The effects of temperature and concentration of dissolved CO2 on the death kinetics of Saccharomyces cerevisiae were demonstrated. Several combinations of pressures (4, 6, 8, 10 MPa) and temperatures (30, 34, 36, 38°C) were used. The D-values obtained were 0.14 min at 8 MPa and 38°C, and 0.15 min at 10 MPa and 36°C. The log D-values were related linearly to the treatment temperature and to the dissolved CO2 concentration. The thermal resistance constant was 9.5°C, and the CO2 resistance constant was 7.2 γ. This work enables the estimation of the D-values at any temperature and any CO2 concentration. Non-thermal inactivation of microorganisms would be realized by the present technique.
|Number of pages||6|
|Journal||Review of High Pressure Science and Technology/Koatsuryoku No Kagaku To Gijutsu|
|Publication status||Published - Jan 1 2002|
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Condensed Matter Physics