Research on the mineral composition of American cranberries and wild cranberries in Latvia | Amerikas lielogu un savvaļas dzērveņu ogu minerālā sastāva salīdzinošs izvērtējums
2009
Karlsons, A., University of Latvia, Salaspils (Latvia). Inst. of Biology | Osvalde, A., University of Latvia, Salaspils (Latvia). Inst. of Biology | Nollendorfs, V., University of Latvia, Salaspils (Latvia). Inst. of Biology
Wild cranberry (Vaccinium oxycoccus L.) is one of the small fruit species of commercial importance in Latvia, traditionally used in folk-medicine and food. Typically, there are wide fluctuations in yield annually and between different parts of the country. The commercial cultivation of American cranberry (Vaccinium macrocarpon Ait.) was successfully started during last 15 years and today Latvia is the fourth major cranberries producing country. With the increase in consumption of cranberries, widely considered being as one of the healthiest foods, it becomes important to have detailed information on the nutritional content of cranberries. The aim of this study was to compare the contents of twelve biologically essential elements (N, P, K, Ca, Mg, S, Fe, Mn, Zn, Cu, Mo, B) in berries of two Vaccinium species: V. oxycoccus and V. macrocarpon. Together 78 (leaf and berry) samples were collected from 4 main cranberry producing sites and 3 native bogs during autumn 2004. The present study revealed significant differences in the mineral composition of V. oxycoccus and V. macrocarpon. Cultivated cranberry fruits had a higher content of P and Fe while wild cranberries showed higher levels of Ca, Mg Mn, Zn, Cu and B. Plant leaf analysis revealed organspecific distribution of mineral elements in both cranberries studied. The present study shows that fruits of both V. macrocarpon and V. oxycoccus are a valuable source of the microelements: Mn, Fe, Cu, Mo, and B in human nutrition. Since the wild cranberry has a especially high concentrations of Mn, 100 g of fresh berries could supply 121% of the adult daily requirement.
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