STUDY OF THE ELEMENTAL COMPOSITION OF WATER EXTRACTS SIBERIAN CONIFERS

Abstract

In Siberia, when harvesting commercial coniferous wood and pine nuts, a large amount of waste remains in the form of needles and shells. These organic residues that require recycling may be of interest as raw materials for the production of feed additives in animal husbandry, so it is important to study their chemical composition. The study of the elemental composition of water extracts of pine nut shells and pine needles prepared under different conditions: whole and crushed shells – at an extraction temperature of 25 and 100 °С and duration of infusion 5 and 24 hours; pine needles – at an extraction temperature of 100 °С and duration of infusion 5 and 24 hours. The elemental composition was determined by inductively coupled plasma mass spectrometry. As a result of research, it was found that the most effective extraction of elements in the infusions of the studied raw materials was observed at a water temperature of 100 °С and duration of infusion 24 hours. At the same time, crushing the pine nut shell allowed to increase the degree of extraction of elements. It was found that extracts of pine nut shell from macronutrients contained the most K, Cl, Mg, P, from microelements – Zn, Mn and Fe; extracts of pine needles from macronutrients contained more K, Mg, Cl, from microelements – Mn, Zn and Fe. The highest absorption capacity was found in samples of crushed pine nut shells.