Many researchers have tried to develop slow-release (also
known as time-release) devices for food antimicrobial packaging
(Joerger, 2007; Quintavalla & Vicini, 2002). The idea of this design
is using the packaging material as a reservoir matrix and a delivery
vehicle for efficient migration of the agent(s) from the packaging
matrix to the surface of the product at a specific slow rate over a
prolonged period. In this case, the concentration(s) of the agent(s)
can be maintained where they are needed, and the activity can also
be extended.