Societe D'assistance Technique Pour Produits Nestle S.a.

Michel Chaveron

Ernest Badertscher

Valentin Wenner

Jaak-Juri Sihver

Hubert Duperrex

A process for the treatment of milk serum in order to obtain a demineralized milk serum, which comprises subjecting the milk serum, in a clarified and skimmed state, to electrodialysis, and then to ion exchange with the aid of a strong cation exchange resin in the H.sup.+ cycle and a weak anion exchange resin in the OH.sup.- cycle.

Demineralization of whey

An apparatus for carrying out the process for solubilizing a suspension of casein in powder form in an aqueous medium, the casein suspension containing at most 270 g of casein per liter of aqueous medium, which comprises leaving the casein suspension to age for at least 10 minutes, after which a solubilizing agent is progressively added to this suspension until a homogeneous solution is obtained. Application to acid casein, the solubilizing agent being an alkaline agent. Application to phosphocalcic and rennet caseins, the solubilizing agent being a calcium-complexing agent.

Solubilization of casein

A process for the continuous production of casein and caseinates, which comprises destabilizing a colloidal solution with the composition of a skimmed milk and converting it into a mixture of curd and serum, separating the curd from the serum, introducing the curd in the form of grains into a stream of washing liquid, passing the mixture of curd grains and washing liquid under turbulent conditions through at least one tube, and separating the curd from the washing liquid.

Production of casein and caseinates

A process for solubilizing a suspension of casein in powder form in an aqueous medium, the casein suspension containing at most 270 g of casein per liter of aqueous medium, which comprises leaving the casein suspension to age for at least 10 minutes, after which a solubilizing agent is progressively added to this suspension until a homogeneous solution is obtained. Application to acid casein, the solubilizing agent being an alkaline agent. Application to phosphocalcic and rennet caseins, the solubilizing agent being a calcium-complexing agent. An apparatus for carrying out this process.

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Vevey, Switzerland

Michel Chaveron