Table 1.
SSA, particle size (D [3,2] and D [4,3]) and chromaticity parameter (L, a, b, W*, △E, H and C) of MPs after different treatments (T1-T7). Different letters (a-g) indicated significant differences within different MPs.
| Treatments | T1 | T2 | T3 | T4 | T5 | T6 | T7 |
|---|---|---|---|---|---|---|---|
| SSA | 124.025 ± 7.719e | 414.789 ± 54.988c | 369.956 ± 46.181c | 500.100 ± 28.235b | 502.567 ± 82.157b | 586.644 ± 103.748a | 283.160 ± 79.894d |
| D [3,2] | 48.550 ± 3.069a | 14.711 ± 1.953 cd | 16.467 ± 2.234c | 12.031 ± 0.679de | 12.322 ± 2.733de | 10.587 ± 2.317e | 23.180 ± 7.662b |
| D [4,3] | 118.000 ± 11.265bc | 164.311 ± 51.419b | 253.000 ± 180.586a | 30.400 ± 12.586d | 45.778 ± 16.452d | 79.333 ± 89.524 cd | 62.447 ± 30.578 cd |
| L | 77.574 ± 0.439b | 77.246 ± 0.757bc | 76.664 ± 0.648c | 80.610 ± 0.675a | 77.640 ± 0.249b | 77.206 ± 0.796bc | 76.954 ± 0.576bc |
| a | −2.346 ± 0.059d | −1.730 ± 0.050b | −6.450 ± 0.065 g | −1.462 ± 0.084a | −5.556 ± 0.057e | −2.189 ± 0.068c | −6.255 ± 0.142f |
| b | 0.296 ± 0.158f | 0.911 ± 0.233e | 18.210 ± 0.336a | 1.429 ± 0.218d | 14.600 ± 0.444b | 0.812 ± 0.513e | 11.155 ± 0.450c |
| W* | 77.449 ± 0.438b | 77.161 ± 0.749c | 69.700 ± 0.466f | 80.501 ± 0.660a | 72.719 ± 0.090e | 77.080 ± 0.778c | 73.635 ± 0.355d |
| △E | 11.189 ± 0.430d | 11.504 ± 0.731d | 22.815 ± 0.358a | 8.260 ± 0.624e | 19.172 ± 0.223b | 11.589 ± 0.739d | 17.298 ± 0.206c |
| C | 2.369 ± 0.062d | 1.968 ± 0.071f | 19.319 ± 0.322a | 2.054 ± 0.131e | 15.622 ± 0.417b | 2.387 ± 0.143d | 12.791 ± 0.401c |