| 摘要 |
<p>High quality protein products are obtained from whey by subjecting whey to cross flow filtration in microfilter. The whey and retentate are brought to circulate in a circulation path on one side of the membrane area of the microfilter, while whey which has passed the membrane area (permeate) is circulating in a second path on the other side of the membrane area in such a way that the pressure drop over the whole membrane area is kept constant and below 0.8 bar. At that there is obtained a fractionation of milk serum protein such that denatured milk serum protein and fat are retained in the retentate and undenatured milk serum protein passes the membrane into the permeate. After an end treatment there is obtained a whey protein product which is rich in α-lactalbumin and β-lactoglobulin and has a low fat content.</p> |
