Makroelementų kiekis bulvių gumbuose su spalvotu minkštimu

Abstract

The purpose of the research is to determine and compare the amounts of macroelements in the flesh and peel of different cultivars of potato tubers. The subject of the research is six cultivars of Solanum tuberosum L.: 'Red Emmalie' 'Rosalinde', 'Highland Burgundy' (red flesh), 'Violetta', 'Valfi' ir 'Salad Blue' (purple flesh). The analysis of the chemical composition of potato peel and flesh was performed at the LAMMC (Lithuania research centrer for agriculture and forestry) laboratory. Using standart methods for potato tuber flesh and peel it was determined : Nitrogen content - Kjeldahl method (LST EN ISO 20483: 2013); Quantities of potassium, magnesium, calcium and phosphorus - inductively coupled plasma atomic emission spectroscopy (ICP-AES) (LST EN 15510: 2017). Essentially phosphorus and potassium were mostly in 'Violette' potato tubers peel, mostly calcium in 'Highland Burgundy' potato tubers peel. The highest amounts of macro-compounds (nitrogen, phosphorus, potassium, calcium and magnesium) researched were found in potato tuber peel.