Table 1.
Particle size distribution and average particle size in mass, Dw Eq. (1), of tested maize flours
| Fraction (μm) | Dp (μm) | Mass fraction (%) | |||||
|---|---|---|---|---|---|---|---|
| YM200 | WM200 | PM200 | YM500 | WM500 | PM500 | ||
| >500 | 500.0 | – | – | – | 0.6 | 1.0 | 0.4 |
| 250–500 | 375.0 | – | – | – | 21.7 | 41.1 | 23.2 |
| 200–250 | 225.0 | 2.2 | 2.1 | 2.3 | 10.8 | 16.1 | 13.6 |
| 125–200 | 162.5 | 12.3 | 27.0 | 23.4 | 19.2 | 22.3 | 22.8 |
| 80–125 | 102.5 | 34.9 | 50.3 | 28.0 | 19.9 | 9.3 | 13.3 |
| 63–80 | 71.5 | 29.8 | 11.7 | 6.5 | 12.2 | 5.0 | 9.1 |
| 40–63 | 51.5 | 13.5 | 8.0 | 27.7 | 11.8 | 4.6 | 10.2 |
| <40 | 20.0 | 7.4 | 0.9 | 12.0 | 3.8 | 0.6 | 7.4 |
| Dw (μm) | 90 | 113 | 93 | 176 | 250 | 184 | |
Standard deviations of mass fraction were ±0.10
yellow (YM), white (WM) and purple (PM) maize flours obtained milling dried kernels with sieves of 200 (200) and 500 μm (500). Dp is the is the arithmetic mean diameter of the fraction