Clextral

Maxime Collado

Jean-Marie Bouvier

Alain Brisset

Disclosed is a process in which a viscous initial product having both a temperature of between 5&#xb0; C. and 70&#xb0; C. and a viscosity greater than 100 mPa&#xb7;s is provided, &#x2014;by way of a pump provided upstream of at least one aerator, the viscous initial product is transferred as it is to the at least one aerator in which the viscous initial product is mixed with a gas, injected into the aerator, so as to obtain a liquid foam continuously exiting the aerator, and&#x2014;the liquid foam continuously exiting the at least one aerator is continuously pushed into the inlet of a treatment device which continuously divides and then dries this liquid foam so as to obtain a powdered porous product which has a solids content greater than 90%.

Process and facility for producing a powdered porous product

The invention proposes a method for the production of a porous powder product containing a microorganism, from a liquid concentrate comprising at least one liquid microorganism culture and a carrier composition, the carrier composition comprising at least one carbohydrate and at least one protein, the method comprising the steps of: i) preparing the liquid concentrate to have both a temperature of between and 40&#xb0; C. and a viscosity greater than 150 mPa&#xb7;s; ii) injecting a food grade gas into the prepared concentrate at a pressure greater than 0.3 MPa to intimately incorporate the gas into the liquid concentrate and form a stable foam with a density of between about 0.6 to about 1.2 kg/l; iii) conveying the foam to an atomizing device wherein the pressure of the foam is reduced from 0.3 MPa to atmospheric pressure to provide a partially dried product; and iv) exposing the partially dried product to a drying media to reduce both the moisture content to less than 5% moisture and the water activity to less than 0.25 A, when measured at 20&#xb0; C., and to provide the porous powder product, wherein the temperature of the porous powder product in step (iv) does not exceed 50&#xb0; C.

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Pont-Salomon, France

Maxime Collado