Inactivation of Bacillus stearothermophilus and Bacillus coagulans spores as indicators of sterilization by reciprocal pressurization

Soichi Furukawa, Koji Saita, Tatuo Kato, Mitsuya Shimoda, Isao Hayakawa

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5 Citations (Scopus)


The effects of the reciprocal pressurization (six reciprocal cycles of 5 min pressurization) (RP) and the continuous pressurization (30-min pressurization) (CP) on the inactivation of spores of Bacillus coagulans and Bacillus stearothermophilus were studied. The combined parameters used were hydrostatic pressure (100, 200, 300 and 400 MPa), temperature (45, 55, 65 and 75°C) and total pressurization period (30min). RP was more effective than CP on inactivating bacterial spores. However, the effectiveness of RP on increasing the inactivation power was observed in hydrostatic pressure over 200 MPa.

Original languageEnglish
Pages (from-to)183-188
Number of pages6
JournalJournal of the Faculty of Agriculture, Kyushu University
Issue number1
Publication statusPublished - Nov 2000

All Science Journal Classification (ASJC) codes

  • Biotechnology
  • Agronomy and Crop Science

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