Water solubilities of cassava and tree cassava biodegradable films are shown in table 2, values ranged from
(23.0 ± 0.5) % to (32.1 ± 1.5) % for cassava films and from (19.3 ± 0.5) % to (24.7 ± 0.7) for tree cassava
films. The increase of glycerol in the formulation of the film promoted solubility thereof in water; this is
more marked with cassava films. Regardless of the glycerol content, tree cassava films presented better WS
values.