Water Activity and Citri-Fi

When Citri-Fi is used at recommended levels to bind added water into a formula, the water activity (“aw”) of the product to which Citri-Fi is added should remain similar to the aw of the control.  However, if the aw increases, then the water to Citri-Fi ratio should be decreased. If the aw decreases, then the water to Citri-Fi ratio can be left the same or increased, your choice. The following graph compares the water activity of a control muffin to a reduced fat muffin that incorporates one part Citri-Fi to seven parts water to partially replace 25% of the original formula oil.