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Selenium in biology. Selenocysteine is the main organic molecule involving selenium in humans. Selenium is an essential micronutrient for animals, though it is toxic in large doses. In plants, it sometimes occurs in toxic amounts as forage, e.g. locoweed. Selenium is a component of the amino acids selenocysteine and selenomethionine.
Selenium deficiency occurs when an organism lacks the required levels of selenium, a critical nutrient in many species.Deficiency, although relatively rare in healthy well-nourished individuals, [1] can have significant negative results, [2] affecting the health of the heart and the nervous system; contributing to depression, anxiety, and dementia; and interfering with reproduction and gestation.
Snails are a good source of selenium. Of the recommended daily requirement of selenium, the snail provides up to 50% (in women) and 30% (in men). [21] Snail flesh is a good supply of essential amino acids such as lysine, methionine, and cysteine, which are difficult to get in other sources of protein, according to Adeyeye et al. (2020).
Tolerable upper intake levels (UL), to caution against excessive intake of nutrients (like vitamin A and selenium) that can be harmful in large amounts. This is the highest level of sustained daily nutrient consumption that is considered to be safe for, and cause no side effects in, 97.5% of healthy individuals in each life stage and sex group.
Vitamin B 6 is a water-soluble vitamin, one of the B vitamins. The vitamin actually comprises a group of six chemically related compounds, i.e., vitamers, that all contain a pyridine ring as their core. These are pyridoxine, pyridoxal, pyridoxamine, and their respective phosphorylated derivatives pyridoxine 5'-phosphate, pyridoxal 5'-phosphate ...
Selenomethionine (SeMet) is a naturally occurring amino acid. The L -selenomethionine enantiomer is the main form of selenium found in Brazil nuts, cereal grains, soybeans, and grassland legumes, while Se -methylselenocysteine, or its γ-glutamyl derivative, is the major form of selenium found in Astragalus, Allium, and Brassica species. [ 1]
Sodium selenate is the inorganic compound with the formula Na. 2SeO. 4. It exists as the anhydrous salt, the heptahydrate, and the decahydrate. [ 1] These are white, water-soluble solids. The decahydrate is a common ingredient in multivitamins and livestock feed as a source of selenium. The anhydrous salt is used in the production of some glass.
Micronutrient. Micronutrients are essential dietary elements required by organisms in varying quantities to regulate physiological functions of cells and organs. [ 1][ 2] Micronutrients support the health of organisms throughout life. [ 3][ 4][ 5] In varying amounts supplied through the diet, micronutrients include such compounds as vitamins ...