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J Microbiol Biotechnol

Title:		Volatile Metabolic Markers for Monitoring Pectobacterium carotovorum subsp. carotovorum Using Headspace Solid-Phase Microextraction Coupled with Gas Chromatography-Mass Spectrometry
Author(s):		Yang JS; Lee HW; Song H; Ha JH;
Address:		"Hygienic Safety and Analysis Center, World Institute of Kimchi, Gwangju 61755, Republic of Korea"
Journal Title:		J Microbiol Biotechnol
Year:		2021
Volume:		31
Issue:		1
Page Number:		70 - 78
DOI:		10.4014/jmb.2009.09028
ISSN/ISBN:		1738-8872 (Electronic) 1017-7825 (Print) 1017-7825 (Linking)
Abstract:		"Identifying the extracellular metabolites of microorganisms in fresh vegetables is industrially useful for assessing the quality of processed foods. Pectobacterium carotovorum subsp. carotovorum (PCC) is a plant pathogenic bacterium that causes soft rot disease in cabbages. This microbial species in plant tissues can emit specific volatile molecules with odors that are characteristic of the host cell tissues and PCC species. In this study, we used headspace solid-phase microextraction followed by gas chromatography coupled with mass spectrometry (HS-SPME-GC-MS) to identify volatile compounds (VCs) in PCC-inoculated cabbage at different storage temperatures. HS-SPME-GC-MS allowed for recognition of extracellular metabolites in PCC-infected cabbages by identifying specific volatile metabolic markers. We identified 4-ethyl-5-methylthiazole and 3-butenyl isothiocyanate as markers of fresh cabbages, whereas 2,3-butanediol and ethyl acetate were identified as markers of soft rot in PCC-infected cabbages. These analytical results demonstrate a suitable approach for establishing non-destructive plant pathogen-diagnosis techniques as alternatives to standard methods, within the framework of developing rapid and efficient analytical techniques for monitoring plant-borne bacterial pathogens. Moreover, our techniques could have promising applications in managing the freshness and quality control of cabbages"
Keywords:		Acetates Biomarkers Brassica Butylene Glycols Gas Chromatography-Mass Spectrometry/*methods Odorants/analysis Pectobacterium/*metabolism Plant Diseases Solid Phase Microextraction/*methods Temperature Volatile Organic Compounds/*analysis Cabbage Pectobact;
Notes:		"MedlineYang, Ji-Su Lee, Hae-Won Song, Hyeyeon Ha, Ji-Hyoung eng Korea (South) 2020/11/19 J Microbiol Biotechnol. 2021 Jan 28; 31(1):70-78. doi: 10.4014/jmb.2009.09028"