Table 1: Best range of parameters for Supercritical-CO2 extraction of saponin compound.
1. Particle size, mm | ||
Feedstock | Particle size range, mm | Yield (weight%) |
Monochoria vaginalis | 0.15-0.35 | 0.82 |
Spent tea leaves | 0.15-0.35 | 0.75 |
Furcraea selloa var. marginata | 0.15-0.35 | 0.52 |
2. Pressure, MPa | ||
Feedstock | Pressure range, MPa | Yield (weight%) |
Monochoria vaginalis | 20-25 | 0.82 |
Spent tea leaves | 20-25 | 0.75 |
Furcraea selloa var. marginata | 20-25 | 0.52 |
3. Temperature, ℃ | ||
Feedstock | Temperature range, ℃ | Yield (weight%) |
Monochoria vaginalis | 40-50 | 0.82 |
Spent tea leaves | 40-50 | 0.75 |
Furcraea selloa var. marginata | 40-50 | 0.43 |
4. CO2 Flowrate, ml/min | ||
Feedstock | CO2 flow rate range, ml/min | Yield (weight%) |
Monochoria vaginalis | 5-8 | 0.82 |
Spent tea leaves | 5-8 | 0.75 |
Furcraea selloa var. marginata | 5-8 | 0.52 |