The difference in backscattering measured from day 1 to day 28 for the BP sample was 18% and, respectively, 13% for pasteurized soymilk. These results indicated, as expected high concentration of particles in the bottom of BP samples. In the same way, backscattering values of pasteurized soymilk was 10% higher than UHPH soymilk at day 1 and 15% at day 28 of analysis. On the other hand, UHPH soymilks showed a difference between first and last day of analysis of just 7.6%,