Influence of water activity and temperature on the growth of Wallemia sebi: Application of a predictive model
Germination and growth of Wallemia sebi were examined on media of aw adjusted with glycerol in the range of 0.96-0.77, at 25°C and 30°C. The effect of temperature on the germination time was significant except between 0.95 and 0.88aw. At low aw levels as well as above 0.95, the increase of temperatu...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_01681605_v68_n1-2_p61_Patriarca |
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todo:paper_01681605_v68_n1-2_p61_Patriarca2023-10-03T15:06:01Z Influence of water activity and temperature on the growth of Wallemia sebi: Application of a predictive model Patriarca, A. Vaamonde, G. Fernández Pinto, V. Comerio, R. Growth Predictive microbiology Temperature Wallemia Water activity glycerol water article controlled study culture medium food contamination fungus growth germination mathematical model mould nonhuman temperature sensitivity wallemia sebi Culture Media Food Contamination Food Microbiology Germination Mitosporic Fungi Models, Theoretical Temperature Time Factors Water Germination and growth of Wallemia sebi were examined on media of aw adjusted with glycerol in the range of 0.96-0.77, at 25°C and 30°C. The effect of temperature on the germination time was significant except between 0.95 and 0.88aw. At low aw levels as well as above 0.95, the increase of temperature produced an increment in the germination time. The minimum aw for germination was also affected by temperature, being lower at 25°C (0.80 aw) than at 30°C (0.82 aw). Radial growth rates at 25°C were higher than at 30°C. The optimum aw value for growth of W. sebi was 0.94 at both temperatures. The minimum aw for growth was higher than minimum for germination and was also dependent on temperature (0.84 at 25°C and 0.86 at 30°C). An empirical mathematical model was fitted to the measured growth data, providing a good approach to the description of the effect of aw on the radial growth rate of W. sebi. © 2001 Elsevier Science B.V. All rights reserved. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_01681605_v68_n1-2_p61_Patriarca |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Growth Predictive microbiology Temperature Wallemia Water activity glycerol water article controlled study culture medium food contamination fungus growth germination mathematical model mould nonhuman temperature sensitivity wallemia sebi Culture Media Food Contamination Food Microbiology Germination Mitosporic Fungi Models, Theoretical Temperature Time Factors Water |
| spellingShingle |
Growth Predictive microbiology Temperature Wallemia Water activity glycerol water article controlled study culture medium food contamination fungus growth germination mathematical model mould nonhuman temperature sensitivity wallemia sebi Culture Media Food Contamination Food Microbiology Germination Mitosporic Fungi Models, Theoretical Temperature Time Factors Water Patriarca, A. Vaamonde, G. Fernández Pinto, V. Comerio, R. Influence of water activity and temperature on the growth of Wallemia sebi: Application of a predictive model |
| topic_facet |
Growth Predictive microbiology Temperature Wallemia Water activity glycerol water article controlled study culture medium food contamination fungus growth germination mathematical model mould nonhuman temperature sensitivity wallemia sebi Culture Media Food Contamination Food Microbiology Germination Mitosporic Fungi Models, Theoretical Temperature Time Factors Water |
| description |
Germination and growth of Wallemia sebi were examined on media of aw adjusted with glycerol in the range of 0.96-0.77, at 25°C and 30°C. The effect of temperature on the germination time was significant except between 0.95 and 0.88aw. At low aw levels as well as above 0.95, the increase of temperature produced an increment in the germination time. The minimum aw for germination was also affected by temperature, being lower at 25°C (0.80 aw) than at 30°C (0.82 aw). Radial growth rates at 25°C were higher than at 30°C. The optimum aw value for growth of W. sebi was 0.94 at both temperatures. The minimum aw for growth was higher than minimum for germination and was also dependent on temperature (0.84 at 25°C and 0.86 at 30°C). An empirical mathematical model was fitted to the measured growth data, providing a good approach to the description of the effect of aw on the radial growth rate of W. sebi. © 2001 Elsevier Science B.V. All rights reserved. |
| format |
JOUR |
| author |
Patriarca, A. Vaamonde, G. Fernández Pinto, V. Comerio, R. |
| author_facet |
Patriarca, A. Vaamonde, G. Fernández Pinto, V. Comerio, R. |
| author_sort |
Patriarca, A. |
| title |
Influence of water activity and temperature on the growth of Wallemia sebi: Application of a predictive model |
| title_short |
Influence of water activity and temperature on the growth of Wallemia sebi: Application of a predictive model |
| title_full |
Influence of water activity and temperature on the growth of Wallemia sebi: Application of a predictive model |
| title_fullStr |
Influence of water activity and temperature on the growth of Wallemia sebi: Application of a predictive model |
| title_full_unstemmed |
Influence of water activity and temperature on the growth of Wallemia sebi: Application of a predictive model |
| title_sort |
influence of water activity and temperature on the growth of wallemia sebi: application of a predictive model |
| url |
http://hdl.handle.net/20.500.12110/paper_01681605_v68_n1-2_p61_Patriarca |
| work_keys_str_mv |
AT patriarcaa influenceofwateractivityandtemperatureonthegrowthofwallemiasebiapplicationofapredictivemodel AT vaamondeg influenceofwateractivityandtemperatureonthegrowthofwallemiasebiapplicationofapredictivemodel AT fernandezpintov influenceofwateractivityandtemperatureonthegrowthofwallemiasebiapplicationofapredictivemodel AT comerior influenceofwateractivityandtemperatureonthegrowthofwallemiasebiapplicationofapredictivemodel |
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