Similarly, US processing of orange juice resulted in a decrease of
ascorbic acid as a function of AED and treatment time, being the largest
reduction of ascorbic acid less than 5% at the maximumtreatment conditions
(0.81W/ml, 10 min) (Tiwari et al., 2009b). Moreover, these authors
also determined that the degradation of ascorbic acid in sonicated
samples at different acoustic energy density (AED) levels (0.30–0.81 W/mL)
had first-order kinetics. In the same study, they evaluated and compared
the ascorbic acid modifications of US-treated samples to thermallytreated
samples immediately after the treatment and during subsequent
30 days storage at 10 °C