Table 6.
Main variable parameters for the fabrication of gelatin-based microcapsule or nanocapsules using spray drying technique.
| Solvent | Polymer % (w/v) | Inlet T (°C) | Outlet T (°C) | Flow Rate (mL/min) | Pressure of Spray Air (kg/cm2) | Surfactant % (w/v) | Crosslinker % | Ref. |
|---|---|---|---|---|---|---|---|---|
| Water | 0.004 | 140 | N. d. | 3 | N. d. | Tween 80, 0.05% | DCMC, 4.5 × 10−4% | [92] |
| 2 | 130 | 80 | 10 | 5 | HPMC, 2.00% | – | [131] | |
| Water-Ethanol | 4 | 100–120 | N. d. | 5 | 4 | SLS, 0.60% | – | [133] |
| 5.7 | 105 | N. d. | 5 | 4 | SLS, 0.60% | GA, 25% | [134] | |
| 5.7 | 105 | N. d. | 5 | 4 | SLS, 0.60% | – | [130] | |
| 8 | 120 | 65–70 | 7 | 4 | – | – | [132] | |
| 13.33 | 105 | N. d. | 5 | 5 | SLS, 0.60% | – | [135] | |
| Water-Methanol | 0.25 | 100 | 65 | 5 | 4 | – | – | [129] |