Anon Attoh Hyacinthe¹, Yao Kouadio^1,, Dan Chépo Ghislaine¹, Amon Anon Simplice¹, Kouamé Lucien Patrice¹

The objective of this study was to evaluate the effect of ivorian taro (Colocasia esculenta cv yatan and fouê) corm flours (TCF_yf) addition on anti-nutritional factors and mineral bioavailability of wheat (Triticum aestivum L.) flour (WF). WF was substituted with TCF_yf at increasing levels [0% (control), 1%, 3%, 6%, 9% and 12%] in the formulation. Compared to WF, calcium, potassium, magnesium, phosphorous, sodium, copper, zinc, iron, manganese, phenolic compound, oxalate and flavonoid contents of wheat/ivorian taro (Colocasia esculenta cv yatan) corm composite flour (WF-TCF_y) gradually increased with increasing the level of taro (Colocasia esculenta cv yatan) corm flour (TCF_y) in WF-TCF_y. The same trend was observed in potassium, phosphorous, copper, zinc, iron, manganese, phenolic compound, oxalate and flavonoid contents of wheat/Ivorian taro (Colocasia esculenta cv fouê) composite flour (WF-TCF_f) increased with increasing of taro (Colocasia esculenta cv fouê) corm flour (TCF_f) in WF-TCF_f. Inversely, substitution of WF with TCF_f caused gradual decreased in sodium, magnesium and calcium contents of WF-TCF_f. Substitution of WF with TCF_yf decreased phytate and tannin contents in the WF-TCF_yf. The K/Na ratios were greater than 27. When WF substitution was achieved by TCF_yf, the Ca/P ratio of the WF-TCF_y did not change while that of WF-TCF_f decreased. In all cases, the Ca/P ratios were below 0.3. The levels of the toxic substances were not high enough to cause concern as about 80 mg /g diet is detrimental to health. These results could encourage the use of TCF_yf for the development of food products.

anti-nutritional factor, composite flour, Colocasia esculenta, mineral, taro corm