1st International Conference on Chemo and Bioinformatics, October 26-27, 2021. Kragujevac, Serbia. Abstract: Plants are very important for proper human nutrition, so the content of essential elements was investigated in two poppy species. Essential elements such as Ca, Na, K, Mg, Fe, Cu, Co, Mn, Mo and Zn play a vital role in various biological processes. Samples of roots, stems, leaves and seeds of Papaver rhoeas L. and Papaver somniferum were acid dissolved and analyzed by inductively coupled plasma optical emission spectrometer (ICP-OES). The highest concentration of Ca was contained in leaf samples ML1 and ML2 with values of 38618.90 and 33320.15 mg/kg, the root of Papaver rhoeas L. had the highest concentration of Na with a value of 1651.07 mg/kg, while the leaf had the highest concentration of Mg of 4400.04 mg/kg. The leaf Papaver somniferum contains the highest concentration of K with a value of 61595.90 mg/kg, the root samples MK1 and MK2, both poppies had the highest Fe of 1254.21 and 1620.16 mg/kg. Seeds of both poppies, Papaver rhoeas L. and Papaver somniferum, contain the highest concentration of Cu with values of 30.57 and 22.20 mg/kg, Mn with values of 71.99 and 58.10 mg/kg and Zn with values of 76.99 and 82.09 mg/kg. The Co content in all samples was low. eng application/pdf 559965 bytes info:eu-repo/semantics/conferenceProceedings Quantification of essential elements in Papaver rhoeas L. and Papaver somniferum 2021 Key words: Papaver rhoeas L., Papaver somniferum, essential elements, ICP-OES, nutrition Uđilanović, Marija Vasiljević, Sanela Stanojević Šimšić, Zdenka All rights reserved https://unilib.phaidrabg.rs/o:384 doi:10.46793/ICCBI21.133U cobiss:58323465