There is no published information about soymilk treated by UHPH and aseptically packaged to compare with this study. However, different studies have been published about UHT treatments in soymilk. For instance, Achouri, Boye, and Zamani (2007) submitted soymilk samples to UHT treatment (142 °C, 4 s) followed by aseptic packaging in coated
paperboard and stored for 3 months at 3 controlled temperatures of 4, 22 and 38 °C. They reported counts below the limit of detection (b10 CFU/mL) during storage. Nevertheless, a significant decrease in the pH (0.6–0.7 units) measurements after 1 month of storage was observed. Beyond this point, the pH increased (values around 7) and
remained stable during the rest of the storage period. The pH decrease was attributed to the chemical interactions caused by lipolysis and proteolysis
reactions.