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Food Microbiol


Title:Volatile organic compounds (VOCs) produced by biocontrol yeasts
Author(s):Contarino R; Brighina S; Fallico B; Cirvilleri G; Parafati L; Restuccia C;
Address:"Di3A, University of Catania, via Santa Sofia 100, 95123, Catania, Italy. Di3A, University of Catania, via Santa Sofia 100, 95123, Catania, Italy. Electronic address: crestu@unict.it"
Journal Title:Food Microbiol
Year:2019
Volume:20190118
Issue:
Page Number:70 - 74
DOI: 10.1016/j.fm.2019.01.008
ISSN/ISBN:1095-9998 (Electronic) 0740-0020 (Linking)
Abstract:"The Volatile organic compounds (VOCs) produced by biocontrol yeast strains which belong to the Wickerhamomyces anomalus, Metschnikowia pulcherrima, Aureobasidium pullulans and Saccharomyces cerevisiae species were identified by solid phase microextraction (SPME) coupled with Gas Chromatography-Mass Spectrometry (GC-MS). Alcohols (ethyl alcohol, 3-methyl-1-butanol and phenylethyl alcohol) and esters (ethyl acetate and isoamyl acetate) were found to be the main VOCs emitted by the yeast strains, which had different production rate over a 16-day period. In addition, the tested yeast strains showed a remarkable ability to consume oxygen and to produce high percentages of carbon dioxide over a 5 days incubation period in a model system. The yeast strains, which were proven to very efficiently suppress in vivo the growth of postharvest fungal by VOCs, also quickly produced high percentages of ethyl acetate and carbon dioxide. . For all these reasons, we believe that the level of yeast biocontrol efficacy through the production of volatiles could be the result of a synergistic effect between VOCs and carbon dioxide in the packaging environment"
Keywords:Acetates/analysis Alcohols/analysis Biological Control Agents/*metabolism Carbon Dioxide/analysis Esters/analysis Fruit/microbiology Gas Chromatography-Mass Spectrometry Metschnikowia/metabolism Saccharomyces cerevisiae/metabolism Volatile Organic Compoun;
Notes:"MedlineContarino, Rosaria Brighina, Selina Fallico, Biagio Cirvilleri, Gabriella Parafati, Lucia Restuccia, Cristina eng England 2019/04/28 Food Microbiol. 2019 Sep; 82:70-74. doi: 10.1016/j.fm.2019.01.008. Epub 2019 Jan 18"

 
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