However, the starch and cellulose derivatives present some limitations in their application as barrier materials for food packaging paper. Main disadvantages are associated with the rheological behaviour of aqueous solutions, which allows only small coat weight and the sensitiveness to water and microbial attack of the applied films.' Therefore, in recent years numerous researches have aimed to develop new bio-based materials (e.g. chitosan and micro/nanocellulose), which can provide good barrier and strength properties for packaging paper.