Table 1.
Fatty acid composition, triacylglycerol composition, and calculated iodine value of base stocks and interesterified blends
| Fatty acids (%) | Base stocks | Blends (palm stearin: sunflower oil) | ||||
|---|---|---|---|---|---|---|
| Palm stearin | Sunflower oil | 10:90 | 30:70 | 50:50 | ||
| 16:0 | 52.9 ± 0.06 | 7.32 ± 0.03 | 11.87 ± 0.04 | 20.97 ± 0.02 | 30.11 ± 0.03 | |
| 18:0 | 6.1 ± 0.03 | 4.21 ± 0.01 | 4.38 ± 0.02 | 4.76 ± 0.02 | 5.16 ± 0.03 | |
| 18:1 | 30.1 ± 0.05 | 32.54 ± 0.05 | 32.30 ± 0.02 | 31.81 ± 0.04 | 31.30 ± 0.05 | |
| 18:2 | 7.8 ± 0.02 | 54.62 ± 0.07 | 49.90 ± 0.03 | 40.55 ± 0.02 | 31.22 ± 0.02 | |
| 18:3 | 0.1 ± 0 | 0.20 ± 0.03 | 0.19 ± 0.02 | 0.16 ± 0.01 | 0.15 ± 0.03 | |
| TFA | 0.6 | 0.2 | 0.16 | 0.26 | 0.36 | |
| SFA | 60.8 | 11.53 | 16.26 | 25.75 | 35.26 | |
| USFA | 38.60 | 87.56 | 82.55 | 72.78 | 63.03 | |
| PUFA | 7.9 | 54.82 | 50.12 | 40.74 | 31.36 | |
| USFA/SFA | 0.63 | 7.59 | 5.07 | 2.82 | 1.78 | |
| PUFA/SFA | 0.13 | 4.75 | 3.08 | 1.58 | 0.89 | |
| Calc. IV | 39.7 | 127.40 | 126.63 | 125.09 | 123.55 | |
| Triacylglycerol composition (%)[Link] | ||||||
| OOO | NIE | 2.00 | 3.00 | 2.90 | 2.70 | 2.5 |
| IE | 3.37 | 3.21 | 3.06 | |||
| OLO | NIE | 1.00 | 11.00 | 10.00 | 8.00 | 6.00 |
| IE | 15.61 | 12.30 | 9.17 | |||
| LLL | NIE | 0 | 27.20 | 24.48 | 19.04 | 13.60 |
| IE | 12.42 | 6.66 | 3.04 | |||
| LOL | NIE | 3.00 | 29.20 | 26.58 | 21.34 | 16.10 |
| IE | 24.12 | 15.69 | 9.15 | |||
| POO | NIE | 17.50 | 3.50 | 4.90 | 7.70 | 10.50 |
| IE | 3.71 | 6.37 | 8.84 | |||
| SOO | NIE | 1.00 | 1.10 | 1.09 | 1.07 | 1.05 |
| IE | 1.37 | 1.45 | 1.51 | |||
| PLL | NIE | 0.70 | 9.60 | 8.78 | 9.93 | 5.15 |
| IE | 8.86 | 10.35 | 8.80 | |||
| PLO | NIE | 5.00 | 10.00 | 9.50 | 8.50 | 7.50 |
| IE | 11.48 | 16.23 | 17.65 | |||
| POP | NIE | 33.50 | 0.50 | 3.80 | 10.40 | 17.00 |
| IE | 1.36 | 4.20 | 8.51 | |||
| POS | NIE | 5.50 | 0.40 | 0.91 | 1.93 | 2.95 |
| IE | 1.00 | 1.91 | 2.91 | |||
| PLP | NIE | 7.50 | 0.60 | 1.29 | 2.67 | 4.05 |
| IE | 2.10 | 5.35 | 8.49 | |||
| PPP | NIE | 18.70 | 0.80 | 2.59 | 6.17 | 9.75 |
| IE | 0.16 | 0.92 | 2.73 | |||
| PPS | NIE | 3.60 | 0.40 | 0.72 | 1.36 | 2.00 |
| IE | 0.18 | 0.63 | 1.40 | |||
| S3 | NIE | 22.90 | 1.20 | 3.37 | 7.71 | 12.05 |
| IE | 0.35 | 1.55 | 4.13 | |||
| U3 | NIE | 6.00 | 70.40 | 63.96 | 51.08 | 38.02 |
| IE | 55.92 | 37.96 | 24.48 | |||
| U2S | NIE | 24.20 | 24.20 | 24.20 | 24.20 | 24.20 |
| IE | 25.40 | 34.48 | 36.90 | |||
| S2U | NIE | 46.50 | 1.50 | 6.00 | 15.00 | 24.00 |
| IE | 4.49 | 11.49 | 19.96 | |||
Values are shown as mean ± standard deviation.
Abbreviations: Calc. IV, calculated iodine value; IE, interesterified; NIE, noninteresterified; PUFA, polyunsaturated fatty acids (sum of C18:2 and C18:3); S2U, disaturated–monounsaturated; S3, trisaturated; SFA, saturated fatty acids (sum of C12:0, C14:0, C16:0, and C18:0); TFA, transfatty acids; U2S, monosaturated–diunsaturated; U3, triunsaturated; USFA, unsaturated fatty acids (sum of C18:1, C18:2, C18:3, and TFA).