élément trace (1) espèce (1) minéral (1) comparaison (1) calcium (1) Afrique (1) Comparison (1) Varieties (1) Phytochemicals (1) Minerals (1) Values (1) Value (1) Trace elements (1) Spinach (1) Spectrophotometry (1) Species (1) South Africa (1) Phenols (1) Minerals in nutrition (1) Mass spectrometry (1) Magnesium (1) High performance liquid chromatography (1) Edible greens (1) Diet (1) Carotenoids (1) Calcium (1) Argon (1) Amaranths (1) Swiss chard (1) Sources (1)