An evaluation of the rate constants for the adsorption of the defective phage PBS Z to Bacillus subtilis

1982 ◽  
Vol 48 (2) ◽  
pp. 183-188 ◽  
Author(s):  
H. Y. Steensma
Keyword(s):  
Bacillus Subtilis ◽  
Rate Constants ◽  
Defective Phage

Sporicidal Kinetics of Bacillus subtilis Spores by Heated Scallop Shell Powder

2003 ◽  
Vol 66 (8) ◽  
pp. 1482-1485 ◽  
Author(s):  
JUN SAWAI ◽  
HIROYUKI MIYOSHI ◽  
HIROMITSU KOJIMA
Keyword(s):  
Activation Energy ◽  
Bacillus Subtilis ◽  
Rate Constants ◽  
Death Rate ◽  
Inverse Relationship ◽  
Scallop Shell ◽  
Powder Concentration ◽  
Apparent Death ◽  
Kinetics Of ◽  
Shell Powder

Scallop shell powder heated at 1,000°C for 1 h exhibited sporicidal action against Bacillus subtilis spores. The sporicidal kinetics of this action were analyzed with the use of a nonlogarithmic model. Apparent death rate constants (k) were obtained under various conditions. The value of k increased with powder concentration but became constant beyond the concentration representing the solubility of Ca(OH)2. A linear inverse relationship between k and temperature was found, and from this relationship the activation energy required for the death of B. subtilis spores in the heated shell powder slurry could be determined.

The sterilizing effect againstBacillus subtilisspores of hydrogen peroxide at different temperatures and concentrations

1968 ◽  
Vol 35 (3) ◽  
pp. 423-428 ◽  
Author(s):  
P. Swartling ◽  
B. Lindgren
Keyword(s):  
Hydrogen Peroxide ◽  
Bacillus Subtilis ◽  
Rate Constant ◽  
Rate Constants ◽  
Death Rate ◽  
Survival Curves ◽  
First Order ◽  
Commercial Practice ◽  
Different Temperatures ◽  
Experimental Findings

SummaryAn investigation was made of the death-rate ofBacillus subtilisspores in suspension in hydrogen peroxide concentrations of 10, 15 and 20% at 25, 50, 60, 70 and 80°C. Average logarithmic survival curves were plotted against normal time and death-rate constants andQ10values were calculated from the graphically determined decimal reduction times. This treatment of the experimental findings was found to be warranted in the temperature range 60–80°C. The first-order death-rate constant was ∽ 0·1 s−1for 10% hydrogen peroxide solution at 60°C and theQ10was about 1·6. Increases in the concentration from 10 to 15% and from 15 to 20% each gave an increase of about 50% in the rate constant. The application of these data to commercial practice is discussed.

Properties of the defective phage of Bacillus subtilis

1968 ◽  
Vol 34 (3) ◽  
pp. 413-428 ◽  
Author(s):  
Koji Okamoto ◽  
J.A. Mudd ◽  
J. Mangan ◽  
W.M. Huang ◽  
T.V. Subbaiah ◽  
...  
Keyword(s):  
Bacillus Subtilis ◽  
Defective Phage

Use of Antibody to aid Visualization of Protein at the Termini of Bacteriophage Ø29 DNA

1980 ◽  
Vol 38 ◽  
pp. 540-541
Author(s):  
Dwight Anderson ◽  
Charlene Peterson ◽  
Gursaran Notani ◽  
Bernard Reilly
Keyword(s):  
Electron Microscopy ◽  
Bacillus Subtilis ◽  
Dna Synthesis ◽  
Restriction Endonuclease ◽  
Protein Complex ◽  
Protein Product ◽  
Viral Dna ◽  
Small Proteins ◽  
Antibody Labeling ◽  
Subtilis Bacteriophage

The protein product of cistron 3 of Bacillus subtilis bacteriophage Ø29 is essential for viral DNA synthesis and is covalently bound to the 5’-termini of the Ø29 DNA. When the DNA-protein complex is cleaved with a restriction endonuclease, the protein is bound to the two terminal fragments. The 28,000 dalton protein can be visualized by electron microscopy as a small dot and often is seen only when two ends are in apposition as in multimers or in glutaraldehyde-fixed aggregates. We sought to improve the visibility of these small proteins by use of antibody labeling.

Antibacterial activity of Celastrol against Bacillus subtilis

Planta Medica ◽  
2008 ◽  
Vol 74 (09) ◽  
Author(s):  
N Padilla-Montaño ◽  
IL Bazzocchi ◽  
L Moujir
Keyword(s):  
Antibacterial Activity ◽  
Bacillus Subtilis
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