Detection of Fungi and Oomycetes by Volatiles Using E-Nose and SPME-GC/MS Platforms

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ID: 263802
2020
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Abstract
Fungi and oomycetes release volatiles into their environment which could be used for olfactory detection and identification of these organisms by electronic-nose (e-nose). The aim of this study was to survey volatile compound emission using an e-nose device and to identify released molecules through solid phase microextraction-gas chromatography/mass spectrometry (SPME-GC/MS) analysis to ultimately develop a detection system for fungi and fungi-like organisms. To this end, cultures of eight fungi (, , , , , , , ) and four oomycetes (, , , ) were tested with the e-nose system and investigated by means of SPME-GC/MS. Strains of , and appeared to be the most odoriferous. All investigated fungal species (except ) produced sesquiterpenes in variable amounts, in contrast to the tested oomycetes strains. Other molecules such as aliphatic hydrocarbons, alcohols, aldehydes, esters and benzene derivatives were found in all samples. The results suggested that the major differences between respective VOC emission ranges of the tested species lie in sesquiterpene production, with fungi emitting some while oomycetes released none or smaller amounts of such molecules. Our e-nose system could discriminate between the odors emitted by , , and , which accounted for over 88% of the PCA variance. These preliminary results of fungal and oomycete detection make the e-nose device suitable for further sensor design as a potential tool for forest managers, other plant managers, as well as regulatory agencies such as quarantine services.
Reference Key
loulier2020detectionmolecules Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Loulier, J.
Journal molecules
Year 2020
DOI
10.3390/molecules25235749
URL
Keywords Keywords not found

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