Figure 4: Purity of α-Lactalbumin obtained from wide pore ultrafiltration experiments conducted using skim milk microfiltrations permeate as feed material. 30, 40 and 100 kD are polyvinyledene fluoride membranes with 30, 40 and 00 kDa molecular weight cut off. 300 kD is Polyehtersulfone membrane with 300 kDa molecular weight cut off. TMP is transmembrane pressure. Bars with same letter are not statistically different (P <0.05).