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...
Factors influencing diacetyl production by the aroma bacteria
Leuconostoc citrovorum and Streptococcus diacetilactis were investigated.
When grown in association with lactic streptococci, L. citrovorum
strain 91404 decreased in cell numbers from 10⁸ to 10⁶ over
two weeks of daily subculturing in sterile non-fat milk incubated at
21°C. The ability to...