High-activity phytase granulate

Details High-activity phytase granulate High-activity phytase granulate

C - Chemistry, Metallurgy

12

N

C12N 9/16 (2006.01) A23K 1/165 (2006.01) A61K 38/46 (2006.01) A61K 47/36 (2006.01) C12N 9/14 (2006.01) C12N 9/98 (2006.01) C12P 21/02 (2006.01)

Patent

CA 2292953

A process is disclosed for preparing aqueous phytase-containing liquids involving culturing microorganisms of the genus Aspergillus or Trichoderma in a medium containing assimilable carbon and nitrogen sources (e.g. glucose and ammonium ions), filtering the medium and subjecting the resulting filtrate to ultra-filtration to give an aqueous composition having at least 14,000 FTU/g. This aqueous liquid can be used to prepare granulates that can be incorporated in animal feedstuffs.

L'invention concerne un procédé de préparation de liquides aqueux contenant une phytase, le procédé consistant à cultiver des micro-organismes du genre Aspergillus ou Trichoderma dans un milieu contenant des sources de carbone et d'azote assimilables (par exemple des ions de glucose et d'ammonium), à filtrer le milieu et à soumettre le filtrat obtenu à une ultrafiltration pour obtenir une composition aqueuse possédant au moins 14 000 FTU/g. Ce liquide aqueux peut s'utiliser pour préparer des granulés pouvant être incorporés à des aliments pour animaux.

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