Biofactories for the Production of Recombinant Phytases and their Application in the Animal Feed Industry.

Background: Phytases are enzymes capable of degrading phytic acid and are used in animal feed supplementation in order to improve digestibility through the release of minerals such as phosphorus. Recent inventions show interest in production and optimization of recombinant phytases with biochemical and physicochemical characteristics promising for animal feed industry.

Methods: This review article is focused on relevant patents of promising phytases, together with the commonly used expression systems for their production and tools currently employed to generate new phytases.