Table 1.
High abundance protein content in bovine colostrum at different heat treatments1
| Item | Unheated | Heat30 | Heat60 | Heat90 |
|---|---|---|---|---|
| Whey (mg/mL of skim milk) | ||||
| α-LA | 3.05 | 3.44 (11.34) | 3.67 (16.89) | 3.77 (19.10) |
| β-LG variant A (β-LGA) | 19.11 | 21.03 (9.13) | 22.52 (15.14) | 23.12 (17.34) |
| β-LG variant B (β-LGB) | 4.87 | 5.25 (7.24) | 5.31 (8.29) | 5.30 (8.11) |
| Total α-LA, β-LGA, β-LGB | 27.03 | 29.72 (9.05) | 31.50 (14.19) | 32.20 (16.06) |
| CN (mg/mL of skim milk) | ||||
| β-CN | 31.00 | 30.21 (−2.62) | 33.42 (7.24) | 34.35 (9.75) |
| κ-CN | 14.62 | 14.46 (−1.11) | 15.66 (6.64) | 14.50 (−0.83) |
| Total α-CN | 43.42 | 43.09 (−0.77) | 47.13 (7.87) | 47.14 (7.89) |
| αS1 | 38.56 | 38.29 (−0.71) | 41.82 (7.80) | 41.54 (7.17) |
| αS2 | 4.86 | 4.80 (−1.25) | 5.31 (8.47) | 5.60 (13.21) |
| Total CN | 89.04 | 87.77 (−1.45) | 96.20 (7.44) | 96.00 (7.25) |
1
Values in parentheses show percentage difference between unheated and treatment. Heat treatment of colostrum at 60°C for 0 (unheated), 30 (heat30), 60 (heat60), or 90 (heat90) min.