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Content of carboxylic group in pullulan after etherification.
| Sample | Pullulan:CAA Ratio (wt:wt) |
Carboxyl Content (mmol/kg) | Degree of Substitution |
|---|---|---|---|
| Pullulan | 1.0:0.0 | 2.2 ± 0.6 | - |
| CMP1 | 1.0:1.0 | 24.2 ± 1.8 | 0.42 |
| CMP2 | 1.0:1.5 | 38.5 ± 2.2 | 0.66 |
| CMP3 | 1.0:2.0 | 51.2 ± 2.7 | 0.88 |
