According to zinc absorption most amount specific region of m-XRF mapping two-dimensional imaging determined m-XAFS spectra. The zinc chemical states of different zinc sources were different, but the structure and the chemical state of zinc were similar after they were absorbed in the duodenal wall specific region. This indicates that the absorption pathway of organic zinc and in organic zinc was similar in the duodenal wall specific region. After organic zinc passed in to duodenal wall, elemental zinc could be prevented from changing into insoluble compounds. Organic zinc could not be completely absorbed through the duodenal wall rather than Zn 2þ form absorption. It was dissociated into ions and was absorbed by means of the absorption pathway of in organic zinc. Alternatively, it may have been absorbed into insoluble gels that could hamper the absorption of elements in the intestine and could directly reach the small intestinal brush border and be hydrolyzed on absorption sites. Zinc entered into intestinal epithelial cells as ions and was absorbed into the blood. This breaks with the traditional
complete absorption hypothesis that chemical states that organic zinc is absorbed as a whole through small intestine wall. The results show that the absorption process of different zinc compounds are regulated by saturated carriers, which suggest that the absorption pathway of organic zinc and in organic zinc is the same (Yu et al.,2008). The results of our experiment were in agreement with the absorption hypothesis for organic zinc.