Table 3 Solubility, total color change and browning index of encapsulated soymilk powder obtained from spray-drying technique and freeze-drying during accelerated temperature of storage.
Day | Solubility (%) | Total color change (∆E) | Browning index (BI) | |||
|---|---|---|---|---|---|---|
35 °C | 45 °C | 35 °C | 45 °C | 35 °C | 45 °C | |
Freeze-drying | ||||||
0 | 85.83 ± 0.02a, A | 85.46 ± 0.07a, B | 8.03 ± 0.02 i | 8.03 ± 0.02h | 0.39 ± 0.01b | 0.39 ± 0.01bc |
1 | 83.82 ± 0.01b, A | 81.31 ± 0.03b, B | 8.43 ± 0.02f, A | 8.58 ± 0.01e, B | 0.38 ± 0.01cd | 0.36 ± 0.02c |
2 | 81.79 ± 0.04c, A | 78.41 ± 0.05c, B | 8.69 ± 0.01d, A | 8.83 ± 0.02d, B | 0.39 ± 0.01b, A | 0.34 ± 0.01d, B |
3 | 77.48 ± 0.01d, A | 76.80 ± 0.03d, B | 8.44 ± 0.03f, A | 8.50 ± 0.02f, B | 0.33 ± 0.01f | 0.33 ± 0.01d |
4 | 77.16 ± 0.01e, A | 76.03 ± 0.02e, B | 8.19 ± 0.01h, A | 8.37 ± 0.01g, B | 0.34 ± 0.02e | 0.35 ± 0.01d |
5 | 75.84 ± 0.01f, A | 74.68 ± 0.02f, B | 8.30 ± 0.01g, A | 8.58 ± 0.03e, B | 0.35 ± 0.01e, A | 0.40 ± 0.01b, B |
6 | 75.04 ± 0.01g, A | 73.73 ± 0.02g, B | 8.89 ± 0.01a | 8.92 ± 0.05c | 0.37 ± 0.01d, A | 0.39 ± 0.01bc, B |
7 | 72.47 ± 0.02h, B | 73.50 ± 0.05g, A | 8.83 ± 0.02b, A | 9.15 ± 0.03a, B | 0.39 ± 0.01bc, A | 0.49 ± 0.01a, B |
8 | 71.85 ± 0.01i, B | 72.20 ± 0.03h, A | 8.73 ± 0.03c, A | 9.07 ± 0.01b, B | 0.40 ± 0.01b, A | 0.47 ± 0.02a, B |
9 | 71.71 ± 0.01j | 71.35 ± 0.01i | 8.59 ± 0.04e, A | 9.17 ± 0.02a, B | 0.43 ± 0.02a, A | 0.50 ± 0.03a, B |
Spray-drying | ||||||
0 | 85.82 ± 0.01a, A | 85.21 ± 0.01a, B | 11.84 ± 0.03a | 11.84 ± 0.03e | 1.69 ± 0.02i, B | 1.81 ± 0.25g, A |
1 | 85.88 ± 0.02b, A | 84.74 ± 0.01b, B | 11.58 ± 0.01b, A | 11.35 ± 0.01g, B | 1.75 ± 0.06h, B | 1.83 ± 0.04g, A |
2 | 84.16 ± 0.01c, A | 82.16 ± 0.01c, B | 11.15 ± 0.03f, B | 11.37 ± 0.02g, A | 1.80 ± 0.21g, B | 1.88 ± 0.24f, A |
3 | 77.51 ± 0.02d, B | 79.73 ± 0.01d, A | 11.26 ± 0.04e, B | 11.98 ± 0.03d, A | 1.87 ± 0.02f, B | 1.96 ± 0.02e, A |
4 | 76.29 ± 0.01e, B | 78.86 ± 0.02e, A | 11.37 ± 0.02d, B | 11.65 ± 0.03f, A | 1.94 ± 0.03e, B | 2.00 ± 0.21d, A |
5 | 75.90 ± 0.03f, B | 78.37 ± 0.07f, A | 11.16 ± 0.02f, B | 12.01 ± 0.03d, A | 2.03 ± 0.02d, B | 2.10 ± 0.05c, A |
6 | 75.16 ± 0.03g, B | 77.88 ± 0.04g, A | 11.27 ± 0.02e, B | 12.30 ± 0.05b, A | 2.08 ± 0.01c, B | 2.14 ± 0.09b, A |
7 | 73.31 ± 0.02h, B | 74.64 ± 0.01h, A | 11.55 ± 0.04b, B | 12.73 ± 0.04a, A | 2.10 ± 0.02c, B | 2.14 ± 0.15b, A |
8 | 73.52 ± 0.02i, A | 72.17 ± 0.03i, B | 11.58 ± 0.02b, B | 12.12 ± 0.02c, A | 2.21 ± 0.01b, B | 2.27 ± 0.01a, A |
9 | 72.48 ± 0.01j, A | 71.71 ± 0.01j, B | 11.42 ± 0.02c, B | 12.13 ± 0.01c, A | 2.28 ± 0.21a | 2.28 ± 0.21a |