Analysis of the mineral composition of coriander seed cake (<i>Coriandrum sativum L.</i>) for the development of new phytobiotics feed additives

The purpose of this research was to study the mineral composition of feed additives based on coriander cake ( Coriandrum sativum L. ) with varying saturation with essential oils. Compositions of several types of feed additives have been developed from by-products of the production of essential oil (coriander cake) and various amounts of essential oil (0.03- 0.1%, 2.0, and 4.0%). The granulometric and chemical (including mineral) composition of coriander cake obtained from fruits grown in different regions was studied. In all developed feed additives, the particle size of 0.315-0.500 mm was more than 70%. It was found that the best characteristics in the study of mineral and nutritional value are obtained from the cake obtained from the Republic of Crimea, Belgorod and Rostov regions. The results showed that the highest moisture content was found in the coriander cake in sample 3, and the lowest in sample 1. The concentration of minerals (crude ash – 5.16-6.10%, respectively. It was found that the concentration of arsenic in coriander cake was &lt; 0.01 mg/kg DM, cadmium – &lt; 0.005, lead – &lt; 0.01, mercury – &lt; 0.010 mg/kg DM. Among the heavy metals (an ultra-trace element), nickel was found in coriander cake (from 1.9 to 4.1 mg/kg, respectively, while the maximum amount was contained in the sample from the Rostov region, the smallest - from the Republic of Crimea). A similar trend was observed in the content of selenium and chromium in all samples where they were detected – selenium from 0.4-0.45 mg/kg, and chromium – less than 0.025 mg/kg DM.