Microbial volatile organic compounds

Microbial volatile organic compounds ( engl. Microbial Volatile Organic Compounds - MVOCs ) are volatile metabolic products of microorganisms. The term MVOC was coined analogously to the term VOC .

background

Microbial volatile organic compounds consist of different substance classes such as aldehydes , alkanols , alkenols , ethers , ketones , terpenes and have boiling points from 0 ° C to 250 ° C. They can be an effector or act on other organisms. Musty odor is often attributed to the formation of microbial volatile organic compounds by mold or bacteria.

Metrological proof

A metrological detection of microbial volatile organic compounds can take place by means of adsorption with subsequent thermal desorption or solvent desorption. Due to the volatility of the substances to be detected and their large number, the gas chromatography method is used to determine individual components .

The detection of selected microbial volatile organic compounds can give an indication of a hidden mold infestation. Their concentration is in the ng / m ³ range.

literature

VDI 4254 sheet 1: 2018-06 bioaerosols and biological agents; Measuring metabolic products of microorganisms; Measurement of MVOC in the outside air (Bioaerosols and biological agents; Measurement of metabolites of microorganisms; Measurement of MVOC in ambient air). Beuth Verlag, Berlin. ( Summary and table of contents online )

Individual evidence

↑ Reinhard Keller, Klaus Senkpiel, Werner Butte: detection of seasonal MVOCs reference values in the unloaded apartments. In: Hazardous substances - cleanliness. Air . 66, No. 3, 2006, ISSN 0949-8036 , pp. 107-111.
↑ Reinhard Keller, Klaus Senkpiel, Werner Butte: Molds and their secondary metabolites (MVOC) in air samples from unpolluted apartments. In: Hazardous substances - cleanliness. Air. 67, No. 3, 2007, ISSN 0949-8036 , pp. 77-84.

[1] Reinhard Keller, Klaus Senkpiel, Werner Butte: detection of seasonal MVOCs reference values in the unloaded apartments. In: Hazardous substances - cleanliness. Air . 66, No. 3, 2006, ISSN 0949-8036 , pp. 107-111.

[2] Reinhard Keller, Klaus Senkpiel, Werner Butte: Molds and their secondary metabolites (MVOC) in air samples from unpolluted apartments. In: Hazardous substances - cleanliness. Air. 67, No. 3, 2007, ISSN 0949-8036 , pp. 77-84.