Table 1.
Physico-chemical properties of the three ximenia oils obtained by different processes, LPO (local production oil), PAO (pseudo artisanal oil), and SEO (Soxhlet extracted oil).
| LPO | PAO | SEO | Comparison Literature | |
|---|---|---|---|---|
| Yield (%, v/w) | 15 | 9.72 ± 0.19 | 61.78 ± 0.53 | 45.7 [18] 54.5 [19] |
| Color | dark yellow | light yellow | light yellow | - |
| Odor | oily | oily | oily | - |
| Physical state at room temperature | liquid | liquid | liquid | - |
| Acid value (mg KOH/g) | 0.48 ± 0.08 | 0.51 ± 0.07 | 0.59 ± 0.07 | 16.13 [18]; 3.4 [17]; 0.14 [16]; 0.56 ± 0.15 [7] |
| % of free fatty acid (FFA) (as oleic acid) | 0.24 ± 0.01 | 0.26 ± 0.02 | 0.30 ± 0.01 | 8.07 [18]; 0.07 [16]; 0.29 ± 0.15 [7] |
| Mean molecular weight (g/mol) | 757.55 | 741.05 | 746.67 | - |
| Saponification value (mg KOH/g) | 221.76 ± 0.10 | 229.67 ± 0.20 | 295.00 ± 0.17 | 178.5 [18]; 182.3 [16]; 179.94 ± 1.69 [7] |
| Iodine value (gI2/100g) | 227.12 ± 0.09 | 281.51 ± 0.11 | 227.12 ± 0.10 | 152.28 [18]; 149.8 [16]; 40.61 ± 0.10 [7] |
| Peroxide value (mEq O2/kg) | 30 ± 0.8 | 29 ± 1 | 31 ± 1.3 | 31.25 [18]; 29.4 [16]; 30.06 ± 0.12 [7] |
| Density (g/cm3) T = 20 °C T = 30 °C T = 35 °C T = 40 °C |
0.914 ± 0.0003 0.910 ± 0.0001 0.909 ± 0.0004 0.908 ± 0.0002 |
nd | nd | 0.912 (30 °C) [18]; 0.974 (15 °C) [17]; 0.9493 ± 00 [7] |
| Viscosity (Pa.s, T = 30 °C) | 0.132 ± 0.001 | - | - |
nd—not determined.