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The isolation of Lactococcus lactis subsp. cremoris from nature with probes for 16S ribosomal RNAs

Creator:: Salama, Maysoon
Resource Type:: Dissertation
Full Text:: : Stephen J. lovannoni William E. Sandine Lactococcus lactis subsp. cremoris is of considerable interest

Development and use of genetic techniques for study of dairy Leuconostoc bacteria

Creator:: Wyckoff, Herbert Allen, 1961-
Resource Type:: Dissertation
Full Text:: Techniques for Study of Dairy Leuconostoc Bacteria Abstract approved William E. Sandine A high frequency

Effect of selected lactic acid bacteria on the growth of food-borne pathogens and spoilage microorganisms in raw milk and milk products

Creator:: Al-Zoreky, Nageb
Abstract:: Several lactic acid bacteria (LAB) of the Lactococcus, Lactobacillus, Leuconostoc and Pediococcus genera were screened for inhibition of food-borne pathogens and spoilage microorganisms in raw milk and dairy products. Listeria monocytogenes was killed by Lactococcus lactis subsp. lactis and Pediococcus pentosaceus due to their production of bacteriocin-type inhibitors. Staphylococcus aureus...
Resource Type:: Dissertation
Full Text:: Spoilage Microorganisms in Raw Milk And Milk Products Abstract Approved: Dr. William E

Control of acid production and β-galactosidase synthesis in lactic streptococci

Creator:: Citti, James Edward
Abstract:: The public health and economic significance of rapid acid production by lactic streptococci in controlled dairy fermentations is well known. However, the fast acid-producing characteristic of these organisms is not stable, and cultures of fast organisms have been shown to contain slow cells. These studies were carried out to characterize...
Resource Type:: Dissertation
Full Text:: in lactic streptococci AN ABSTRACT OF THE THESIS OF JAMES EDWARD CITTI for the Ph. D. in

Development of an internal pH-controlled, phage inhibitory bulk starter medium for the propagation of thermophilic lactic acid bacteria used in the production of mozzarella cheese

Creator:: Whitehead, William E.
Resource Type:: Dissertation
Full Text:: mozzarella cheese AN ABSTRACT OF THE THESIS OF William E. Whitehead for the degree of Doctor of Philosophy

Conjugal transfer of plasmid genes between lactic Streptococcus and Leuconostoc starter bacteria

Creator:: Tsai, Huai-jen
Abstract:: Mutants of Streptococcus lactis 7962 with various combinations of plasmid molecular masses were screened for nisin production. Nisin was produced by both wild type and mutants that contained a 17.5 Md plasmid, which was usually obscured by the chromosomal fragments. No nisin was produced by plasmid-free mutants. Sucrose fermentation and...
Resource Type:: Dissertation
Full Text:: approved: William E. Sandine Mutants of Streptococcus lactis 7962 with various combinations of plasmid

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:: : William E. Sandine A method for rapid isolation of plasmid DNA from group N streptococci was developed

Genetic homology and exchange in lactic acid streptococci

Creator:: Knittel, Martin Dean
Abstract:: The dairy industry relies primarily on consistent acid production by the lactic streptococci for the manufacture of certain cheeses and fermented dairy products. Variation in these cultures due to genetic exchange has not been thoroughly investigated. This study was undertaken to determine if genetic homology exists within the lactic group,...
Resource Type:: Dissertation
Full Text:: Ph. D. in Microbiology (Name) Date thesis is presented (Degree) (Major) r414(1 -)1rq (Ps

Pathways and enzymes involved in glucose catabolism by lactic streptococci

Creator:: Nandan, Rajiva
Abstract:: The enzymes and pathways involved in the catabolism of glucose by several strains of Streptococcus diacetilactis, Streptococcus cremoris, and Streptococcus lactis, commonly called the lactic streptococci, were studied. The presence of aldolase, triosephosphate isomerase and alcohol dehydrogenase in these organisms provided evidence for the operation of the Embden-Meyerhof-Parnas (EMP) pathway...
Resource Type:: Dissertation
Full Text:: IN GLUCOSE CATABOLISM BY LACTIC STREPTOCOCCI Abstract approved: Dr. William E. Sandine The

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:: approved: Redacted for privacy William E. Sandine Three commercial sausage starter cultures were grown

ScholarsArchive@OSU

The isolation of Lactococcus lactis subsp. cremoris from nature with probes for 16S ribosomal RNAs

Development and use of genetic techniques for study of dairy Leuconostoc bacteria

Effect of selected lactic acid bacteria on the growth of food-borne pathogens and spoilage microorganisms in raw milk and milk products

Control of acid production and β-galactosidase synthesis in lactic streptococci

Development of an internal pH-controlled, phage inhibitory bulk starter medium for the propagation of thermophilic lactic acid bacteria used in the production of mozzarella cheese

Conjugal transfer of plasmid genes between lactic Streptococcus and Leuconostoc starter bacteria

Antimicrobial resistance and plasmid properties of Leuconostoc and group N Streptococcus

Genetic homology and exchange in lactic acid streptococci

Pathways and enzymes involved in glucose catabolism by lactic streptococci

Studies to improve lactic acid bacterial starter cultures

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