Mineral Composition of Quinoa (Chenopodium quinoa) Plant during Vegetation Period with Special Reference to Copper
2014
Debski, B. | Gralak, M.A. | Gesinski, K. | Jendrzejczak, E.
Two varieties of quinoa (Chenopodium quinoa) viz. Olav and Sandoval were cultivated in central Poland. Biomass and concentrations of Ca, Mg, Mn, Zn, Fe, Cu, and Cr (using flame AAS method) were estimated in different parts of plant (stem, leaves, infructescence), during 180 days of vegetation period. Whole green part of quinoa was found to contain higher concentrations of Mg, Mn, Zn, Fe and Cu than whole plant cereals (data known from literature). Estimated mineral concentrations found in quinoa plant were compared with requirement of these elements for cattle. Comparison of mineral composition of different parts of quinoa showed that the concentration of the examined minerals, except for Cu, were highest in leaves followed by infructescence and stem. In case of this metal its highest concentration was observed in infructescence followed by leaves and stem. At the end of the vegetation period participation of infructescence in plant copper content was high and ranged from 57% (Olav var.) to 65% (Sandoval var.). Average Cu content in quinoa plants of the two examined varieties was positively correlated with duration of vegetation period, and its concentration exceeds 10 mg/kg DM, the stipulated dietary requirements for cattle. It is concluded that quinoa could be used for cattle and seems to be a good source of macro and micro-elements like magnesium, manganese, iron, zinc and copper.
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