Phytase

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Phytase is an enzyme that can break down the undigestible phytic acid (phytate) part found in grains and oil seeds and thus release digestible phosphorus and calcium.

Phytase is used as an animal feed supplement to enhance the nutritive value of plant material by liberation of inorganic phosphate from phytic acid (myo-inositol hexakisphosphate) and, thereby, to reduce environmental phosphorus pollution.

Phytase can be purified from transgenic microbes. Phytase has been produced recently in transgenic canola, alfalfa and rice plants. Phytase can also be massively produced through cellulosic biomass fermentation using genetically modified (GM) yeast.

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