Table 2.
Pearson correlation matrix between canola meal-derived sinapates, total phenolic content and antioxidant activity.
| Canolol | Sinapine | Sinapic Acid | RT-26.6 min | RT-32.4 min | RT-27.38 min | RT-23.81 min | DPPH | FRAP | MIC | TPC | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Canolol | 1 | ||||||||||
| Sinapine | −0.79 *** | 1 | |||||||||
| Sinapic Acid | −0.93 *** | 0.75 *** | 1 | ||||||||
| 26.6 RT | −0.75 *** | 0.93 *** | 0.72 ** | 1 | |||||||
| 32.4 RT | −0.25 | −0.04 | 0.40 | 0.10 | 1 | ||||||
| 27.38 RT | 0.21 | 0.03 | −0.37 | 0.25 | −0.35 | 1 | |||||
| 23.81 RT | 0.00 | 0.29 | −0.19 | 0.46 | −0.42 | 0.85 *** | 1 | ||||
| DPPH | −0.63 ** | 0.63 ** | 0.67 ** | 0.62 * | 0.07 | 0.08 | 0.03 | 1 | |||
| FRAP | −0.83 *** | 0.91 *** | 0.81 *** | 0.81 *** | −0.17 | −0.04 | 0.17 | 0.70 ** | 1 | ||
| MIC | −0.63 ** | 0.80 *** | 0.70 ** | 0.80 ** | −0.05 | 0.07 | 0.17 | 0.70 ** | 0.85 *** | 1 | |
| TPC | 0.75 *** | −0.56 * | −0.91 *** | −0.49 | −0.57 * | 0.62 * | 0.43 | −0.54 * | −0.59 * | −0.51 * | 1 |
DPPH 2,2-Diphenyl-1-picrylhydrazyl, FRAP Ferric reducing antioxidant power, MIC Metal ion chelation, TPC Total phenolic content. RT Retention time, RT-26.6 min, RT-32.4 min, RT-27.38 min, RT-23.81 min refers to unidentified compounds at different RT. *** Very highly significant at p < 0.001, ** Highly significant at p < 0.01, * Significant at p < 0.05.