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Updated: Sep 7, 2025
Activating Molecules, Ions, and Solid Particles with Acoustic Cavitation
Published on: April 11, 2014
Insights on the effectiveness of pneumatic and ultrasonic atomization in combination with UVC light for processing of
Oscar Antonio-Gutiérrez1, Andrea Selene López-Díaz1, Emma Mani-López1
1Departamento de Ingeniería Química, Alimentos y Ambiental, Universidad de las Américas Puebla, 72810 San Andrés Cholula, Puebla México.
Abstract:
This study evaluated the effectiveness of spraying juices, during shortwave ultraviolet irradiation (UVC) treatments as an alternative to promote more contact area, by means of ultrasonic atomization (UA) and pneumatic atomization (PA). Four juices with dissimilar physical characteristics were processed to assess the effect of suspended solids and turbidity. Antioxidant activity, anthocyanins, ascorbic acid, and inactivation of Saccharomyces cerevisiae inoculated in the juices were evaluated. Five decimal reduction cycles were reached after two passes of orange or grapefruit juice through the UVC + UA arrangement. On the other hand, five decimal reduction cycles were achieved after three passes in the UVC + PA arrangement. Losses of 11% and 14% of ascorbic acid were observed in orange and grapefruit juice, respectively, while anthocyanin content presented losses of 50% and antioxidant activity decreased by 40% for pomegranate and blueberry juice, correspondingly.
