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Differentiation of Toxic Molds via Headspace SPME-GC/MS and Canine Detection

View Article: PubMed Central

ABSTRACT

Indoor mold growth has recently become a concern in the legal world in regards to insurance litigation. Hazardous mold exposure to humans has been linked to many acute and chronic adverse health effects including death. As it grows, mold produces several types of primary and secondary metabolites, including microbial volatile organic compounds (MVOCs). Microbial volatile organic compound emission may be used as a preliminary indication of a mold infestation that is invisible to the unaided eye. The objective of the study is to identify the unique odor signatures of three species of molds, Aspergillus versicolor, Penicillium chrysogenum, and Stachybotrys chartarum by SPME-GC/MS analysis. Determining the compounds that are emitted by the selected species has made it possible to conduct validation studies of canine detection of these mold species through a series of field tests.

No MeSH data available.


Related in: MedlinePlus

Percent peak areas of common compounds found in headspaces of Aspergillus versicolor, Penicillium chrysogenum, and Stachybotrys chartarum, CW/DVB, 18 hour exposures
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f6-sensors-07-01496: Percent peak areas of common compounds found in headspaces of Aspergillus versicolor, Penicillium chrysogenum, and Stachybotrys chartarum, CW/DVB, 18 hour exposures

Mentions: Some microbial volatile organic compounds were common amongst the three species. 1-hexanol, hexanoic acid, and benzene were extracted from the headspaces of all three species analyzed. Arsenous acid, dodecanoic acid, tetradecanoic acid, n-butyl laurate and 1,4,7,10,13,16,19-heptaoxa-2-cycloheneicosanone were extracted from the headspaces of both Aspergillus versicolor and Penicillium chrysogenum. Oxirane was extracted from the headspaces of both Penicillium chrysogenum and Stachybotrys chartarum. Even amongst these commonly seen compounds, there is a great difference in the percent peak areas detected between these three species. Knowledge of the similarities and differences of the odor signatures of various toxic indoor mold species is very significant and useful in the improvement of existing canine training aids. Figure 6 below illustrates the differences in the percent peak areas of these common compounds.


Differentiation of Toxic Molds via Headspace SPME-GC/MS and Canine Detection
Percent peak areas of common compounds found in headspaces of Aspergillus versicolor, Penicillium chrysogenum, and Stachybotrys chartarum, CW/DVB, 18 hour exposures
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC3814865&req=5

f6-sensors-07-01496: Percent peak areas of common compounds found in headspaces of Aspergillus versicolor, Penicillium chrysogenum, and Stachybotrys chartarum, CW/DVB, 18 hour exposures
Mentions: Some microbial volatile organic compounds were common amongst the three species. 1-hexanol, hexanoic acid, and benzene were extracted from the headspaces of all three species analyzed. Arsenous acid, dodecanoic acid, tetradecanoic acid, n-butyl laurate and 1,4,7,10,13,16,19-heptaoxa-2-cycloheneicosanone were extracted from the headspaces of both Aspergillus versicolor and Penicillium chrysogenum. Oxirane was extracted from the headspaces of both Penicillium chrysogenum and Stachybotrys chartarum. Even amongst these commonly seen compounds, there is a great difference in the percent peak areas detected between these three species. Knowledge of the similarities and differences of the odor signatures of various toxic indoor mold species is very significant and useful in the improvement of existing canine training aids. Figure 6 below illustrates the differences in the percent peak areas of these common compounds.

View Article: PubMed Central

ABSTRACT

Indoor mold growth has recently become a concern in the legal world in regards to insurance litigation. Hazardous mold exposure to humans has been linked to many acute and chronic adverse health effects including death. As it grows, mold produces several types of primary and secondary metabolites, including microbial volatile organic compounds (MVOCs). Microbial volatile organic compound emission may be used as a preliminary indication of a mold infestation that is invisible to the unaided eye. The objective of the study is to identify the unique odor signatures of three species of molds, Aspergillus versicolor, Penicillium chrysogenum, and Stachybotrys chartarum by SPME-GC/MS analysis. Determining the compounds that are emitted by the selected species has made it possible to conduct validation studies of canine detection of these mold species through a series of field tests.

No MeSH data available.


Related in: MedlinePlus