Untersuchungen zur Mineralstoffaufnahme bei Brennnessel (Urtica dioica L.), Gundermann (Glechoma hederacea L.) und Tabak (Nicotiana tabacum L.)
Nowadays, when we speak of plant ingredients, we tend to focus almost exclusively on the plant’s organic compounds. Much less attention is paid to the inorganic compounds of a plant, even though they can give evidence of the character of the plant and they represent the most important aspect of a plant when it comes to making an ash. Three medicinal plants, nettle (Urtica dioica L.), ground ivy (Glechoma hederacea L.) and tobacco (Nicotiana tabacum L.) were cultivated under controlled conditions, each in two different substrates (silica-rich and lime-rich soil). The plant parts above ground were harvested, dried, ashed and the ash then analyzed. The results show the species-specific interactions of the three medicinal plants with the main elements. The influence of the soil composition on the composition of the ash could also be shown, but this was of lesser importance compared with the species-specific effect of the plants on the mineral composition.