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The activity of rot fungi (Postia placenta) during drying and rewetting cycles measured by isothermal calorimetry

Wadsö, Lars LU ; Johansson, Sanne LU ; Pilgard, Annica and Alfredsen, Gry (2013) In Engineering in Life Sciences 13(6). p.536-540
Abstract
Rot fungi are a major problem in the construction sector, and method to study under which moisture and temperature coefficients they grow are therefore of significant interest. Measurements of heat production rate have been made on wood samples with the brown rot fungus Postia placenta at different moisture contents (MCs). The results clearly show the heat production rate (a measure of respiration rate and fungal activity) is moisture-dependent. For most cases, less heat was produced when the MC was decreased, and more heat was produced when the MC was increased. It was also found that when the MC increased after a dry period, the increase in activity was significantly delayed. However, if the moisture state was then kept constant at a... (More)
Rot fungi are a major problem in the construction sector, and method to study under which moisture and temperature coefficients they grow are therefore of significant interest. Measurements of heat production rate have been made on wood samples with the brown rot fungus Postia placenta at different moisture contents (MCs). The results clearly show the heat production rate (a measure of respiration rate and fungal activity) is moisture-dependent. For most cases, less heat was produced when the MC was decreased, and more heat was produced when the MC was increased. It was also found that when the MC increased after a dry period, the increase in activity was significantly delayed. However, if the moisture state was then kept constant at a high level, the activity slowly increased, showing that the fungi need time to recover back to the original activity level after drying. Isothermal calorimetry is a measurement technique well suited for the study of the activity of wood-decaying fungi as a function of temperature and moisture content. (Less)
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author
; ; and
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Brown rot, Early decay, Heat production rate, Isothermal calorimetry, Relative humidity
in
Engineering in Life Sciences
volume
13
issue
6
pages
536 - 540
publisher
Wiley-Blackwell
external identifiers
  • wos:000326458900005
  • scopus:84887037146
ISSN
1618-2863
DOI
10.1002/elsc.201200096
language
English
LU publication?
yes
id
eb9d655b-b1b7-4627-bbde-f6602a13bfc0 (old id 4204454)
date added to LUP
2016-04-01 10:15:34
date last changed
2020-04-01 01:27:18
@article{eb9d655b-b1b7-4627-bbde-f6602a13bfc0,
  abstract     = {Rot fungi are a major problem in the construction sector, and method to study under which moisture and temperature coefficients they grow are therefore of significant interest. Measurements of heat production rate have been made on wood samples with the brown rot fungus Postia placenta at different moisture contents (MCs). The results clearly show the heat production rate (a measure of respiration rate and fungal activity) is moisture-dependent. For most cases, less heat was produced when the MC was decreased, and more heat was produced when the MC was increased. It was also found that when the MC increased after a dry period, the increase in activity was significantly delayed. However, if the moisture state was then kept constant at a high level, the activity slowly increased, showing that the fungi need time to recover back to the original activity level after drying. Isothermal calorimetry is a measurement technique well suited for the study of the activity of wood-decaying fungi as a function of temperature and moisture content.},
  author       = {Wadsö, Lars and Johansson, Sanne and Pilgard, Annica and Alfredsen, Gry},
  issn         = {1618-2863},
  language     = {eng},
  number       = {6},
  pages        = {536--540},
  publisher    = {Wiley-Blackwell},
  series       = {Engineering in Life Sciences},
  title        = {The activity of rot fungi (Postia placenta) during drying and rewetting cycles measured by isothermal calorimetry},
  url          = {http://dx.doi.org/10.1002/elsc.201200096},
  doi          = {10.1002/elsc.201200096},
  volume       = {13},
  year         = {2013},
}