Dintzis F R, Watson P R, Sandstead H H
Am J Clin Nutr. 1985 May;41(5):901-8. doi: 10.1093/ajcn/41.5.901.
Concentrations of Cu, Fe, Zn, Ca, and phytate were measured in dry-milled corn bran, wheat brans, and soybean hulls prior to being baked in bread and after passage through the human GI tract. Significant changes in mineral concentrations in the retrieved remnants compared to the starting materials were as follows: Cu, Fe, and Zn increased by factors of from two to four and Ca increased at least ten-fold in dry milled corn bran; Ca increased and phytate decreased in wheat brans; Zn increased and Fe decreased in soy hulls. These studies show that indigestible remnants of wheat brans in the human colon associate preferentially with calcium and that dry milled corn bran remnants can be loaded with increased concentrations of all four minerals, and especially with calcium. Concentrations of minerals and phytate were significantly greater in whole fecal samples from wheat bran diets than in the corresponding retrieved bran remnants.
在将干磨玉米麸、小麦麸和大豆皮用于制作面包烘焙之前以及通过人体胃肠道之后，对其中铜、铁、锌、钙和植酸盐的浓度进行了测量。与起始原料相比，回收残渣中矿物质浓度的显著变化如下：在干磨玉米麸中，铜、铁和锌增加了2至4倍，钙至少增加了10倍；在小麦麸中，钙增加而植酸盐减少；在大豆皮中，锌增加而铁减少。这些研究表明，人体结肠中难消化的小麦麸残渣优先与钙结合，并且干磨玉米麸残渣中所有四种矿物质的浓度都可以增加，尤其是钙。食用小麦麸饮食的全粪便样本中矿物质和植酸盐的浓度明显高于相应回收的麸皮残渣。
