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Improvements on the Stability and Vitamin Content of Acerola Juice Obtained by Ultrasonic Processing
Valéria O Santos1, Sueli Rodrigues2, Fabiano A N Fernandes3
1Departamento de Engenharia Química, Universidade Federal do Ceara, Campus do Pici, Bloco 709, Fortaleza-CE 60440-900, Brazil. valeria.amora@gmail.com.
Abstract:
This work has examined the influence of ultrasonic processing on acerola juice and its influence in the stability of the juice and in the availability of vitamins B, C, E, and pro-vitamin A. The study has evaluated the changes in these quality parameters resulting from changes on ultrasonic power density, processing time and temperature. Ultrasound application increased the availability of pro-vitamin A and vitamins B₃, B₅, C and E in the juice by releasing them from the apoenzymes to which they are bound and by improving the homogeneity of the juice. The retention of the major vitamins in acerola juice (vitamins A and C) was higher when lower temperatures (10 to 20 °C) and mild ultrasound power density (2000 to 3000 W/L) were applied.
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