Old dry mold growth seems to emit less bioactive metabolites and surfactants than actively growing microbes

Maria A. Andersson; Tamás Marik; Laszlo Kredics; Heidi Salonen; Jarek Kurnitski

Old dry mold growth seems to emit less bioactive metabolites and surfactants than actively growing microbes

Maria A. Andersson
, Tamás Marik
, Laszlo Kredics
, Heidi Salonen
, Jarek Kurnitski

Research output: Chapter in Book/Report/Conference proceeding › Chapter › Professional

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Abstract

We characterized the toxicity and surfactant properties of old and fresh biomasses of indoor isolates of Trichoderma atroviride,Aspergillus versicolor, Chaetomium sp., Stachybotrys sp. and Rhizopus sp. Toxicity of cell dispersals fromold dry biomasses (> 12 months old) and actively growing molds(< 3 weeks old) was tested as inhibition of proliferation with somatic mammalian cell lines(PK-15 and MNA).Fresh biomasses were up to 100 times more toxic than old dry biomasses. When calculated per conidial particle,100 times more toxicity was associated with the fresh conidia than the old ones.Surfactant activity was detected both in biomass dispersals and exudates. We hypotized that the metabolic state of the fungal growth may influence fungal metabolite emission into indoor air. This information may be important when mouldy buildings are renovated.

Original language	English
Title of host publication	Sisäilmastoseminaari 2019
Editors	Mervi Ahola, Anna Merikari
Publisher	SIY Sisäilmatieto Oy
Pages	215-220
ISBN (Electronic)	978-952-5236-49-1
Publication status	Published - 2019
MoE publication type	D2 Article in a professional research book (incl. an introduction by the editor)
Event	Sisäilmastoseminaari - Helsinki, Finland Duration: 14 Mar 2019 → 14 Mar 2019 Conference number: 34

Publication series

Name	SIY raportti
Publisher	Sisäilmayhdistys
Number	37
ISSN (Print)	1237-1866

Seminar

Seminar	Sisäilmastoseminaari
Country/Territory	Finland
City	Helsinki
Period	14/03/2019 → 14/03/2019

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SIY articleFinal published version, 813 KB

SIBI: Sisätiloissa käytettyjen siivouskemikaalien ja biosidien vaikutukset mitattuun ja koettuun sisäilman laatuun koulu- ja päiväkotirakennuksissa
Salonen, H. (Principal investigator), Järvi, K. (Project Member), Castagnoli, E. (Project Member), Andersson, A. (Project Member), Vornanen, C. (Project Member), Mikkola, R. (Project Member) & Alapieti, T. (Project Member)
01/09/2017 → 31/12/2019
Project: Domestic funds and foundations
Toxin transport mechanisms from moisture damaged structures to indoor air
Kurnitski, J. (Principal investigator), Nguyen, N. (Project Member), Piironen, J. (Project Member), Alapieti, T. (Project Member), Järvi, K. (Project Member), Castagnoli, E. (Project Member), Vornanen, C. (Project Member), Salonen, H. (Project Member), Mikkola, R. (Project Member), Ahmed, K. (Project Member), Taebnia, M. (Project Member) & Andersson, A. (Project Member)
01/09/2015 → 31/08/2019
Project: Academy of Finland: Other research funding

Cite this

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title = "Old dry mold growth seems to emit less bioactive metabolites and surfactants than actively growing microbes",

abstract = "We characterized the toxicity and surfactant properties of old and fresh biomasses of indoor isolates of Trichoderma atroviride,Aspergillus versicolor, Chaetomium sp., Stachybotrys sp. and Rhizopus sp. Toxicity of cell dispersals fromold dry biomasses (> 12 months old) and actively growing molds(< 3 weeks old) was tested as inhibition of proliferation with somatic mammalian cell lines(PK-15 and MNA).Fresh biomasses were up to 100 times more toxic than old dry biomasses. When calculated per conidial particle,100 times more toxicity was associated with the fresh conidia than the old ones.Surfactant activity was detected both in biomass dispersals and exudates. We hypotized that the metabolic state of the fungal growth may influence fungal metabolite emission into indoor air. This information may be important when mouldy buildings are renovated.",

