In otherwise normal Wistar rats, yacon flour (from the tubers) at 15.6% of the diet by weight for four weeks failed to significantly increase the mineral content of the tibia relative to control; in the same study, rats given Bifidobacterium longum culture (probiotic at 0.1mL, 109 CFU/mL) noted a significant improvement whereas the combination of treatments was similar in potency to culture alone and no group experienced an increase in femur thickness nor fracture resistance. In another study, a lower dose of yacon (conferring 5-7.5% total FOS in the diet) in growing Wistar rats was associated with increased mineral status of bones as well as increased femur stiffness and peak load capacity.
In rats fed an acute dose of either 340mg/kg or 6,800mg/kg fructooligosaccharides (FOS) from yacon flour, there was a minor reduction in the spike of blood glucose following an oral glucose tolerance test at 60-120 minutes yet not prior to the test. This efect only occurred with the low dose, and ingestion of yacon flour did not modify the overall exposure (AUC) of glucose after a meal.
In rats fed Yacon flour (up to 6,800mg/kg fructooligosaccharides daily) for four months, there was an increase in cecal hypertrophy seen that did not occur at lower tested doses (340mg/kg; human equivalent of 55mg/kg) and no alterations in other biomarkers of toxicity were noted at either dose.
If you like yacon flour, you will also want to check out the dried yacon root pieces and the yacon syrup And don't miss out on , our trail mix which includes yacon, and is one of our best-selling products.
Mean values and standard deviation of the L*, a* and b* coordinates, pH, total soluble solids and acidity of the yogurts added of yacon flour.