High-activity phytase compositions
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United States of America Patent
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Issued Date -
Mar 10, 2005
app pub date -
Sep 10, 2004
filing date -
Jun 4, 1997
priority date (Note) -
Abandoned
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Abstract
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 optimally can be used to prepare granulates that can be incorporated in animal feedstuffs.
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