Coated enzyme granules

Details Coated enzyme granules Coated enzyme granules

C - Chemistry, Metallurgy

12

N

C12N 9/98 (2006.01) C11D 3/386 (2006.01)

Patent

CA 2205610

The present invention relates to coated enzyme granules and a method of preparing coated enzyme granules including the steps of (i) contacting enzyme granules with a coating material which is either (a) a non-aqueous liquid or aqueous emulsion thereof, or (b) an unctuous mixture comprising at least one liquid as in (a) having dissolved therein a second component having a melting point in the range 30 to 90 ~C, said contacting being carried out so as to provide a substantially uniform coating on said granules of said coating material at less than 25 wt.%, and (ii) contacting the granules formed in step (i) with an anti-caking agent so as to obtain free-flowing granules having a dust figure of less than 2 µg as determined by the Heubach attrition test.

La présente invention concerne des granules d'enzymes enrobés ainsi qu'un procédé de préparation qui consiste (i) mettre les granules d'enzymes en contact avec un matériau d'enrobage qui est soit (a) un liquide non aqueux ou une émulsion aqueuse de celui-ci, soit (b) un mélange onctueux comprenant au moins un liquide, comme dans (a), dans lequel on a dissous un second constituant possédant un point de fusion de l'ordre de 30 à 90 ~C, cette mise en contact étant effectuée de manière que les granules soient enrobés de façon sensiblement uniforme à l'aide du matériau d'enrobage, lequel représente moins de 25 % en poids du poids du granule, et (ii) à mettre les granules formés dans l'étape (i) en contact avec un agent anti-agglutinant de manière que des granules fluides dont la quantité de poussières en chiffre, telle que déterminée par le test d'attrition de Heubach, est inférieure à 2 µg, soient produites.

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