Figure 3: Purity of α-Lactalbumin obtained from wide pore ultrafiltration experiments conducted using cheddar cheese whey as feed material. La is ╬▒Lactalbumin, PVDF 50 and 100 are polyvinyledene fluoride membranes with 50 and 100 kDa molecular weight cut off. PES 300 is Polyehtersulfone membrane with 300 kDa molecular weight cut off. TMP is transmembrane pressure.