Table 1. Size distribution of raw and agglomerated WPI-fortified SMP particles with different SMP/WPI ratios
Sample | | D[3,2] (μm) | Dv10 (μm) | Dv50 (μm) | Dv90 (μm) | Span |
Raw powder | WPI | 61.6±0.59a | 29.2±0.35a | 108.8±1.53a | 218±2.52a | 1.73±0.01a |
SMP | 63.0±0.47a | 33.5±0.15b | 87.7±0.60b | 211±4.62ab | 2.02±0.04b |
SMP9/WPI1 | 62.4±0.21a | 33.1±0.15bc | 90.8±0.35b | 203±1.73ab | 1.87±0.02c |
SMP8/WPI2 | 62.7±0.49a | 32.5±0.20bc | 95.6±0.93c | 210±2.00ab | 1.86±0.01c |
SMP7/WPI3 | 61.9±0.58a | 31.7±0.32c | 97.1±1.06c | 210±2.08ab | 1.84±0.01c |
Agglomerated powder | SMP | 130.7±2.31b | 73.6±1.21d | 169.3±3.06d | 345±7.55c | 1.61±0.02d |
SMP9/WPI1 | 115.7±1.53c | 66.3±0.91e | 159.7±2.31e | 322±6.35d | 1.60±0.01d |
SMP8/WPI2 | 103.3±0.58d | 59.3±0.21f | 151.3±1.53f | 306±2.52e | 1.63±0.01d |
SMP7/WPI3 | 90.7±1.59e | 52.7±0.76g | 136.7±1.15g | 269±2.00f | 1.58±0.01d |
Values are the means of three measurements±SD.
Mean values in the same line with different letters are significantly different (p<0.05).
The SMP (skim milk powder) was mixed with WPI (whey protein isolate) at different ratios of 9:1 (SMP9/WPI1), 8:2 (SMP8/WPI2), and 7:3 (SMP7/WPI3).