Research on the Phytase and its Application

Phytases are enzymes with the capable of hydrolyzing phytic acid(or phytate) to less phosphoiylated myo-inosital derivates and inorganic phosphate.The addition of phytase in feed and food can resolve the antinutrition of phytic acid and increase the bioavailablity of protein and minerals.As a kind of additive in feed of monogastric animals,the application of natural phytase was limited due to its disadvantage.In the article the source of phytase,the gene engineering and the protein engineering of phytase were summarized.