US 7,320,876 B2
Phytase-containing animal food and method
Douglas M. Webel, Noblesville, Ind. (US); Donald E. Orr, Jr., Nobelesville, Ind. (US); Frank E. Ruch, Jr., Falmouth, Me. (US); and Xingen Lei, Ithaca, N.Y. (US)
Assigned to Phytex, LLC, Portland, Me. (US); and Cornell Research Foundation, Inc., Ithaca, N.Y. (US)
Filed on Oct. 31, 2002, as Appl. No. 10/284,962.
Claims priority of provisional application 60/335303, filed on Oct. 31, 2001.
Prior Publication US 2003/0206913 A1, Nov. 06, 2003
Int. Cl. A23K 1/165 (2006.01); C12N 9/16 (2006.01)
U.S. Cl. 435—15  [435/196; 435/252.3; 435/320.1; 536/23.2; 426/615; 426/623] 35 Claims
 
1. A method of improving the nutritional value of a foodstuff consumed by a monogastric animal by increasing the bioavailability of phosphate from phytate wherein the foodstuff comprises myo-inositol hexakisphosphate, the method comprising the step of feeding to the animal the foodstuff in combination with less than 1200 units of an E. coli 6-phytase expressed in yeast per kilogram of the foodstuff,
wherein the bioavailability of phosphate from phytate is increased by at least 2-fold compared to the bioavailability of phosphate from phytate obtained by feeding the foodstuff in combination with the same units of a phytase expressed in a non-yeast host cell.