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KMID : 0380619800120040272
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Korean Journal of Food Science and Technology
1980 Volume.12 No. 4 p.272 ~ p.277
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The Destruction of Bacterial Spores Upon Compressional Pressure
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김영만/Kim, Young Man
이철호/이정치/정필근/Lee, Cherl Ho/Lee, Jung Chi/Jung, Pil Keun
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Abstract
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The tolerance of useful bacterial spores to the conditions of tablet making, specifically, the destruction of bacterial spores upon compressional pressure was investigated.
The damage of bacterial spores occurred mainly during the tabletting. The bacterial spores obeyed a logarithmic destruction rate upon compressional pressure. The spore destruction rate was dependent upon the strains of microorganism. The Decimal Reduction Pressure, designated as P-value, were 2.9 ton/㎠, 2.6 ton/㎠ and 2.1 ton/㎠ for the spores of Bacillus subtilis, Bacilus coagulans and Clostridium butyricum, respectively, and 1.7 ton/㎠ for the vegetative cell of Streptococcus faecalis.
The spore destruction upon compressional pressure was influenced by the type of filler. The P-value of the spore of B. coagulans was 2.8 ton/㎠ in the lactose filler, but 2.0 ton/㎠ in the starch filler. The number of viable spores was inversely proportional to the hardness and density of tablet, in case that the same type of filler was used. The starch filler, which resulted in the lower hardness and lower density of tablet, caused higher spore destruction rate compared with the lactose filler.
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