Studies on the reduction of phosphorus compounds from animal waste by decreasing of phytate concentration in soybean grain.

大豆是广泛应用于家畜饲料的原料。然而，大豆籽粒中含有植酸（phytate），它是籽粒中主要的磷储存化合物，占籽粒总磷（P）的80%。植酸盐在单胃动物如猪、鸡和人类中几乎是不消化的，所以植酸盐通过消化系统。因此，家禽和鸡的粪便中含有大量的P。因此，在谷物消费区，P会流失到环境中，这可能导致土壤假种皮水中P浓度过高。增加非植酸磷（PA）化合物如无机磷和/或有机磷化合物替代PA是提高粮食磷有效性的有效途径之一。本研究旨在提高大豆植株磷素的营养有效性。对70个大豆品种进行了植酸磷含量分析，结果表明：70个大豆品种植酸磷含量在14.7 ~ 25.6mg/g干重之间，占全磷的55 ~ 90%。而降低大豆籽粒PA、提高无机磷含量的突变体PA-P含量为1.99 mg/g DW。种子中磷素含量占全磷含量的16%。低植酸突变体的蛋白质、Ca、Mg、K、N、Fe和Zn含量与其它70个品种相同。这些结果表明，低植酸突变体将是有用的工具，在减少动物废物中的植酸的量，有助于目前的努力，以改善农业生产中的磷的管理和努力，以减少这种生产对环境的影响。

Soybean is widely used in the raw materials of livestock fodder. However, soybean grains is particular contain phytic acid (phytate), which is the major phosphorus storage compound in grains and account for up to 80% of the total grain phosphorus (P). Phytate is almost indigestible in monogastric animals such as pigs, chickens, and humans, so phytate passes through the digestive system. Therefore, poultry and chicken feces contained large amounts of P. As a result, P is lost to the environment in cereal-consuming regions, where it may contribute to excessive P concentration in soil aril water. One effective method the increase the availability of P in grain is by increasing the non-phytic acid P (PA) compounds such as inorganic P and/or organic P compounds instead of PA in grain. This study was conducted to improve the nutritional availability of P in a soybean plants. Analysis of 70 soybean cultivars was conducted to identify cultivars that showing either high or low concentration of phytic acid-P. The PA concentration in 70 cultivars ranged 14.7 to 25.6 mg/g DW, and PA concentration to total P ranged from 55 to 90 %. However, the PA-P concentration in mutation that reduce soybean seed PA and increase inorganic P was 1.99 mg/g DW. And also percentage in PA to total P concentration was 16% in seed. Protein, Ca,Mg,K,N,Fe and Zn concentration in low phytic acid-mutant was same as the other 70 cultivars. These results indicated that low phytic acid-mutant would be useful tool in reducing the amount of phytic acid in animal waste, contributing to the current efforts to improve the management of P in agricultural production and efforts to reduce the impact of this production on the environment.