High Pressure Carbon Dioxide Decreases the Heat Tolerance of the Bacterial Spores

Taisuke WATANABE; Soichi FURUKAWA; Takahisa TAI; Junichi HIRATA; Naoki NARISAWA; Hirokazu OGIHARA; Makari YAMASAKI

doi:10.3136/fstr.9.342

Notes

High Pressure Carbon Dioxide Decreases the Heat Tolerance of the Bacterial Spores

Taisuke WATANABE, Soichi FURUKAWA, Takahisa TAI, Junichi HIRATA, Naoki NARISAWA, Hirokazu OGIHARA, Makari YAMASAKI

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Keywords: carbon dioxide, heat, bacterial spore, sterilization, inactivation

JOURNAL FREE ACCESS

2003 Volume 9 Issue 4 Pages 342-344

DOI https://doi.org/10.3136/fstr.9.342

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Abstract

Effect of high pressure carbon dioxide treatment (35°C, 6.5 MPa) (HPCT) on the heat tolerance of bacterial spores was investigated. Spores of Bacillus coagulans and B. licheniformis were subjected to HPCT following heat treatment (80, 85 and 90°C for 30 min) (HT). Spores of both types were sterilized completely in 30 min-90°C HT after HPCT. These results indicated that HPCT greatly decreased the heat resistance of spores.

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