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:: widely distributed in populations of Lactococcus lactis (de Vos et al., 1993). 1 Dairy Lactococci

Characterization of novel exopolysaccharide producing lactic acid bacteria

Creator:: Garcia, Roberto A., III
Abstract:: Lactic Acid Bacteria (LAB), an important group of organisms in modern food production, are known to secrete a unique compound called exopolysaccharide (EPS). EPS is economically important because it enhances functional properties in food and may confer beneficial health effects to consumers. Novel strains of Lactococcus lactis, Streptococcus thermophilus, and...
Resource Type:: Masters Thesis

Immune response and protection against Streptococcus pyogenes after vaccination with Lactococcus lactis that expresses conserved region of M6 protein

Creator:: Mannam, Praveen
Abstract:: Most pathogens gain access to their host through mucosal surfaces. It is therefore desirable to develop mucosal vaccines that elicit an immune response to prevent this crucial first step in infection. Current mucosal vaccines are live attenuated strains of pathogens. More recent efforts have focused on the use of recombinant...
Resource Type:: Masters Thesis

Immune responses of juvenile chinook salmon (Oncorhynchus tshawytscha) to p,p-̓DDE and tributyltin

Creator:: Misumi, Ichiro
Abstract:: In this thesis, we examined the effects of the exposures to anthropogenic pollutants on the fish, primarily juvenile chinook salmon, immune system using newly and recently developed immune assays. In addition, we developed a new assay for measuring immunocompetence of fish. In the first chapter, the Alamar Blue assay was...
Resource Type:: Masters Thesis
Full Text:: fluorometrically. While Alamar Blue has been used to assess mammalian lymphocytes (Ahmed et al., 1994; de Fries

Characterizing the Accuracy of Phylogenetic Analyses that Leverage 16S rRNA Sequencing Data

Creator:: Humphreys, Ian R.
Abstract:: Investigations of 16S rRNA gene sequences hallmark modern microbiology. These sequences provide culture-independent insight into the abundance and distribution of microbiota and serve as a principle resource through which microbial community diversity is measured. Consequently, researchers rely on 16S gene sequences to test hypotheses rooted in ecology, evolution, and disease....
Resource Type:: Masters Thesis
Full Text:: al. 2012; Salonen et al. 2010; de Boer et al. 2009; Smith 2011). While there are a multitude of

Functional and structural characterization of phage infection protein (Pip) in Lactococcus lactis

Creator:: Ngo, Hang
Abstract:: This thesis describes an analysis of the structure/function relationship of the phage infection protein (Pip) in Lactococcus lactis. Pip is a protein required for phage infection of L. lactis exclusively by phage c2 species. Pip, which shares no significant homology to previously studied proteins, contains 6 hydrophobic regions; one residing...
Resource Type:: Masters Thesis

Development of mucosal vaccines for avian influenza A virus composed of recombinant Lactococcus lactis and Streptococcus gordonii

Creator:: Reese, Kaleb A.
Abstract:: Novel mucosal vaccines (LL-M2e, LL-HAe, SG-HAe) were constructed from live, non-pathogenic Lactococcus lactis or Streptococcus gordonii that express conserved regions of HA or M2 antigens from avian influenza virus (AIV) A. All three vaccines evoked antigen-specific serum immunoglobulin G (IgG) responses in vaccinated chickens. The addition of the adjuvant cholera...
Resource Type:: Masters Thesis
Full Text:: where I am, but they have been sincerely exceptional friends. They also knew how to help me de-stress

Disturbances in a marine bacterioplankton system drive community assembly towards niche-based processes

Creator:: Vergin, Kevin L.
Abstract:: Over 100 monthly bacterioplankton DNA samples, from each of the surface and 200 m depths at the Bermuda Atlantic Time-series Study (BATS) site, were analyzed for community assembly processes. Correlation networks, filtered for potential autocorrelation artifacts, were constructed for each depth. Network characteristics for the two depths were remarkably similar...
Resource Type:: Masters Thesis
Full Text:: phylogenetic units of interest, such as species, is an elusive goal (Vos 2011), so it is difficult to measure

Characterization of dairy leuconostocs and method to use Leuconostoc mesenteroides ssp. cremoris to improve milk fermentations

Creator:: Levata-Jovanovic, Marina
Abstract:: Dairy leuconostocs are frequently used as aroma-producing bacteria in mesophilic cultures used as starters for milk fermentations. Sixty Leuconostoc strains from different culture collections were studied taxonomically for species identification. Based on morphological, physiological and biochemical tests, twenty of these strains were typed as Leuconostoc mesenteroides ssp. cremoris (Leu. cremoris)....
Resource Type:: Masters Thesis
Full Text:: the propagation of leuconostocs are MRS broth (de Man et al.,1960) and Elliker's lactic broth

Growth characteristics of 2,4-dichlorophenoxyacetic acid degrading bacteria recovered from an Oregon soil

Creator:: Phillips, David C.
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Structural analysis of thermally inactivated nisin

Characterization of novel exopolysaccharide producing lactic acid bacteria

Immune response and protection against Streptococcus pyogenes after vaccination with Lactococcus lactis that expresses conserved region of M6 protein

Immune responses of juvenile chinook salmon (Oncorhynchus tshawytscha) to p,p-̓DDE and tributyltin

Characterizing the Accuracy of Phylogenetic Analyses that Leverage 16S rRNA Sequencing Data

Functional and structural characterization of phage infection protein (Pip) in Lactococcus lactis

Development of mucosal vaccines for avian influenza A virus composed of recombinant Lactococcus lactis and Streptococcus gordonii

Disturbances in a marine bacterioplankton system drive community assembly towards niche-based processes

Characterization of dairy leuconostocs and method to use Leuconostoc mesenteroides ssp. cremoris to improve milk fermentations

Growth characteristics of 2,4-dichlorophenoxyacetic acid degrading bacteria recovered from an Oregon soil

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