Efficacy of chemical agents and power ultrasound on biofilms formed by Asaia spp. - spoilage bacteria in beverage industries

Iveta Šístková, Iveta Horsáková, Miroslav Čeřovský and Helena Čížková
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Iveta Horsáková: Department of Food Preservation, University of Chemistry and Technology Prague, Prague, Czech Republic
Miroslav Čeřovský: Department of Food Preservation, University of Chemistry and Technology Prague, Prague, Czech Republic
Helena Čížková: Department of Food Preservation, University of Chemistry and Technology Prague, Prague, Czech Republic

Czech Journal of Food Sciences, 2019, vol. 37, issue 4, 221-225

Abstract: Spoilage bacteria were isolated from spoiled fruit-flavoured bottled water with a visual defect in the form of floating flocks. The bacteria were identified as Asaia lannensis using the PCR technique. The efficacy of five chemical agents commonly used in the beverage industry and of power ultrasound (PUS) on Asaia biofilms was studied. A static cultivation procedure on stainless steel plates was used and the efficacy of the chemical agents was tested in two stages. First, only the chemical agents were used. Second, the effect of the application of PUS for 1 min prior to the application of the chemical agents was tested. The most effective chemical agent was the one based on peracetic acid. Its use without PUS proved to be more effective than a combination of any of the other chemical agents with PUS. The least effective methods included the physical sanitation by PUS, the chemical agent based on a 10% solution of sodium hypochlorite and sodium hydroxide, and the chemical agent containing a 0.3% solution of chlorine dioxide.

Keywords: Asaia lannensis; biofilm; cleaning agent; disinfectant; non-alcoholic beverage (search for similar items in EconPapers)
Date: 2019
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlcjf:v:37:y:2019:i:4:id:235-2018-cjfs

DOI: 10.17221/235/2018-CJFS

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