternary ammonium germicides

Final report : environmental stresses and skeletal deformities in fish from the Willamette River, Oregon, USA

Bacteriophage-host interactions in lactic streptococci : lysogeny, phage inhibition and phage-insensitive mutants

Studies to improve lactic acid bacterial starter cultures

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