Content of biologically active agents and mineral elements in flower pollen depending on the region of collecting
The paper deals with the study on biochemical composition of flower pollen. The content of organic acids, tannin agents and dyes, including the content of tannin, was determined through titration. The content of anthocyans, flavonols, catechins, carotenoids was determined by a photometric method. Iodometric method was used to determine the content of ascorbic acid, weight method - the content of fat and water, ionometric technique - рН and nitrates, atomic and adsorptive method - the content of mineral elements. Among studied biochemical indicators of flower pollen only рН remains rather stable and little depending on the region of collecting. The cleanest pollen, without heavy metals and nitrates, the richest one in crude fat and tannin was pollen from Ryazan region. The pollen collected in Lipetsk region was the richest in ascorbic acid, water-soluble pectin substances, ash constituents, tannin agents and dyes and with less water content. The pollen from Krasnodar Krai was the richest in flavonols, catechins, anthocyans, carotenoids, including carotene. From an environmental perspective it was less polluted than the pollen collected in Lipetsk region.