Changes of phytate-phosphorus content and phytase activity at germinated feedstuffs

The pure-bred feedstuffs rye Marder, barley Grete and Borwina, wheat Alidos , triticae Modus, oats Alf, and peas Katrin were germinated in a germ appli ance. The germ process exists out of a change of water and air influx. In d ifferent time spacings (4, 8, 12, 16, 20, 24, 36, 48, 72 h) preferably homo geneous samples was pulled, immediately lyophilized, and native phytase act ivity, phytate phosphorus and total phosphorus content determined. In all f eedstuffs could have been observed a decrease during germination of phytase activity of 84% until 800% (wheat + 94%, triticale + 105%, oats + 800%, ba rley + 174%, rye + 84,4%, peas + 750%). Against that the reduction in phyta te phosphorus fell out very different. At wheat (- 36,6%), rye (- 46,3%) an d barley (- 30,7% vs. - 18,5%) she is very high after 72 hours of germinati on. Oats, peas and triticale comparatively showed off a small reduction in phytate phosphorus. The total phosphorus content at all feedstuffs showed a n approximately unchanging content. Between duration of germination and nat ive phytase activity all tested feedstuffs resulted in a high significant c orrelation of 0.74 until 0.97.