Table 1
Analytical parameters of the investigated moringa oils.
| Analytical parameters investigated/Methods and standards used | Samples investigated | |||
|---|---|---|---|---|
| Mechanical pressing oil | Solvent extracted oil | Mixed crude oil | Mixed purified oil | |
| Specific mass (kg/m3 at 20 °C) (NBR 14065/ASTM D4052) | 909.5 | 907.2 | – | 907.0* |
| Kinematic viscosity (mm2/s at 40 °C) (NBR 10441/ASTM D445) | 43.6 | 39.1 | – | 41.7 |
| Saponification index (mg KOH/g oil) (IAL-2008) | 180.6 | 179.4 | – | – |
| Iodine value (g I2/100g oil) (Wijs /IAL-2008) | 68.9 | 70.7 | – | – |
| Water content (Karl Fischer) (mg/kg) (NBR 11348/ASTM D6304) | 876.6 | 632.0 | – | 630.2 |
| Peroxide index (meq O2/kg oil) (IAL-2008) | 3.3 | 5.4 | 5.2 | nd** |
| Turbidity (NTU at 20 °C) (HachTurbidimeter 2100N) | 64.1 | 12.6 | 31.1 | 2.1 |
| Acidity index (mg KOH/g oil) (IAL-2008) | 8.8 | 20.5 | 18.1 | 0.2 |
* Obtained by the densimeter method NBR 7148; ** nd: not detected with the analytical method used. NBR: Brazilian Standards − Brazil (ABNT − Brazilian Association of Technical Standards); ASTM: American Standards − USA (American Society for Testing and Materials); IAL: Brazilian Standards of Institute Adolfo Lutz (IAL). Source: Pereira et al. (2016b).
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