Scott and Somers (1968) reported on a 50% reduction of PAT
(200 lg initial concentration) in canned apple juice, after heating
at 80 C for 10 min. In addition, heating apple juice for nearly 3 h
at 100 C resulted in a PAT reduction of 33% (Kryger, 2001). According to Drusch et al. (2007), AA content can also reduce the stability
of PAT at acidic pH. The PAT concentration was decreased to 70% in
the presence of AA compared to 32–29% in samples without AA.