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US 8,986,768 B2Granted
Low-lactose and lactose-free milk product and process for production thereof
AssigneeValio Ltd.
InventorsReetta Tikanmäki, Harri Kallioinen
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Abstract
The invention relates to a low-lactose and a lactose-free milk product and to a process for the production thereof. The lactose in the milk raw material is hydrolyzed, proteins, minerals and sugars are separated into different fractions by the membrane technique, and a low-lactose or a lactose-free milk product is composed from the fractions. The invention provides a milk product, the water therein originating from the original milk raw material. In addition, useful by-products are produced in the process.
Claims7
A process for the production of a lactose-free or a low-lactose milk product, the process comprising
- a) hydrolyzing the lactose in a milk raw material, thus obtaining a hydrolyzed milk raw material,
- b) ultrafiltrating (UF) the hydrolyzed milk raw material to concentrate proteins into an UF retentate and to obtain an UF permeate containing sugars,
- c) nanofiltrating (NF) the UF permeate to separate sugars into a NF retentate and minerals into a NF permeate,
- d) composing the lactose-free or low-lactose milk product from the ultrafiltration retentate obtained in step b) and the nanofiltration permeate obtained in step c), substantially without the addition of water,
- e) optionally, concentrating the product obtained in step d) into a concentrate or a powder.
2 more elements
Dependencies are inferred from the claim text.