Occurrence of Bacillus subtilis with High Heat Resistance
1967
Put, Henrieutte M.C. | Aalbebsberg, W. IJ.
The heat resistance of spores of Bacillus subtilis strain Bac 1-11, isolated from processed fried rice, and strain Bac 1-12, isolated from processed evaporated milk, has been determined. The calculated D₁₁₂.₅ of spores of Bac 1-11, in M/40 phosphate buffer (pH 6.8) and in fried rice (pH 6.4) was 4.2 min and 4.5 min (z= 18 and 20 resp.), respectively. The calculated D₁₁₂.₅ of spores of Bac 1-12, in M/40 phosphate buffer (pH 6.8) and in evaporated milk (pH 6.4) was 5.0 min and 6.7 min (z= 18 and 23 resp.), respectively. The extrapolated D₁₂₁ values were 0.57, 0.76, 0.71 and 1.45 min, respectively.
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