Abstract
The aim of this paper was to establish the mineral contents of oil-bearing seeds and kernels such as peanut, turpentine, walnut, hazelnut, sesame, corn, poppy, almond, sunflower etc., using Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). Significant differences in mineral composition were observed among crops. All seeds and kernels contained high amounts of Al, Ca, Fe, K, Mg, Na, P and Zn. B, Cr, Cu, Li, Ni, Sr, Ti while V contents of the crops were found to be very low. The levels of K and P of all crops in this study were found to be higher than those of other seeds and kernels. The results obtained from analyses of the crops showed that the mean levels of potassiumcontent ranged from 1701.08 mg/kg (corn) to 20895.8 mg/kg (soybean), the average content of phosphorus ranged from 3076.9 mg/kg (turpentine) to 12006,5 mg/kg to 2617.4 mg/kg (cotton seed), and Ca from 68.4 mg/kg (corn) to 13195.7 mg/kg (poppy seed). The results show that these values may be useful for the evaluation of dietary information. Particularly the obtained results provide evidence that soybean, pinestone and poppy seed are a good source of K, P and Ca, respectively. Whereas pinestone is a good source of zinc.
Highlights
A number of mineral ions are recognized as essential plant nutrients that are directly incorporated into organic compounds sythesized by the plant
Mineral values were established to vary widely depending on the different seeds and kernels
The Lithium contents of seeds and kernels were found in small percentages in all the species analyzed, ranging from 1.63 mg/kg soybean to 2.76 mg/kg black cumin
Summary
A number of mineral ions are recognized as essential plant nutrients that are directly incorporated into organic compounds sythesized by the plant. The significance of oil-bearing seeds and kernels in the nutrition of human populations is increasing for several reasons. The seeds of oil-bearing crops (sunflower, corn, peanuts, hazelnut, walnut, mustard, black cumin, soybean, sesame etc.) have several food value and curative properties (Özdemir et al, 2001; Özcan, 2004; Glew et al 1997; Anonymous 2004a). Sunflower kernels are well above average in protein, phosphorus and iron concentrations. The flour made from sunflower seeds is one of the richest sources of iron in any food. It is, highly beneficial in the prevention and treatment of anemia (Anonymous 2004a).
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