Table 6 Estimation of biodiesel properties
Biodiesel properties | International biodiesel standards | Oleaginous yeasts | Vegetable oils | |||
|---|---|---|---|---|---|---|
EN 14214 (Europe) | ASTM D6751-3 (USA) | NYC-1 consortium | M. caribbica SSA1654 | R. glutinis R4 | Palm oil | |
Long chain saturation factor (LCSF) | N.S | N.S | 4.21 | 3.34 | 2.6 | 7.7 |
Cetane number | Minimum 51 | Minimum 47 | 53 | 52.32 | 53.0 | 61.0 |
Density (g/cm3) | 0.86–0.9 | N.S | N.D | 0.88 | 0.87 | N.S |
Kinematic viscosity (mm2/s) | 3.5–5.0 | 1.9–6.0 | 4.38 | 3.98 | 3.85 | 4.5 |
Iodine value (gI2/100 g) | Maximum 120 | N.s | 95.18 | 92.37 | 90.0 | 57.0 |
Oxidative stability (h) | Minimum 3 | Minimum 6 | 7.85 | 8.3 | 10.02 | 4.0 |
Saponification value (mg KOH/g-oil) | N.S | N.S | 211.4 | 199.4 | 203.3 | N.D |
Degree of unsaturation (%, wt) | N.S | N.S | 96.12 | 95.85 | 95.2 | 64.2 |
Linolenic acid (C18:3) | ≤ 12 | N.S | 4.11 | 4.07 | 4.23 | 0.6 |