The water solubility of the starch/CMC films as a function of CMC content is shown in Fig. 3. Addition of CMC, in all concentrations, decreased the water solubility of starch films. The %TSM was 23.76% for the samples without CMC, which decreased to 21.33 and 20.13% for the films containing 5 and 10% W/W CMC, respectively. However, significant (pb 0.05) decrease in solubility observed at the high levels of CMC. At the level of 20%W/W CMC, the starch films showed the lowest %TSM values at 17.65%.