【摘要】 为澄清文献上关于大豆制品不利于膳食铁生物利用率的有争论的观点,本文以硫酸亚铁为参考铁源,某厂试制的猪血粉铁为比照铁,面粉为载体,通过血大鼠模型血红蛋白恢复效应,研究了大豆粉铁的相对生物利用率(RBA％)。实验结果表明:当恢复饲料中3/4 (24/32ppm)铁来自大豆粉、大豆粉面粉各半、猪血粉面粉各半、猪血粉和硫酸亚铁时,贫血大鼠在五周恢复期间血红蛋白恢复效应顺次分别是(g％):6.6至9.4;7.0至10.4;6.1至11.1;6.4至11.4和5.3至12.8。各组铁的相对生物利用率顺次分別为45.4、65.0、72.0、74.0和100％。大豆粉铁的相对生物利用率最低。本文并就此提出一些讨论意见。更多还原

【Abstract】 In order to clarify the disputing view-points in some publications, that the soy products are whether unfavourable or not to the bioavailability of diet iron, we estimated the relative bioavailability of the iron from soy flour by hemoglobin regeneration method in rats suffered from iron deficiency anemia. In this experiment the ferrous sulfate was used as a standard, wheat flour as a vehicle, and the pig blood powder as a reference substance. The iron content in the regeneration diet fed to rats of each group was 32 ppm in total, and among it 24ppm was originated from (1) soy flour, (2) soy flour plus wheat flour (half and half), (3) pig blood powder, (4) pig blood powder plus wheat flour (half and half), and (5) ferrous sulfate respectively.The experimental results showed that during the 5-week regeneration period the regenerated hemoglobin level of the rats of corresponding groups were (1) 6.6±1.6→9.4±1.7, (2) 7.0±0.9→10.4 ±1.5, (3) 6.4±1.6→ 11.4±1.4, (4) 6.1±0.6-11.1±1.9, and (5) 5.3±1.2-12.8 1.0, thereby the percentage of iron relative bioavailability of five groups were (1)45.4, (2)65.0, (3)74.0, (4)72.0, (5)100.0 respectively. The iron from soy flour showed a lowest bioavailability aalong the different diet sources in our exper-iment, and therefore the iron from soy products was unfavourable to prevent and treat the iron deficiency anemia. We also made some discussions and suggestions in this paper.更多还原