“…The modification of the films by surfactants not only decreases water vapor permeability [24], but also improve the moisture barrier property of the films [51]. Surface-active agents (surfactants) such as glycerol monostearate [3,5,46], sucrose ester [1,39,47], sodium stearoyl lactate [39], sodium dodecyl sulfate [10], ethyl lauroyl arginate HCl [48,49], Span 20 to 80 [2,5,6,16,50,51], Tween-20 to 80 [11,15,18,20,22,37,41,52] and soy lecithin [2,27,28,31,43,53] (chemical structures indicated in Figure 2) are usually used as modifier for the biopolymer-based films. Surfactants possessed an amphiphilic character that has hydrophilic and hydrophobic properties [12].…”