Table 1. Chemical composition of butter serum and whey serum

Index Butter serum Whey serum
Butter serum powder A (%) Butter serum powder B (%) WPC60 (%) WPC70 (%)
Water 1.9 3.3 2.5 1.8
Total fat 27.5 12.5 25.3 20.3
Protein 26.0 28.5 62.5 72.2
Lactose 38.4 46.8 1.2 1.5
Ashes 5.8 7.0 3.0 3.3
WPC, whey protein concentrate.