Likewise in
day 1, UHPH and UHT soymilks remained sterile during all storage
period analyzed. Supporting these microbiological results, pH measurements
did not change significantly and remained constant around the
neutral value during storage at room temperature (Fig. 1). The good microbiological
quality of the soymilk BP has played an important role in
the UHPH efficiency of microbial inactivation. In this way Donsì,
Ferrari, and Maresca (2006) and Thairi, Makhlouf, Paquin, and Fliss
(2006) reported that UHPH-treatment effectiveness increased at low
initial bacterial concentration.