Process for producing lactose-free milk

Details Process for producing lactose-free milk Process for producing lactose-free milk

A - Human Necessities

23

C

A23C 9/12 (2006.01) A23C 9/142 (2006.01)

Patent

CA 2734557

The invention concerns a process for producing lactose-free or substantially lactose-free milk, preferably without addition of water, and the product obtainable by the process. The process comprises the steps of a) Ultrafiltration of original milk to obtain a first permeate and a first retentate, b) Nanofiltration of said first permeate to obtain a second permeate and a second retentate, c) Mixing said first retentate with said second permeate to obtain a mixture, and d) Hydrolysing remaining lactose in said mixture to obtain a hydrolysed milk. The process provides a lactose-free product with the taste of the original milk.

Cette invention concerne un procédé de production de lait sans lactose ou sensiblement exempt de lactose, de préférence sans adjonction d'eau. Elle concerne le produit résultant de ce procédé. Le procédé comprend les étapes: a) d'ultrafiltration du lait brut afin d'obtenir un premier perméat et un premier retentat; b) de nanofiltration dudit premier perméat afin d'obtenir un second perméat et un second retentat; c) de mélange du premier retentat et du second perméat afin d'obtenir un mélange; et d) d'hydrolyse du lactose restant dans ledit mélange afin d'obtenir un lait hydrolysé. Le procédé de l'invention donne un produit sans lactose ayant le goût du lait brut.

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