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Determination of unique microbial volatile organic compounds produced by five Aspergillus species commonly found in problem buildings.

Authors
Gao-P; Korley-F; Martin-J; Chen-BT
Source
Am Ind Hyg Assoc J 2002 Mar/Apr; 63(2):135-140
NIOSHTIC No.
20022402
Abstract
This study identified unique microbial volatile organic compounds (UMVOCs) produced by five Aspergillus species (A. fumigatus, A. versicolor, A. sydowi, A. flavus, and A. niger) cultivated on malt extract agar and gypsum board. The hypothesis was that UMVOCs can be used to predict the presence of Aspergillus species. During the cultivation humidified air was continually supplied and evenly distributed through each of the culture flasks. Volatile metabolites were collected using Tenax TA tubes on Days 8, 16, and 30 after inoculation. The volatile metabolites were determined by gas chromatography/mass spectroscopy after thermal desorption. Nine compounds recognized as UMVOCs--3-methyl-1-butanol; 2-methyl-1-propanol; terpineol; 2-heptanone; 1-octen-3-ol; dimethyl disulfide; 2-hexanone; 3-octanone; and 2-pentylfuran--were found on the cultures in detectable amounts. The first two compounds were detected at the highest frequency when combining both media. The first four compounds were found to be the dominant UMVOCs on gypsum board, which could be used as chemical markers of the common Aspergillus species grown indoors.
Keywords
Indoor-air-pollution; Air-quality; Air-contamination; Odors; Fungi; Metabolites; Humidity; Organic-chemicals; Microorganisms; Indoor-environmental-quality
Contact
National Institute for Occupational Safety and Health, 1095 Willowdale Road, Morgantown, WV 26505
CODEN
AIHAAP
Publication Date
20020301
Document Type
Journal Article
Email Address
Pgoa@cdc.gov
Fiscal Year
2002
NTIS Accession No.
NTIS Price
Issue of Publication
2
ISSN
0002-8894
NIOSH Division
HELD
Priority Area
Research Tools and Approaches: Exposure Assessment Methods
Source Name
American Industrial Hygiene Association Journal
State
WV
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