“…Furthermore, as a biopolymer, PUL is abundant, biodegradable and sustainable for the environment (Cristescu et al, 2004;McKeen, 2017). Recently, the suitability of PUL for OFs has been explored because of its excellent film-forming properties (Prajapati et al, 2018;Shingel, 2004;Sugumaran and Ponnusami, 2017), and it has demonstrated considerable mechanical strength and water-solubility, as well as being odorless and tasteless (Sathya et al, 2018). Moreover, PUL based films exhibit fast disintegration times (Borges et al, 2015b;Prajapati et al, 2018;Vuddanda et al, 2017).…”