Evaluation of active agent releasing rate from biopolymer matrix has received outstanding attention over the last years, as they may find promising applications in a broad spectrum of fields, ranging from food packaging to biomedical, pharmaceutical, environmental or agricultural engineering. Some specific examples can be water pollution control or long-term food preservation, where a slow diffusion results of major importance in order to assure a suitable product performance. In that sense, Han (2005) reported that the efficiency of active packaging is based on an antimicrobial releasing rate, from the film to food, which matches with the growth kinetics of the target microorganism.