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Effect of combined ultrasonic and heat treatment (thermoultrasonication) on the survival of a strain of Staphylococcus aureus

  • Juan A. Ordoñez (a1), M. Angeles Aguilera (a1), M. Luisa Garcia (a1) and Bernabe Sanz (a1)

Summary

The combined effect of ultrasonic waves (20 kHz, 150 W) and heat treatment applied simultaneously (thermoultrasonication) on the survival of a strain of Staphylococcus aureus was studied in 0·05 m-phosphate buffer pH 6·8 and ultra-heat-treated whole milk. This combined process decreased by 63% the decimal reduction times for the heat treatment when the organism was suspended in buffer and by 43% when suspended in milk. These effects were much greater than the additive effect of the two agents considered independently.

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Effect of combined ultrasonic and heat treatment (thermoultrasonication) on the survival of a strain of Staphylococcus aureus

  • Juan A. Ordoñez (a1), M. Angeles Aguilera (a1), M. Luisa Garcia (a1) and Bernabe Sanz (a1)

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