Effect of repeated pressure treatment on breakdown of clumps of bacterial spores

Abstract

The effects of repeated pressure treatment (RP treatment) and continuous pressure treatment (CP treatment) at 25°C, 400 MPa for 30 min on the breakdown of spore clumps were investigated and RP treatment was found to be effective in breaking the clumps as the ratio of clumps decreased with increase in decompression time. It was deduced that this breakdown effect was one reason for the higher sterilization effect of RP treatment than CP treatment.