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

Author

Listed:
  • Iveta Šístková
  • 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)

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.

Suggested Citation

  • Iveta Šístková & Iveta Horsáková & Miroslav Čeřovský & Helena Čížková, 2019. "Efficacy of chemical agents and power ultrasound on biofilms formed by Asaia spp. - spoilage bacteria in beverage industries," Czech Journal of Food Sciences, Czech Academy of Agricultural Sciences, vol. 37(4), pages 221-225.
    • Handle: RePEc:caa:jnlcjf:v:37:y:2019:i:4:id:235-2018-cjfs
    DOI: 10.17221/235/2018-CJFS
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