MATHEMATICAL-MODEL FOR THE COMBINED EFFECT OF TEMPERATURE AND PH ON THE THERMAL-RESISTANCE OF BACILLUS-STEAROTHERMOPHILUS AND CLOSTRIDIUM-SPOROGENES SPORES

Authors
FERNANDEZ PS OCIO MJ RODRIGO F RODRIGO M MARTINEZ A
Citation
Ps. Fernandez et al., MATHEMATICAL-MODEL FOR THE COMBINED EFFECT OF TEMPERATURE AND PH ON THE THERMAL-RESISTANCE OF BACILLUS-STEAROTHERMOPHILUS AND CLOSTRIDIUM-SPOROGENES SPORES, International journal of food microbiology, 32(1-2), 1996, pp. 225-233
Citations number
21
Categorie Soggetti
Food Science & Tenology",Microbiology
Journal title
International journal of food microbiology → ACNP
ISSN journal
01681605
Volume
32
Issue
1-2
Year of publication
1996
Pages
225 - 233
Database
ISI
SICI code
0168-1605(1996)32:1-2<225:MFTCEO>2.0.ZU;2-H
Abstract
Two mathematical models have been studied to establish the relationshi p between the pH, treatment temperature and thermal destruction consta nt (k) of Bacillus stearothermophilus and Clostridium sporogenes spore s. The study was carried out by heating the spores in mushroom extract acidified with two different acidulants (citric acid and glucono-delt a-lactone). Among the models studied, the one that best described the inactivation was a second order polynomial equation, the precision of which depended on the microorganism studied.