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Studies on diacetyl production by Streptococcus diacetilactis matuszewski et al

Creator:: Seitz, Eugene Walter
Resource Type:: Dissertation
Full Text:: presence of citritase in cell -free ex- tracts of S. diacetilactis. Harvey and Collins (31, p. 954 -959

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:: to vary widely, However, microorganisms which were taxonomically related were found by Lee, Wahl

Lactic streptococci: growth characteristics and plasmid profiles of drug- and bacteriophage-insensitive mutants

Creator:: Wulf, John J.
Abstract:: Fast acid-producing streptomycin-resistant mutants for several strains of lactic streptococci currently used in commercial Cheddar cheese manufacture were isolated. Their isolation involved use of a recently developed differential plating medium that allows identification of fast acid-producing colonies. Both parents and mutants were characterized with regard to growth, acid production, proteolytic...
Resource Type:: Masters Thesis
Full Text:: (26.7°C). Also, Lee and Collins (12) suggest that difference in generation time would be less of a

Development of internally pH-controlled bulk starter media for the propagation of lactic acid bacteria

Creator:: Willrett, Douglas L.
Resource Type:: Dissertation

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:: in the genus Streptococcus. Microbiol. Rev. 45: 409-436. 6. Collins, J., and R. H. Pritchard. 1973

Preservation studies on internal-pH-control-grown yogurt starters

Creator:: Matalon, Marcelo E.
Resource Type:: Masters Thesis
Full Text:: medium has been developed by Lee and co-workers (68). This medium contains sucrose, which 26 most L

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

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

Creator:: Wyckoff, Herbert Allen, 1961-
Resource Type:: Dissertation
Full Text:: previously applied to other groups of bacteria. 4 Literature Cited 1. Cooper, R. K., and E. B. Collins

Roles of yeast and lactic acid bacteria in malolactic fermentation of wines : a chemical and sensory study

Creator:: Avedovech, Richard M.
Abstract:: The purposeful induction of malolactic fermentation (MLF) in wines such as Pinot Noir and Chardonnay is an established commercial wine making practice in Oregon. This induction is not always successful, especially with white wines, such as Chardonnay. A study was initiated to examine the compatibility of yeasts commonly used in...
Resource Type:: Dissertation

Growth, physiological characteristics and plasmid profiles of Bifidobacterium species

Creator:: Cheng, Ronshan
Abstract:: The fecal flora of healthy bottle or breast-fed infants was examined for the presence of Bifidobacterium. Identification was based on the presence of fructose-6-phosphate phosphoketolase, which is found only in these bacteria. No bifidobacteria were recovered from bottle-fed infants. However, bifidobacteria were readily isolated from 15 day to 3 month...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Studies on diacetyl production by Streptococcus diacetilactis matuszewski et al

Genetic homology and exchange in lactic acid streptococci

Lactic streptococci: growth characteristics and plasmid profiles of drug- and bacteriophage-insensitive mutants

Development of internally pH-controlled bulk starter media for the propagation of lactic acid bacteria

Antimicrobial resistance and plasmid properties of Leuconostoc and group N Streptococcus

Preservation studies on internal-pH-control-grown yogurt starters

Studies to improve lactic acid bacterial starter cultures

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

Roles of yeast and lactic acid bacteria in malolactic fermentation of wines : a chemical and sensory study

Growth, physiological characteristics and plasmid profiles of Bifidobacterium species

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