Mineral composition of walnut kernel and walnut oil cake

Abstract

Walnuts are extremely nutritious. Concerning minerals walnuts are a source of calcium, magnesium, and potassium, which are part of their benefits to the cardiovascular system. This study was conducted to evaluate the mineral concentration of Walnut (Juglans regia L) and walnut oil cake. The walnuts of Călărași variety was used in this study. Mineral levels were analyzed by Atomic absorption spectroscopy. The mineral contents of walnut and walnut oil cake were K (356,6,/528,3), Na (1,33/1,65), Mg (146,6/268,1), Ca (136,1/248,9) Fe (7,09/8,59), Zn (2,91/5,25), Cu (1,56/2,96) mg/100g respectively. There are high amounts of K, Na, Mg, Ca, Fe, Zn, and Cu in Walnut kernel and oil cake so that these products have high nutritional value and their daily consumption can supply some of the needed dietary mineral intake.