Whey Product and Process
AssigneeFonterra Co-Operative Group Limited
InventorsHongping Gao, Palatasa Havea, Harjinder Singh
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Abstract
The invention provides a process for preparing a dried modified whey protein concentrate. A whey protein solution is used having less than 5% total solids and a combined calcium and magnesium concentration of less than 70 mmol/kg on a dry basis and a pH of 6.0-7.5. It is heated to greater than 70° C. for up to 60 minutes to denature the whey protein. The solution is then cooled to 40° C.-60° C.; and subsequently spray dried. Alternatively a higher initial concentration of total solids may be used in an embodiment where the heating is carried out on a scraped surface heat exchanger.
Claims16
The process for preparing a modified whey protein concentrate comprising:
- (a) providing a whey protein solution having less than 5% total solids and a combined calcium and magnesium concentration of less than 70 mmol/kg on a dry basis and a pH of 6.0-7.5;
- (b) heat treating the solution obtained to greater than 70° C. for up to 60 minutes to denature the whey protein;
- (c) cooling the heated solution to 40° C.-60° C.;
- (d) spray drying to prepare a dried product.
A method for preparing a whey protein concentrate comprising:
- (a) providing a whey protein concentrate comprising of about 10-30% (w/w) total solids, a combined calcium and magnesium concentration of less than 70 mmol/kg, on a dry basis, and a pH of 6.5-7.5;
- (b) heating using a scraped surface heat exchanger (SSHE) to a temperature of greater than 70° C. for up to 60 minutes to denature the whey protein;
- (c) cooling the heated solution to 40-60° C.
Dependencies are inferred from the claim text.