Evaluation of the effects of glycerol and sorbitol concentration and water activity on the water barrier properties of cassava starch films through a solubility approach

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Natural-based plasticizers and biopolymer films: A review (2011, background): “Hydrophilic compounds, such as polyols (GLY and sorbitol) are commonly used in starch films [17,20,33,68, 71,72,74,76,79,82], but some sugars [77,86], surfactants [89,92,93], amino acids and fatty acids [81] could also be employed to improve their mechanical and barrier proper-”
Cassava starch biodegradable films: Influence of glycerol and clay nanoparticles content on tensile and barrier properties and glass transition temperature (2012, unknown): “Some authors consider that the glycerol, a polyalcohol found naturally in a combined form as glycerides in animal and vegetable fats and oils, is the best plasticizer for water soluble polymers (Bertuzzi, Castro Vidaurre, Armanda, & Gottifredi, 2007; Jangehud & Chinnan, 1999; Müller et al., 2008).”