饲料有机微量元素的多元螯合与多重螯合

发布时间：2018-06-27 10:12

本文选题：有机微量元素 + 络合物　；参考：《饲料工业》2017年01期

【摘要】：有机微量元素是指有机物与无机微量元素通过化学键或物理氢键结合的产物,微量元素与有机物结合一般称为络合物。两核络合物或多核络合物是特殊的络合物,称为“螯合物”。“单一螯合”是指在同一反应体系中,一种有机物与一种无机元素结合的工艺。“多元螯合”是指在同一反应体系中,一种有机物与多种无机元素分别结合的工艺,产生的产物就是多元螯合物。多元螯合的原则是根据螯合物稳定常数大小决定反应的顺序,先反应稳定常数大的元素,后反应稳定常数小的元素。“多重螯合”是指在同一反应体系中,一种无机金属元素与多种有机物分别结合的工艺,产生的产物为多重螯合物。多重螯合的原则同样是根据螯合物稳定常数大小决定反应的顺序,先反应稳定常数大的有机物,后反应稳定常数小的有机物。多元螯合的目的是为了提高有机物配位体的转化率;多重螯合的目的是为了提高无机金属元素的螯合率。多重螯合的价值是更充分提高目标微量元素的利用效率,进一步减少微量元素添加剂的污染。而多元螯合的价值是充分利用价值高的有机物的螯合作用,同时减少个别作为螯合配位体的有机物可能对动物肠道健康的抗营养作用。
[Abstract]:Organic trace elements are the products of the combination of organic and inorganic trace elements through chemical bonds or physical hydrogen bonds. The combination of trace elements and organic compounds is generally called complex. Binuclear complexes or polynuclear complexes are special complexes called chelates. "single chelation" refers to a process in which an organic substance is combined with an inorganic element in the same reaction system. "multiple chelation" refers to a process in which organic compounds are combined with many inorganic elements in the same reaction system, and the products produced are polychelates. The principle of multicomponent chelation is to determine the order of reaction according to the stability constant of the chelate, first to react the element with large stability constant, then to react with the element with small stability constant. "multiple chelation" refers to a process in which inorganic metal elements are combined with a variety of organic compounds in the same reaction system, and the products produced are multiple chelates. The principle of multiple chelation is to determine the order of the reaction according to the stability constant of the chelate. The organic matter with large stability constant is first reacted, then the organic matter with small stability constant. The purpose of multicomponent chelation is to increase the conversion rate of organic ligand and the purpose of multiple chelation is to increase the chelation rate of inorganic metal elements. The value of multiple chelation is to improve the utilization efficiency of the target trace elements and to reduce the pollution of trace element additives. The value of multicomponent chelation is to make full use of the chelating effect of high value organic matter and to reduce the antinutritional effect of individual organics as chelating ligand on animal intestinal health.
【作者单位】：华南农业大学动物科学学院;南宁市泽威尔饲料有限责任公司;
【分类号】：S816.72

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