Simultaneous measurements of colony size and heat production rate of a mould (<Emphasis Type="Italic">Penicillium brevicompactum</Emphasis>) growing on agar |
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Authors: | Yujing Li Lars Wadsö |
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Institution: | (1) Division of Building Materials, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden |
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Abstract: | Fungal colony size development, often measured as the increase in colony diameter, is used frequently as a parameter for presenting
and modelling fungi's biomass growth. Another measure of fungal growth is the heat production rate (thermal power), which
represents the metabolic activities of the fungi. In this study, the colony size and the heat production rate were simultaneously
measured on a filamentous fungus, Penicillium brevicompactum, at five temperatures. The colony growth was recorded by digital photography and the colony size was quantified by image
analysis. The heat production rate was measured by an isothermal calorimeter. The results showed that the growth of mould
is temperature dependent. During the active growing stage, the colony size increase is correlated to the heat produced by
the mould. |
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