Abstract
The bioavailability of iron from local plants(black cumin seeds, milk thistle seeds, sesame seedsand thyme leaves) was investigated. Apparentabsorption of iron was calculated by subtracting fecal iron(using total collection of feces) from iron intake inSprague-Dawley rats. Two trials of animal feeding wereperformed. Liver and serum concentrations of iron, andserum hemoglobin concentration were taken as responseparameters for the bioavailability. Dry thyme wasparticularly rich in iron (117.2 mg/100 g dry matter)and milk thistle seeds in crude fiber (25 g/100 g drymatter). Rats fed the dry thyme diet or thatsupplemented with 5% egg white died but when the dietwas supplemented with 10% egg white, the animalssurvived. Iron intake and apparent and total ironabsorption were highest for the rats fed the drythyme-egg white diet. Liver weights for the groups fedblack cumin seeds and dry thyme were significantlyhigher (p < 0.05) than those for the groups fed milkthistle and sesame seeds. Liver content of ironwas highest for the animals fed black cumin seeds.Serum iron content increased significantly (p < 0.05)for the animals fed black cumin seeds, and serumhemoglobin concentration increased significantly (p < 0.05) in the groups fed milk thistle seed and blackcumin seed diets, but decreased for the group fed thethyme-egg white diet. It is concluded from this studythat iron was better utilized from black cumin seedsas indicated by liver storage of iron. On the otherhand, thyme had the highest iron absorption but lowestutilization.
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Abu Jadayil, S., Tukan, S. & Takruri, H. Bioavailability of iron from four different local food plants in Jordan. Plant Foods Hum Nutr 54, 285–294 (1999). https://doi.org/10.1023/A:1008195019618
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DOI: https://doi.org/10.1023/A:1008195019618