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| Sample | SPI (g) | Glycerol (g) | Water (g) | PVA (g)a | HNTs (g) | PTGE (g) |
|---|---|---|---|---|---|---|
| SPI | 3 | 1.5 | 57 | 0 | 0 | 0 |
| SPI/PVA | 3 | 1.5 | 57 | 2.2 | 0 | 0 |
| SPI/PTGE | 3 | 1.5 | 57 | 0 | 0 | 0.3 |
| SPI/HNTs | 3 | 1.5 | 57 | 0 | 0.09 | 0 |
| SPI/HNTs/PVA/PTGE | 3 | 1.5 | 57 | 2.2 | 0.09 | 0.3 |
Notes: aPVA solution (10% (w/w)) was prepared by dissolving PVA in water at 90 °C.
