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CIELAB colour parameters for raw and sonicated press cake oil
| Sample | L* | a* | b* | ΔE (total colour difference) |
|---|---|---|---|---|
| Unsonicated raw press cake | 3.74 ± 0.01a | 5.82 ± 0.02a | 6.29 ± 0.01a | — |
| Soaked cake with ultrasound 2 min | 3.63 ± 0.02b | 5.48 ± 0.01b | 5.29 ± 0.04b | 1.061 |
Values are means ± SD (n = 3). In each column, different letters indicate significant differences (P‐value < 0.05).
