Distribution of protein

Protein Fraction	Treatments¹
Protein Fraction	<300	300-750	750-1000	>1000
α-lactalbumin	7.88 ± 1.46^a	7.26 ± 0.57^a	7.89 ± 0.65^a	6.97 ± 0.80^a
β-lactoglobulin	17.64 ± 1.39^a	17.34 ± 1.29^a	16.77 ± 0.46^a	15.58 ± 1.55^a
β-casein	31.85 ± 1.37^a	27.08 ± 1.68^b	22.1 ± 1.30c	16.35 ± 2.03^d
αs-casein	19.00 ± 1.57^a	18.08 ± 1.63^a	18.58 ± 0.90^a	13.00 ± 1.25^b
κ-casein	5.54 ± 1.52^a	5.19 ± 0.71^a	5.27 ± 1.27^a	3.47 ± 1.22^b

^a-dMeans within a row with different superscripts differ (P<0.05)
Values are given as means ± standard deviation
¹Treatments: <300=Tank milk with somatic cell count of <300000 cells/ mL; 300-750=Tank milk with somatic cell count of 300000 to 750000 cells/mL; 750-1000=Tank milk with somatic cell count of 750000 to 1000000 cells/mL; >1000=Tank milk with somatic cell count of >1000000 cells/mL

Table 3: Distribution of protein fraction from the soluble phase of tank milk with different levels of somatic cells after ultracentrifugation count.