Potential application of microbial phytase in aquaculture
Journal Title: Extreme Life, Biospeology & Astrobiology - International Journal of the Bioflux Society - Year 2011, Vol 3, Issue 1
Abstract
Phytases are histidine acid phosphatases that catalyze the hydrolysis of phytic acid to inorganic phosphorus and myo-inositol phosphates. The phosphorus that is being released is used in various metabolic processes. These enzymes are able to promote the growth of animals and plants as well as increase the nutritional value of feedstuffs through dephytinization. Phytases are widespread in nature because they are found in animals, plants and microorganisms. This paper discusses the different microbial phytases that have been characterized and their beneficial roles in aquaculture. In order to be incorporated in the feed, microbial phytases must have the ability to withstand high temperatures during processing, and to be stable in the gastrointestinal tract of the fish, the enzymes must be active at low pH levels. The various effects of microbial phytases on the bioavailability of phosphorus in fish, on growth performance, on the immune responses, on the excretion of phosphorus and on the environment are also reviewed.
Authors and Affiliations
Christopher Caipang, Rande Dechavez, Mary Apines-Amar
Keywords
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