Tiwari et al. (2009b) found that shelf life of sonicated orange juice
was extended compared to thermal treatment. This result was based
on ascorbic acid retention. Following the EU regulations regarding the
shelf life of orange juice, the predicted shelf life for US-treated samples
ranged from 27 to 33 days compared to 19 for conventionally pasteurized
juice. This effect can be attributed to the effective removal of occluded
oxygen from the juice, a critical factor influencing the stability
of ascorbic acid