Hongchao Dai, Yanhe Zhang, Zhenbo Xu, Thanapop Stoteyome, Lei Yuan
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Ultrasound promoted the inactivation efficacy of lactic acid against calcium-mediated biofilm formation by Pseudomonas fluorescens
This study investigated the synergistic effects of lactic acid (0.5%, 1% and 2%) and ultrasound (400 W, 20 kHz) on the inactivation of Pseudomonas fluorescens. Combined ultrasound and 2% lactic acid for 5 min reduced the planktonic cell count below 1.40 log cfu/mL. Ultrasound promoted the inactivation of P. fluorescens biofilms by lactic acid and increased the release of ATP and nucleic acids from bacterial cells by 0.09–0.22 μmol/OD and 0.043–0.113 of OD260 values, respectively. Results indicated that combined ultrasound and lactic acid can serve as a potential technique to control P. fluorescens biofilms.
期刊介绍:
The International Journal of Dairy Technology ranks highly among the leading dairy journals published worldwide, and is the flagship of the Society. As indicated in its title, the journal is international in scope.
Published quarterly, International Journal of Dairy Technology contains original papers and review articles covering topics that are at the interface between fundamental dairy research and the practical technological challenges facing the modern dairy industry worldwide. Topics addressed span the full range of dairy technologies, the production of diverse dairy products across the world and the development of dairy ingredients for food applications.