Non-settling hydrolyzed whey permeate concentrate and related methods and nutritional compositions
The present invention includes a method of producing non-settling hydrolyzed whey permeate with an enzyme, the non-settling hydrolyzed whey permeate concentrate, and nutritive additives and foods made therefrom.
1. A method of producing a non-settling hydrolyzed whey permeate with an enzyme, the method comprising the steps:
subjecting the whey permeate having an initial solids content in the range of from about 15 to about 25 percent solids to hydrolysis by an enzyme, so as to obtain a whey permeate hydrolysate having a degree of hydrolysis above about 65 percent; and
subjecting the whey permeate hydrolysate to evaporation so as to bring the level of solids in the resulting whey permeate hydrolysate concentrate to within a range of from about 60 to about 80 percent solids, so as to obtain a whey permeate hydrolysate concentrate whose settling profile is such that there is no detectable settling over two weeks when stored at 90° F.
2. A method according to claim 1 wherein the whey permeate has an initial solids content in the range of from about 18 to about 20 percent solids.
3. A method according to claim 1 wherein the hydrolysis by the enzyme is carried out for sufficient time to bring about a degree of hydrolysis between about 65 percent and about 80 percent.
4. A method according to claim 1 wherein the evaporation is carried out so as to bring the level of solids in the whey permeate hydrolysate to within a range of from about 70 to about 75 percent solids.
5. A method according to claim 1 wherein the resulting whey permeate hydrolysate concentrate has a viscosity in the range of 90 to 120 centipoise at 90° F.
6. A method according to claim 1 wherein the resulting whey permeate hydrolysate concentrate has a galactooligosaccharides (GOS) content in the range of about 3% to 5% by weight.
7. A method according to claim 1 further comprising adding a drying agent to the whey permeate hydrolysate.
8. The method of claim 7 wherein the drying agent comprises a maltodextrin or a starch.