Distribution of heat resistance parameteric values of Bacillus coagulans spores.
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چکیده
منابع مشابه
Heat shock affects permeability and resistance of Bacillus stearothermophilus spores.
Heat shock of dormant spores of Bacillus stearothermophilus ATCC 7953 at 100 or 80 degrees C for short times, the so-called activation or breaking of dormancy, was investigated by separating the resulting spores by buoyant density centrifugation into a band at 1.240 g/ml that was distinct from another band at 1.340 g/ml, the same density as the original spores. The proportion of spores at 1.240...
متن کاملHeat Resistance and Population Stability of Lyophilized Bacillus subtilis Spores.
Bacillus subtilis 5230 spores were lyophilized in 0.067 M phosphate buffer and stored at 2 to 8 degrees C for 9 to 27 months. The lyophilized spores were reconstituted with buffer or 0.9% saline, and the heat resistance was determined in a thermoresistometer. Lyophilization had no effect on the heat resistance of the spores but did result in a slight decrease in population (</=0.3-logarithm red...
متن کاملThermal inactivation kinetics of Bacillus coagulans spores in tomato juice.
The thermal characteristics of the spores and vegetative cells of three strains of Bacillus coagulans (ATCC 8038, ATCC 7050, and 185A) in tomato juice were evaluated. B. coagulans ATCC 8038 was chosen as the target microorganism for thermal processing of tomato products due to its spores having the highest thermal resistance among the three strains. The thermal inactivation kinetics of B. coag...
متن کاملSuperdormant spores of Bacillus species have elevated wet-heat resistance and temperature requirements for heat activation.
Purified superdormant spores of Bacillus cereus, B. megaterium, and B. subtilis isolated after optimal heat activation of dormant spores and subsequent germination with inosine, d-glucose, or l-valine, respectively, germinate very poorly with the original germinants used to remove dormant spores from spore populations, thus allowing isolation of the superdormant spores, and even with alternate ...
متن کاملHeat shock proteins do not influence wet heat resistance of Bacillus subtilis spores.
Spores of Bacillus subtilis are significantly more resistant to wet heat than are their vegetative cell counterparts. Analysis of the effects of mutations in and the expression of fusions of a coding gene for a thermostable beta-galactosidase to a number of heat shock genes has shown that heat shock proteins play no significant role in the wet heat resistance of B. subtilis spores.
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ژورنال
عنوان ژورنال: NIPPON SHOKUHIN KOGYO GAKKAISHI
سال: 1991
ISSN: 0029-0394
DOI: 10.3136/nskkk1962.38.211