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A test of models for fungal growth based on metabolic heat rate measurements

Wadsö, Lars LU and Li, Yujing LU (2007) In Preprint without journal information
Abstract
This paper presents a test of modelling of fungal growth based on the heat produced by Penicillium roqueforti growing on malt extract agar. Thermal power (heat production rate) of P. roqueforti was measured by isothermal calorimetry at 10, 15, 20, 25 and 30°C. The equivalent diameter of similar colonies growing at 20°C were measured by image analysis. Four predictive

equations including time lag were tested on the thermal power curves for the accelerated growth phase. All equations were successful in fitting the growth curves and the result did not suggest that one of the equations was superior to the others. P. roqueforti had the fastest growth at 25°C as

judged form the thermal power curves and simulation results.... (More)
This paper presents a test of modelling of fungal growth based on the heat produced by Penicillium roqueforti growing on malt extract agar. Thermal power (heat production rate) of P. roqueforti was measured by isothermal calorimetry at 10, 15, 20, 25 and 30°C. The equivalent diameter of similar colonies growing at 20°C were measured by image analysis. Four predictive

equations including time lag were tested on the thermal power curves for the accelerated growth phase. All equations were successful in fitting the growth curves and the result did not suggest that one of the equations was superior to the others. P. roqueforti had the fastest growth at 25°C as

judged form the thermal power curves and simulation results. Calorimetric measurements have several advantages over conventional techniques. For example calorimetric measurements are continuous and not limited to organisms growing on agar surfaces; also growth inside of a substrate can be studied. Therefore calorimetry can be a valuable measurement technique in

predictive microbiology. (Less)
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organization
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type
Contribution to journal
publication status
unpublished
subject
keywords
Calorimetry, fungal growth, temperature, Penicillium roqueforti, predictive microbiology
in
Preprint without journal information
pages
14 pages
publisher
Manne Siegbahn Institute
ISSN
0348-7911
language
English
LU publication?
yes
id
1407e989-21bd-41fc-9f18-31d2bbb0abe1 (old id 1530149)
date added to LUP
2010-01-21 08:58:51
date last changed
2016-04-16 03:35:46
@article{1407e989-21bd-41fc-9f18-31d2bbb0abe1,
  abstract     = {This paper presents a test of modelling of fungal growth based on the heat produced by Penicillium roqueforti growing on malt extract agar. Thermal power (heat production rate) of P. roqueforti was measured by isothermal calorimetry at 10, 15, 20, 25 and 30°C. The equivalent diameter of similar colonies growing at 20°C were measured by image analysis. Four predictive<br/><br>
equations including time lag were tested on the thermal power curves for the accelerated growth phase. All equations were successful in fitting the growth curves and the result did not suggest that one of the equations was superior to the others. P. roqueforti had the fastest growth at 25°C as<br/><br>
judged form the thermal power curves and simulation results. Calorimetric measurements have several advantages over conventional techniques. For example calorimetric measurements are continuous and not limited to organisms growing on agar surfaces; also growth inside of a substrate can be studied. Therefore calorimetry can be a valuable measurement technique in<br/><br>
predictive microbiology.},
  author       = {Wadsö, Lars and Li, Yujing},
  issn         = {0348-7911},
  keyword      = {Calorimetry,fungal growth,temperature,Penicillium roqueforti,predictive microbiology},
  language     = {eng},
  pages        = {14},
  publisher    = {Manne Siegbahn Institute},
  series       = {Preprint without journal information},
  title        = {A test of models for fungal growth based on metabolic heat rate measurements},
  year         = {2007},
}