Abstract Proximate analysis, mineral composition and some toxic substance of (Pterygota macrocarpa) seed flour were determined using standard methods. The dried samples contained, on average 10.81g/100g Crude Protein (CP), 74.73g/100g ether extract (EE), 7.58g/100g Crude Fibre (CF), 1.57g/100g Ash and 96.33g/100g Dry Matter (DM). Potassium, sodium, calcium and phosphorus were the most abundant minerals in the dry sample with mean value of 13.03, 25.88, 6.50, 26.06 and 475.96g/100g respectively, and very low in iron and manganese (1.22 and 1.61mg/100g respectively). Three toxic substances were determined: phytic acid was 156.8mg/100g, tannin 73.3mg/100g and Oxalate 5.45mg/100g. Conclusively; the Pterygota macrocarpa seed flour can therefore be useful in chemical industries for synthesis(production) of other chemicals and can also be a good ingredient for animal feed production.
Keywords: Kernel, proximate, raw, cooked.