Abstract

Two genuses of imported nuts (Turkish Hazelnut and Uzbek Walnut) were examined for their nutritional and mineral contents. It was found that the percentages on dry weight basis of total ash, proteins, lipids, total carbohydrates, reducing sugars, crude fiber, total phenolic compounds, free phenolic compounds, tannins(g/100g) and ascorbic acid (mg/100g) for the hazelnut were 1.92, 14.45, 56.22, 15.89, 3.84, 7.90, 9.57, 9.57, 0.00 and 5.80 respectively, and for the walnut were 1.85, 14.28, 61.72, 12.94, 2.96, 5.85, 9.23, 9.23, 0.00 and 1.12 respectively. The minerals Ca. K and Na were determined using Eppendrof flame photometer and the recorded values for the Hazelnut were 1375.50, 6122.90 and 34.90 µg/g respectively, and for the walnut were 825.00, 5220,00 and 18.80 µg/g, respectively. A colorimetric method was used for determining phosphorus using ammonium-vandate-molybdate as indicator and the values for hazelnut and walnut were 3260.00 and 4000.00 µg/g, respectively. The minerals Mg, Mn, Fe, Zn, Cu, Co ,S, I, Cr and Se were determined using atomic absorption spectrophotometer and were found to be 1763.60,59.30, 38.80, 23.90, 16.72, 0.11, 0.40, 0.00, 0.28 and 0.03 µg/g for the Hazelnut, respectively , and for the Walnut were 1580.00 , 28.50, 26.42, 25.50, 13.10, 3.11, 0.38, , 0.23, 0.00 and 0.04 µg/g, respectively .The Minerals Ni, Cd and Pb were found as trace elements gave amounts less than 0.03 µg/g.