Food or edible material: processes – compositions – and products – Products per se – or processes of preparing or treating... – Protein – amino acid – or yeast containing
Reexamination Certificate
2005-02-15
2005-02-15
Prouty, Rebecca E. (Department: 1652)
Food or edible material: processes, compositions, and products
Products per se, or processes of preparing or treating...
Protein, amino acid, or yeast containing
C435S018000, C435S196000, C435S252300, C435S195000, C435S320100, C536S023200, C530S350000
Reexamination Certificate
active
06855365
ABSTRACT:
A purified and modified phytase enzyme fromEscherichia coliK12 appA phytase is provided. The enzyme has phytase activity and improved thermal tolerance as compared with the wild-type enzyme. In addition, the enzyme has improved protease stability at low pH. Glycosylation of the modified phytase provided a further improved enzyme having improved thermal tolerance and protease stability. The enzyme can be produced from native or recombinant host cells and can be used to aid in the digestion of phytate where desired. In particular, the phytase of the present invention can be used in foodstuffs to improve the feeding value of phytate rich ingredients.
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Barton Nelson Robert
Garrett James B.
Gray Kevin A.
Kretz Keith A.
Mathur Eric J.
Diversa Corporation
Morrison & Foerster / LLP
Prouty Rebecca E.
Ramirez Delia M.
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