author = "Andersson, \{Maria A.\} and Tam{\'a}s Marik and Laszlo Kredics and Heidi Salonen and Jarek Kurnitski",

year = "2019",

language = "English",

series = "SIY raportti",

publisher = "SIY Sis{\"a}ilmatieto Oy",

number = "37",

pages = "215--220",

editor = "Ahola, \{Mervi \} and Anna Merikari",

booktitle = "Sis{\"a}ilmastoseminaari 2019",

address = "Finland",

note = "Sis{\"a}ilmastoseminaari ; Conference date: 14-03-2019 Through 14-03-2019",

}

Old dry mold growth seems to emit less bioactive metabolites and surfactants than actively growing microbes. / Andersson, Maria A.; Marik, Tamás; Kredics, Laszlo et al.
Sisäilmastoseminaari 2019. ed. / Mervi Ahola; Anna Merikari. SIY Sisäilmatieto Oy, 2019. p. 215-220 (SIY raportti; No. 37).

Research output: Chapter in Book/Report/Conference proceeding › Chapter › Professional

TY - CHAP

T1 - Old dry mold growth seems to emit less bioactive metabolites and surfactants than actively growing microbes

AU - Andersson, Maria A.

AU - Marik, Tamás

AU - Kredics, Laszlo

AU - Salonen, Heidi

AU - Kurnitski, Jarek

N1 - Conference code: 34

PY - 2019

Y1 - 2019

N2 - We characterized the toxicity and surfactant properties of old and fresh biomasses of indoor isolates of Trichoderma atroviride,Aspergillus versicolor, Chaetomium sp., Stachybotrys sp. and Rhizopus sp. Toxicity of cell dispersals fromold dry biomasses (> 12 months old) and actively growing molds(< 3 weeks old) was tested as inhibition of proliferation with somatic mammalian cell lines(PK-15 and MNA).Fresh biomasses were up to 100 times more toxic than old dry biomasses. When calculated per conidial particle,100 times more toxicity was associated with the fresh conidia than the old ones.Surfactant activity was detected both in biomass dispersals and exudates. We hypotized that the metabolic state of the fungal growth may influence fungal metabolite emission into indoor air. This information may be important when mouldy buildings are renovated.

AB - We characterized the toxicity and surfactant properties of old and fresh biomasses of indoor isolates of Trichoderma atroviride,Aspergillus versicolor, Chaetomium sp., Stachybotrys sp. and Rhizopus sp. Toxicity of cell dispersals fromold dry biomasses (> 12 months old) and actively growing molds(< 3 weeks old) was tested as inhibition of proliferation with somatic mammalian cell lines(PK-15 and MNA).Fresh biomasses were up to 100 times more toxic than old dry biomasses. When calculated per conidial particle,100 times more toxicity was associated with the fresh conidia than the old ones.Surfactant activity was detected both in biomass dispersals and exudates. We hypotized that the metabolic state of the fungal growth may influence fungal metabolite emission into indoor air. This information may be important when mouldy buildings are renovated.

M3 - Chapter

T3 - SIY raportti

SP - 215

EP - 220

BT - Sisäilmastoseminaari 2019

A2 - Ahola, Mervi

A2 - Merikari, Anna

PB - SIY Sisäilmatieto Oy

T2 - Sisäilmastoseminaari

Y2 - 14 March 2019 through 14 March 2019

ER -

Old dry mold growth seems to emit less bioactive metabolites and surfactants than actively growing microbes

Abstract

Publication series

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Projects

SIBI: Sisätiloissa käytettyjen siivouskemikaalien ja biosidien vaikutukset mitattuun ja koettuun sisäilman laatuun koulu- ja päiväkotirakennuksissa

Toxin transport mechanisms from moisture damaged structures to indoor air

Cite this