Abstract
The nutritional availability of phosphate (P) from cereal grains is restricted because a high percentage (60–80%) of the total P content is stored as phytic acid (myo-inostol hexakisphosphate), which can not be efficiently digested by monogastric animals (Raboy, 1990). As a consequence, additional phosphate and/or phytases have to be supplied to the fodder. Furthermore, environmental problems arise when undigested phytate is released with animal manure. Microbial degradation of excreeted phytate then increases phosphate levels in the environment, which leads to eutrophication of freshwater reservoirs.
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References
Engelen, A.J., Van der Heeft, F.C., Randsdorp, P.H.G., and Smit, E.L.C. (1994) Simple and rapid determination of phytase activity. J. AOAC International 77, 760–764.
Lim, P.E. and Tate, M.E. (1973) Properties of phytase fractions F1 and F2 from wheat bran and the myo-inositol phosphates produced by fraction F2. Biochim. Biophys. Acta, 302, 316–328.
Mayr, G.W. (1988) A novel metal-dye detection system permits picomolar-range h.p.l.c. analysis of inositol polyphosphates from non-radioactively labelled cell or tissue specimens. Biochem. J. 254, 585–591.
Murphy, J. and Riley, J.P. (1962) A modified single solution method for the determination of phosphate in natural waters. Anal. Chim. Acta 27, 31–36.
Raboy, V. (1990) Biochemistry and genetics of phytic acid synthesis, in D.J. Morre, W.F. Boss and F.A. Loewus (eds.), Inositol metabolism in plants, John Wiley-Liss & Sons, Inc., New York. pp. 55–76.
Rasmussen, S.K. and Hatzack, F. (1998) Identification of two low-phytate barley (Hordeum vulgare L.) grain mutants by TLC and genetic analysis. Hereditas 129, vol. 2, 107–112.
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© 1999 Springer Science+Business Media Dordrecht
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Hatzack, F., Johansen, K.S., Rasmussen, S.K. (1999). Low Phytic Acid Mutants and High Phytase Crops: Two Strategies to Improve the Availability of Phosphate. In: Gissel-Nielsen, G., Jensen, A. (eds) Plant Nutrition — Molecular Biology and Genetics. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-2685-6_16
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DOI: https://doi.org/10.1007/978-94-017-2685-6_16
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