Weaver C M, Nelson N, Elliott J G
J Nutr. 1984 Jun;114(6):1042-8. doi: 10.1093/jn/114.6.1042.
Intrinsic and extrinsic labeling techniques were used to measure iron bioavailability from soybean fractions (isolated soy protein, defatted flour, soy hulls, insoluble material and whey) by iron-depleted and non-iron-depleted rats. As expected, absorption of iron was higher in the iron-depleted than in the non-iron-depleted rats. In the iron-depleted group, significantly more iron was absorbed from soy whey than from other fractions. No other significant difference in iron absorption associated with iron source was observed. The higher absorption rate of iron from whey by the iron-depleted rats probably was related to a lower quantity of food consumed during the test meal by this group. Intrinsic and extrinsic labeling techniques produced similar assessments of bioavailability of iron.
采用内源性和外源性标记技术，通过缺铁和非缺铁大鼠来测定大豆各组分（分离大豆蛋白、脱脂面粉、豆皮、不溶性物质和乳清）中铁的生物利用率。正如预期的那样，缺铁大鼠中铁的吸收高于非缺铁大鼠。在缺铁组中，从大豆乳清中吸收的铁明显多于其他组分。未观察到与铁源相关的铁吸收有其他显著差异。缺铁大鼠从乳清中吸收铁的较高速率可能与该组在试验餐期间摄入的食物量较少有关。内源性和外源性标记技术对铁生物利用率的评估结果相似。
