“…For the production of ODFs, pullulan is used due to its good filmforming properties; however, pullulan has a high cost, so it is usually blended with synthetic, semi-synthetic, and natural polymers to decrease cost and improve other properties. Literature shows pullulan ODFs blended with HPMC [37,47,48], pectin [47,49], maltodextrin [50], polyvinylpyrrolidone (PVP) [51], trehalose [52] and okra biopolymer [48]. Also, fillers such as cellulose nanofibers (CNF) were proposed to improve the compatibility, and tensile strength of pullulan/HPMC blended ODFs [37].…”