Kvasny Prum. 1977; 23(12): 270-274 | DOI: 10.18832/kp1977043

Killing of Saccharomysec carlsbergensis in linear temperature field.Peer-reviewed article

J. ŠAVEL, M. PROKOPOVÁ

The article deals with the atrophy of Saccharomyces carlsbergensis in a linear temperature field. Yeast in a square agar plate with initial concentration of 40 to 120 cells per 1cm² was exposed for 1 hour to a linear temperature field as high as 40-46 °C. The results of experiments confirm the validity of the first-order kinetic equation of yeast death in the mentioned temperature range. For the quantities in the equation K [ t ] = Ke^βt  expressing the letal rate against temperature the following values have been ascertained: β = 0,38  to 0,68 °C^-1 ; K = 2,16 . 10^-9  - 9,63 .10^-16 min ^-1. The authors present formulae for calculating the letal rate of microorganisms in linear temperature fields.
(In Czech, English summary only)

Keywords: Saccharomysec carlsbergensis, killing, linear temperature field

Published: December 1, 1977