Table 2.
Stock/blend | FFA (%) | PV (meq/kg) | Soap content (ppm) | Oxidizability | |||
---|---|---|---|---|---|---|---|
NIE | IE | NIE | IE | NIE | IE | ||
Base stocks | |||||||
Sunflower oil | 0.04 ± 0.003 | ND | 1.1 ± 0.02 | ND | 0 | ND | 0.556 |
Palm stearin | 0.03 ± 0.002 | ND | 5.5 ± 0.04 | ND | 0 | ND | 0.086 |
Blends (Palm stearin: Sunflower oil) | |||||||
10:90 | 0.04 ± 0.005b | 0.16 ± 0.032a | 2.0 ± 0.01a | 0.9 ± 0.1b | 0 | 19.43 ± 3.7 | 0.509 |
30:70 | 0.05 ± 0.003b | 0.13 ± 0.011a | 2.6 ± 0.03a | 1.0 ± 0.2b | 0 | 22.83 ± 4.2 | 0.415 |
50:50 | 0.04 ± 0.012b | 0.10 ± 0.024a | 3.7 ± 0.04a | 0.6 ± 0.3b | 0 | 19.78 ± 2.8 | 0.321 |
Mean (n = 3) values ± SD with different lower case letters represents the significant effect of interesterification in the same blend at p < .05.
Abbreviations: FFA, free fatty acids; IE, interesterified; ND, not determined; NIE, noninteresterified; PV, peroxide value.