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. 2019 Dec 2;2019:1801724. doi: 10.1155/2019/1801724

Table 4.

Effect of HTST pasteurization process and storage time (at 4°C) on protein composition (±SD) of goat milk.

ST$ Milk HTST pasteurization treatments (temperature-time)
Protein 72°C 75°C 81°C
15 s 25 s 15 s 25 s 15 s 25 s
0 Casein (w/w%) 2.64 ± 0.05 2.64 ± 0.07 2.63 ± 0.14 2.65 ± 0.22 2.64 ± 0.1 2.62 ± 0.52
Whey protein (TP%) 17.28 17.00 17.28 17.00 15.80 14.91
WPD (%) 0 0 0 1.63 8.23 13.45
2 Casein (w/w%) 2.61 ± 0.02 2.59 ± 0.01 2.56 ± 0.03 2.58 ± 0.01 2.48 ± 0.01 2.48 ± 0.00
Whey protein (TP%) 17.70 16.52 16.42 14.84 15.29 13.17
WPD (%) 0 4.11 4.70 14.00 11.26 23.60
3 Casein (w/w%) 2.48 ± 0.02 2.5 ± 0.1 2.49 ± 0.1 2.49 ± 0.01 2.45 ± 0.03 2.43 ± 0.02
Whey protein (TP%) 15.85 14.73 14.46 14.46 13.56 11.94
WPD (% ) 8.00 14.54 16.07 16.07 21.27 30.73
4 Casein (w/w%) 2.48 ± 0.01 2.45 ± 0.01 2.43 ± 0.01 2.45 ± 0.01 2.24 ± 0.02 2.32 ± 0.02
Whey protein (TP%) 11.50 11.25 11.61 11.00 11.80 8.04
WPD (%) 33.03 34.68 32.60 36.35 31.48 53.33

$ST = Storage time (weeks) at 4°C; Whey protein (TP%) = Whey protein as % total protein; WPD = Whey protein denatured (%); 0 = immediately after pasteurization (IAP).