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Title: Phytase, a new life for an “old” enzyme

item LEI, XIN - Cornell University
item WEAVER, JEREMY - Cornell University
item Mullaney, Edward
item Ullah, Abul
item AZAIN, MICHAEL - University Of Georgia

Submitted to: Annual Review of Animal Biosciences
Publication Type: Review Article
Publication Acceptance Date: 11/1/2012
Publication Date: 1/15/2013
Citation: Lei, X.G., Weaver, J.D., Mullaney, E., Ullah, A.H., Azain, M.J. 2013. Phytase, a new life for an “old” enzyme. Annual Review of Animal Biosciences. 1:283-309.

Interpretive Summary:

Technical Abstract: Phytase represents a group of phosphohydrolytic enzymes that initiate stepwise removals of phosphate from phytate. Simple-stomached species such as swine, poultry, and fish require extrinsic phytase to digest phytate: the major form of phosphorus in plant feeds. Consequently, this enzyme is supplemented in diets for these species to decrease their phosphorus excretion, which makes this enzyme one of the most effective and lucrative feed additives. This chapter provides a comprehensive review of evolving course of phytase science and technology. Realistic estimates are given on versatile roles of phytase in animal nutrition, environmental protection, natural phosphorus resource preservation, human nutrition and health, and industrial applications. New biotechnology and existing issues related to developing novel microbial phytases as well as phytase transgenic plants and animals are elaborated. Critical and integrated analyses are targeted on global impact, novel application, and future demand of phytase in promoting animal industry, human health, and societal sustainability.