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A microcalorimetric method of studying mould activity as a function of water activity

Markova, N and Wadsö, Lars LU (1998) In International Biodeterioration & Biodegradation 42(1). p.25-28
Abstract
This paper presents a new method of studying mould activity as a function of water activity by measuring the heat produced by the fungal metabolism. During a measurement a small sample (<1 g) of a moulded substrate is moved between a humidity generator, where it is conditioned to a certain water activity, and a microcalorimeter, where the heat production rate is measured. This is repeated for different water activities. A conditioning and the subsequent thermal measurement takes approximately one day for each water activity. Results are presented from a measurement with Penicillium mould growing on a bread substrate. The results correlate well with literature data indicating that the present method is a rapid way of assessing mould... (More)
This paper presents a new method of studying mould activity as a function of water activity by measuring the heat produced by the fungal metabolism. During a measurement a small sample (<1 g) of a moulded substrate is moved between a humidity generator, where it is conditioned to a certain water activity, and a microcalorimeter, where the heat production rate is measured. This is repeated for different water activities. A conditioning and the subsequent thermal measurement takes approximately one day for each water activity. Results are presented from a measurement with Penicillium mould growing on a bread substrate. The results correlate well with literature data indicating that the present method is a rapid way of assessing mould activity as a function of water activity. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
International Biodeterioration & Biodegradation
volume
42
issue
1
pages
25 - 28
publisher
Elsevier
external identifiers
  • scopus:0031787431
ISSN
1879-0208
DOI
10.1016/S0964-8305(98)00042-0
language
English
LU publication?
yes
id
1d136ffd-6d08-444a-9c50-76c0e5aec513 (old id 1034492)
date added to LUP
2008-02-19 08:58:05
date last changed
2017-02-26 03:40:00
@article{1d136ffd-6d08-444a-9c50-76c0e5aec513,
  abstract     = {This paper presents a new method of studying mould activity as a function of water activity by measuring the heat produced by the fungal metabolism. During a measurement a small sample (&lt;1 g) of a moulded substrate is moved between a humidity generator, where it is conditioned to a certain water activity, and a microcalorimeter, where the heat production rate is measured. This is repeated for different water activities. A conditioning and the subsequent thermal measurement takes approximately one day for each water activity. Results are presented from a measurement with Penicillium mould growing on a bread substrate. The results correlate well with literature data indicating that the present method is a rapid way of assessing mould activity as a function of water activity.},
  author       = {Markova, N and Wadsö, Lars},
  issn         = {1879-0208},
  language     = {eng},
  number       = {1},
  pages        = {25--28},
  publisher    = {Elsevier},
  series       = {International Biodeterioration & Biodegradation},
  title        = {A microcalorimetric method of studying mould activity as a function of water activity},
  url          = {http://dx.doi.org/10.1016/S0964-8305(98)00042-0},
  volume       = {42},
  year         = {1998},
}