Fig. 9 illustrates results from these two studies, where the effect of specific surface area of non-fat particles on oil migration is shown.
A larger specific surface area corresponds to a higher migration rate of BrTAGs. Thus, a higher amount of non-fat particles with a larger specific surface area appear to increase the rate of migration and fat bloom development.
These findings further support that the amount of non-fat particles together with the specific surface area of the non-fat particles affects the migration rate of liquid filling fat into the chocolate shell, and thus fat bloom development is also affected.