“…Due to its porous structure, PS can be readily employed as an adsorbent of heavy metal ions (Ma, Liu, Anderson, & Chang, 2015), designing drug delivery systems (Wu et al, 2011) and development of carrier for sensitive additives (Belingheri, Curti, Ferrillo, & Vittadini, 2012). Starch can be modified through various physical (microwave, ultrasound), chemical (solvent exchange), and biological (enzymes) techniques to create honeycomb-like structure of PS (Belingheri, Ferrillo, & Vittadini, 2015;Oliyaei, Moosavi-Nasab, Tamaddon, & Fazaeli, 2019). Among these techniques, the solvent exchange is a common approach for the synthesis of PS that can be carried out through sequential steps of (a) gelatinization of starch, (b) solvent exchange with alcohol, and (c) evaporation of alcohol, which eventually leaves several pores in its structure (Cai, Chen, Hong, Liu, & Yuan, 2013).…”