Impact of temperature on growth and metabolic efficiency of Penicillium roqueforti - Correlations between produced heat, ergosterol content and biomass
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Summary, in English
The influence of temperature on the growth of the mould Penicillium roqueforti growing on malt extract agar was studied by correlating the produced heat (measured by isothermal calorimetry), ergosterol content (quantified by GC-MS/MS) and biomass of the mould at 10, 15, 20, 25 and 30°C. The results were analysed with a simple metabolic model from which the metabolic efficiency was calculated. The results show that the impact of temperature on growth rate and metabolic efficiency are different: although the mould fungus had the highest growth rate (in terms of thermal power, which was continuously measured) at 25°C, the substrate carbon conversion efficiency (biomass production divided by substrate consumption, both counted as moles carbon) was highest at 20°C. The temperature of the most rapid growth did therefore not equal the temperature of the most efficient growth.
Publishing year
2009
Language
English
Pages
1494-1501
Publication/Series
Journal of Applied Microbiology
Volume
106
Issue
Online 4 Feb 2009
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Document type
Journal article
Publisher
Wiley-Blackwell
Topic
- Materials Engineering
Status
Published
ISBN/ISSN/Other
- ISSN: 1364-5072