Figure 6. Iron deficient rats were fed either YFC or ferrous sulfate for one week containing either 17mg/kg or 35mg/kg of iron. The amount of iron absorbed from the diets was monitored by subtracting iron consumed from iron in the feces. The animals had no other access to food than the prepared diets and were housed in open bottom cages so they could not consume the feces. The results of this study show that iron in YFC is absorbed better (almost 60%) at the low concentration compared to FeSO4 (40%) although the difference did not reach statistical significance. At the higher concentration iron absorbed from yeast and FeSO4 were similar at 50%. In the latter case FeSO4 iron absorption increased with increasing dose of iron but iron from the yeast decreased suggesting there is a regulatory limit to iron uptake from the yeast. (p>0.05. No significant difference between groups.) : Nutritional Yeast Ferritin-Iron Complex: A Novel Source of Dietary Iron : Science and Education Publishing

Figure 6. Iron deficient rats were fed either YFC or ferrous sulfate for one week containing either 17mg/kg or 35mg/kg of iron. The amount of iron absorbed from the diets was monitored by subtracting iron consumed from iron in the feces. The animals had no other access to food than the prepared diets and were housed in open bottom cages so they could not consume the feces. The results of this study show that iron in YFC is absorbed better (almost 60%) at the low concentration compared to FeSO4 (40%) although the difference did not reach statistical significance. At the higher concentration iron absorbed from yeast and FeSO4 were similar at 50%. In the latter case FeSO4 iron absorption increased with increasing dose of iron but iron from the yeast decreased suggesting there is a regulatory limit to iron uptake from the yeast. (p>0.05. No significant difference between groups.)

American Journal of Food and Nutrition. 2021, 9(3), 122-131 doi:10.12691/ajfn-9-3-5