For the recovery of potato protein, bisulfide is added to the potato sap and then heated and stirred to give the protein to be washed and decanted for drying

摘要

To recover potato protein, as fodder and a foodstuff, bisulfide is added to the potato sap at the rate of 1.5 ml per liter of sap, and the mixture is heated to 38-40degreesC and precipitated at a pH value of 4.0-4.5 to separate the high molecular protein compounds. Through stirring, the components are separated by colors, to be washed in clear water in a ratio of 1:3, decanted and dried.