Kvasny Prum. 1978; 24(5): 99-102 | DOI: 10.18832/kp1978015

Theoretical Fundamentals of an Instrument for Measuring Pasteurization Effects.Peer-reviewed article

J. ŠAVEL

The article deals with the conditions, under which a process or reaction depending on temperature can be observed and evaluated by observing and appropriately selected quantity, which is easy to follow and depends also  on the temperature. Activation  energies of the studied and reference reactions must be roughly the same. The author introduces  and defines special units indicating the stage of the reaction or process against different temperatures and time intervals. Pasteurization units are taken as an example. The calculated  activation energy of pasteurization is E_p = 287,6 kJ mol^-1. For evaluation of keeping qualities and storage conditions the author introduces the so-called deterioration  units (JK). The deterioration rate of beer (RK) expressed in such units is RK = 1,01718 ^(t-20) ( t is the temperature in centigrade degrees ). Limits in which the instrument can be used to study the changes depending on temperature and errors of measurements are briefly discussed in the closing parapraphs.
(In Czech, English summary only)

Keywords: brewing industry, instrument, pasteurization effect

Published: May 1, 1978