Mineral elements determination in wild edible plants
1999
Guil Guerrero, J.L. | Campra Madrid, P. | Torija Isasa, M.E.
Mineral element composition is given for the leaves of 7 species of edible wild plants used by the first European farmers which are still consumed today. This is the first comprehensive nutrient report on most of these species of leafy green vegetables. Moisture, ash, organic nitrogen, phosphorous, sodium, potassium, calcium, magnesium, iron, copper, zinc and manganese were determined. Plants harvested from their natural habitats in several locations were analyzed. Mineral element content was high in Malva sylvestris and Parietaria officinalis. Moisture content was found to be high in Pichris echioides and Cakile maritima. This was greater than 90 g/100 g, and therefore most mineral elements were found in small amounts in these species. Sodium content was high for Salicornia europaea and Parietaria diffusa (884.7 and 585.2 mg/100 g respectively), two hallophytical species. High percentages of zinc and iron were found in Malva sylvestris L. (1.98 mg/100 g and 5.82 mg respectively). K/Na, Ca/P and K/(Ca+Mg) nutrient ratios were also found to be at acceptable levels in most cases.
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