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Quantification of bacteriocin gene expression in Carnobacterium maltaromaticum ATCC PTA-5313
DownloadFall 2014
Carnobacterium maltaromaticum ATCC PTA-5313, which produces bacteriocins carnocyclin A, piscicolin 126 and carnobacteriocin BM1, has been approved for use on meat products to control the growth of Listeria monocytogenes. This combination of bacteriocins is very effective as a biopreservative. It...
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Spring 2011
Several obstacles to widespread use of bacteriocins in food have been identified, including lack of specific, rapid quantitation methods, and little data on their efficacy in food systems. The first objective of this study was to develop a specific, rapid quantitation method for bacteriocins...
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Fall 2014
Paenibacillus polymyxa NRRL B-30509, Paenibacillus terrae NRRL B-30644 and P. polymyxa NRRL B-30507 were found to produce several bacteriocins and non-ribosomal peptides. All three strains produce tridecaptins, non-ribosomal lipopeptides antimicrobially active against food pathogen Campylobacter...
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Fall 2012
Thuricin CD, a two-component bacteriocin produced by Bacillus thuringiensis DPC 6431, exhibits potent activity against the hospital superbug Clostridium difficile ribotype O27. The two peptides (Trn-α and Trn-β) that constitute thuricin CD operate synergistically to kill sensitive bacteria at...
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Structural Studies of Peptides that Influence the Pathogenicity of Bacterial Infections, and Investigation of Structure-Activity-Relationships of Antimicrobial Peptides with Application to Cancer Therapy.
DownloadFall 2017
Enterocin 7 is a two-component, leaderless bacteriocin comprised of an A and B peptide and produced by Enterococcus faecalis 710C. The secondary structure of enterocin 7B was investigated through circular dichroism. A high degree of α-helicity was discovered by circular dichroism, regardless of...
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Spring 2018
Acidocin B (AcdB), a bacteriocin from Lactobacillus acidophilus M46 that was initially reported to be a linear peptide, was purified and shown to be circular based on MALDI-TOF MS and MS/MS sequencing. MS analysis further revealed that AcdB is comprised of 58 amino acid residues, instead of 59...
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Study of Non-Covalent Protein-Carbohydrate Interactions by Nanoelectrospray Ionization Mass Spectrometry and Surface Plasmon Resonance
DownloadFall 2015
This thesis describes the application of electrospray ionization mass spectrometry (ESI-MS) techniques to identify and quantify antibody-antigen interactions in vitro. Also potential application of nanodiscs (ND) as membrane model in ESI-MS and surface plasmon resonance (SPR) spectroscopy has...
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Fall 2016
“Blown-pack” spoilage of beef by psychrotrophic Clostridium spp. occurs sporadically and resistance of the endospores to most interventions makes them very difficult to control. Current interventions used to control spoilage and pathogenic bacteria, such as acid washes and heat treatments, do...