Performance of Seven Commercial Phytases in an in Vitro Simulation of Poultry Digestive Tract

Menezes-Blackburn, Daniel and Gabler, Stefanie and Greiner, Ralf (2015) Performance of Seven Commercial Phytases in an in Vitro Simulation of Poultry Digestive Tract. Journal of Agricultural and Food Chemistry, 63 (27). pp. 6142-6149. ISSN 0021-8561

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The aim of,this study was to compare the biochemical, properties of seven commercially, available phytase products as well as their catalytic performance in an in vitro simulation of the digestive tract of poultry. Their enzymatic properties relevant with respect to phytate dephosphorylation in the digestive tract of birds were determined under identical assay conditions. All phytase-products included in the study showed an acid pH optimum of activity and were capable of releasing the organically bound phosphate from phytate during the in vitro simulation. However, their overall biochemical properties and relative catalytic performances were remarkably different The in vitro degradation system was considered as a simple and useful tool to evaluate the suitability of a phytase to be used as a feed supplement. Although relevant factors such as dietary P levels, intestinal phytase, and P absorption ate not implemented in the system, this approach might help to reduce the number of feeding trials necessary in the, search for a better Suited phytase for animal feeding application.

Item Type:
Journal Article
Journal or Publication Title:
Journal of Agricultural and Food Chemistry
Uncontrolled Keywords:
?? in vitro degradation systemphytasephytate dephosphorylationphosphorus availabilitymicrobial originsescherichia-colipeniophora-lyciipurificationphosphateappaphyageneral agricultural and biological sciencesgeneral chemistryagricultural and biological scienc ??
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Deposited On:
30 Jan 2017 15:52
Last Modified:
16 Jul 2024 10:13