Exemplary embodiments of the disclosure may be drawn to a device having one or more chambers. The one or more chambers may contain immobilized lipase and a phytosterol processing excipient. The device may also include an inlet fluidly connected to one of the one or more chambers, wherein the inlet is configured to receive nutritional formula into one of the one or more chambers. The device may further include an outlet through which nutritional formula is configured to flow after passing through the one or more chambers.