Calculating the Consumption of Biologically Active Substances of Inorganic Origin Via Cows milk and Dairy Products in Some Endemic Regions of Middle Rhodopes

Borislav Blazhev, Tsonka Odjakova, Ljubomir Angelow

Abstract: Calculation of the daily intake of selenium and iodine in the population inhabiting mountainous areas of the Middle Rhodopes is important for assessing the consumption of biologically active and anticancerous substances through milk and dairy products. Preliminary studies conducted so far show that results of the analytical determination of daily consumption of basic substances by the Duplicate Method are not in line with the Basket method’s calculated theoretical data. The survey conducted in 2016/2017 is based on the daily consumption of milk and dairy products from the human population living in the region of Smolyan (Middle Rhodopes). The experiment involved 6 women and 6 men in 7 consecutive days for all tested subjects. The results of the study show a difference in the total milk and dairy consumption between the two sexes reaching 11%. On average, women consume 11.6% more fresh milk and 44% more yogurt and 21% less cheese and 32% less yellow cheese than men. The study shows that over 50% of the daily consumption in both sexes is due to fresh cow’s milk and only 27 to 35% of yogurt. These differences in consumption of different dairy products are most pronounced in yogurt - 8% more for women, and for the other two products - from 3 to 4% for men. The main amount of selenium consumed by the men and women is obtained via fresh milk and yogurt (72% for women and 61% for men). The main amount of iodine intake is ensured via white brined cheese and yellow cheese (57% for females and 69% for males). The inclusion of the dairy products (yoghurt, white brined cheese and yellow cheese) in the total nutritional balance of the tested probants shows that the selenium level increased by 70% for both sexes and reached 19 μg/day for men and 21 μg/day for the women). High significant increase is observed by iodine intake (11,1-told for women and 15,8-told for men) with the inclusion of white brined cheese and yellow cheese in the diet of the study population (224 μg/day - women resp. 288 μg/day - men). Milk and dairy products are a major source for securing the body’s needs with selenium and iodine. The study shows that nearly 50% of iodine needs can be guaranteed via raw milk and dairy products, while the trace element selenium is covered by 27 to 35% of the needs for both sexes.

Keywords: consumption; daily intake; dairy products; iodine; selenium

Date published: 2019-05-09