| Thermal inactivation kinetics of Bacillus stearothermophilus spores using a linear temperature program. | |
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MedLine Citation:
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PMID: 10456754 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A systematic study of the inactivation kinetics of Bacillus stearothermophilus spores was carried out in nonisothermic heating conditions using a linear temperature increase program and analyzing the experimental data by means of a one-step nonlinear regression. The D and z values estimated are close to those obtained in isothermic conditions and estimated by using a two-step model, first D values are calculated, and then in the second step a z value is deduced (D(121 degrees C) = 3.08 and 4.38 min, respectively, and z = 7 and 7.9 degrees C, respectively). No convergence problems were observed when using the one-step nonlinear regression proposed. The results indicated that the methodology applied in this study can be used to obtain kinetic data for bacterial spores, which could mean a significant reduction in the amount of experimental work employed to generate these data. |
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Authors:
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S Leontidis; A Fernández; C Rodrigo; P S Fernández; L Magraner; A Martínez |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Journal of food protection Volume: 62 ISSN: 0362-028X ISO Abbreviation: J. Food Prot. Publication Date: 1999 Aug |
Date Detail:
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Created Date: 1999-10-28 Completed Date: 1999-10-28 Revised Date: 2009-11-19 |
Medline Journal Info:
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Nlm Unique ID: 7703944 Medline TA: J Food Prot Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 958-61 Citation Subset: IM |
Affiliation:
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Instituto de Agroquímica y Tecnología de Alimentos (CSIC), Valencia, Spain. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Colony Count, Microbial Disinfection / methods* Geobacillus stearothermophilus / physiology* Hot Temperature* Spores, Bacterial / physiology Temperature |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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