Treatment of whey
AssigneeStauffer Chemical Company
InventorDonald A. Grindstaff
Life of this patent
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Abstract
Clogging of membranes during whey processing is avoided by pretreating raw acid cheese whey by adjusting the pH to above about 6.5 and separating insoluble solids therefrom. The separated insoluble solids are treated by adding calcium ion, holding at a temperature above about 125.degree. F for at least 1 hour and drying. The resultant dry treated insoluble solids are useful as a substitute for nonfat dried milk in bakery products.
Claims16
A process for pretreating a raw cheese whey feed containing at least 20% acid cheese whey said percent being by weight based on the total weight of said feed and recovering insoluble solids therefrom which process consists essentially of:
- a. adjusting the pH of said raw cheese whey feed to between about 6.5 to about 8.0 by the addition of base, whereby insoluble solids are formed within said raw cheese whey feed;
- b. separating said insoluble solids produced by (a) above from said feed and recovering said insoluble solids as sludge;
- said liquid remaining after said insoluble solids removal also being recovered as a mother liquor;
- and
- c. adding to said insoluble solids obtained by (b) after separation from said feed calcium ion at a concentration between about 0.002 to about 0.010 grams per gram of insoluble solids (dry basis) and heating the mixture to between about 125.degree. F. to 200.degree. F. for at least 1/6 hour.
Dependencies are inferred from the claim text.