Table 1.
Experimental conditions to corn, cassava and chitosan based films preparation
| Formulation | Corn starch (g/ 100 mL) | Cassava starch (g/ 100 mL) | Glycerol (g/ 100 mL) | Water (mL) | Chitosan (g) | Chitosan coating (mL) |
|---|---|---|---|---|---|---|
| Corn starch film (M) | 3 | – | 0.9 | 96.1 | – | – |
| Cassava starch film (C) | – | 3 | 0.9 | 96.1 | – | – |
| Chitosan film (Q) | – | – | – | – | 0.5 | – |
| Corn starch–chitosan blended film (MQ) | 3 | – | 0.9 | 96.1 | 0.5 | – |
| Cassava starch–chitosan blended film (CQ) | – | 3 | 0.9 | 96.1 | 0.5 | – |
| Corn starch film coated with chitosan (EM) | 3 | – | 0.9 | 96.1 | – | 5 |
| Cassava starch film coated with chitosan (EC) | – | 3 | 0.9 | 96.1 | – | 5 |
| Corn starch film coated with crosslinked chitosan (ERM) | 3 | – | 0.9 | 96.1 | – | 5 |
| Cassava starch film coated with crosslinked chitosan (ERC) | – | 3 | 0.9 | 96.1 | – | 5 |
In MQ and CQ formulations 10 mL of 1% (v/v) lactic acid solution was added to the filmogenic solution after gelatinization to ensure an acidic pH