Determination by Atomic Absorption Spectrometry of mineral content from maize (Zea mays) hybrids and their carotenoidic extracts

Delia G. Dumbravă, Alfa-Xenia Lupea, Nicoleta G. Hădărugă, Daniel I. Hădărugă, Camelia Moldovan, Adrian Riviş, Mărioara Drugă
The paper presents the determination, by atomic absorption spectrometry (AAS), of some minerals concentration (K, Na, Ca, Mg, Fe, Mn, Cu, Zn, Pb, Co, Cr, Ni) in different maize (Zea mays) hybrids and also in the purified carotenoidic extracts obtained from this raw materials. It was used an atomic absorption spectrometer Varian Spectra AA 110 with four lamps. The main macroelement both in the maize flour and in the carotenoidic extracts was potassium (between maximum 4029 ppm and minimum 3663 ppm maize flours, respectively between maximum 3006,00 ppm and minimum 970 ppm in maize flour carotenoidic extracts). The macroelements: K, Na, Ca and Mg, from the analyzed carotenoidic extracts are in the lower concentration that in the raw materials, this minerals being removed to a great extent during the extraction process. The heavy metals concentrations was under maximum lawful limit, except Cu from the Laureat maize hybrid flour. All the obtained data were statistical processed by Principal Component Analysis (PCA) method. It was obtained a good cases classification by this multivariate analysis; the main elements responsible for the first classification were magnesium and potassium.he paper abstract will be written with Times New Roman 10 pt., justify. It will contains maximum 150 words.
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