Selenium-enriched yeast extract sold as animal fodder additive
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Selenium yeast is a feed additive for livestock, used to increase the selenium content in their fodder. It is a form of selenium currently approved for human consumption in the EU and Britain.[1] Inorganic forms of selenium are used in feeds (namely sodium selenate and sodium selenite, which appear to work in roughly the same manner). Since these products can be patented, producers can demand premium prices.[2] It is produced by fermenting Saccharomyces cerevisiae (baker's yeast) in a selenium-rich media.[3]
There is considerable variability in products described as Se-yeast and the selenium compounds found within. Many manufacturers and products on the market are simply mixtures of largely inorganic selenium and some yeast.[4] Selenium is found in different forms based upon the food in which it is found. For instance, the form found in mustard and garlic is different from the form found in wheat or corn. In some products, the added selenium is structurally substituted for sulfur in the amino acid methionine, thus forming an organic chemical called selenomethionine via the same pathways and enzymes. Owing to its similarity to sulfur-containing methionine, selenomethionine is mistaken for an amino acid by the yeast anabolism and incorporated in its proteins. It has been claimed that selenomethionine makes a better source of dietary selenium in animal nutrition, since it is an organic chemical compound sometimes found in some common crops such as wheat.[3][5]
^"Guidance notes on legislation implementing Directive 2002/46/EC on food supplements".
^European Food Safety Authority (2006). "Opinion of the scientific panel on additives and products or substances used in animal feed on the safety and efficacy of the product Sel-Plex®2000 as a feed additive according to regulation (EC) No 1831/2003". EFSA Journal. 4 (5): 1–40. doi:10.2903/j.efsa.2006.348.
^ abSchrauzer G (2006). "Selenium yeast: composition, quality, analysis, and safety". Pure Appl Chem. 78: 105–109. doi:10.1351/pac200678010105.
^Rayman M, Infante H, Sargent M (2008). "Food-chain selenium and human health: spotlight on speciation". Br J Nutr. 100 (2): 238–253. doi:10.1017/s0007114508922522. PMID 18346307.
^Schrauzer GN (2003). The nutritional significance, metabolism and toxicology of selenomethionine. Advances in Food and Nutrition Research. Vol. 47. pp. 73–112. doi:10.1016/s1043-4526(03)47002-2. ISBN 9780120164479. PMID 14639782. {{cite book}}: |journal= ignored (help)
Seleniumyeast is a feed additive for livestock, used to increase the selenium content in their fodder. It is a form of selenium currently approved for...
Selenium is a chemical element; it has the symbol Se and atomic number 34. It is a nonmetal (more rarely considered a metalloid) with properties that are...
quantity Potassium in biology – Use of Potassium by organisms Seleniumyeast – Selenium-enriched yeast extract sold as animal fodder additive Sodium in biology –...
organic forms such as selenomethionine (selenium bound to methionine, an essential amino acid) or high-seleniumyeast (which contains selenomethionine). A...
or selenium-enriched yeast. In some regions (e.g. much of the northeastern and northwestern US and adjacent Canada, and southeastern US), selenium deficiency...
microbes (e.g. sourdough), chemicals (e.g. baking soda), industrially produced yeast, or high-pressure aeration, which creates the gas bubbles that fluff up...
although Malassezia furfur is responsible for a small number of cases. These yeasts are normally found on the human skin and become troublesome only under certain...
R.; Richie Jr, J.; El-Bayoumy, K. (2010). "Selenium responsive proteins in sera of selenium-enriched yeast supplemented healthy African American and Caucasian...
and seeds; all of these are high in selenium. Brewer's yeast and wheat germ both contain high levels of selenium. Garlic, onions, mushroom, broccoli,...
that provide only selenium use L-selenomethionine or a selenium-enriched yeast. The US Food and Drug Administration approved a selenium supplement to animal...
analog of S-methylcysteine in which the sulfur atom is replaced with a selenium atom. It is an inhibitor of DMBA-induced mammary tumors and a "chemopreventive...
beer, including the yeast, provide a rich source of nutrients; therefore beer may contain nutrients including magnesium, selenium, potassium, phosphorus...
toxic, rare, silver-white metalloid. Tellurium is chemically related to selenium and sulfur, all three of which are chalcogens. It is occasionally found...
The condition may worsen with stress or during the winter. Malassezia yeast is believed to play a role. It is not a result of poor hygiene. Diagnosis...
including piroctone olamine, ketoconazole (Sebizole), zinc pyrithione, and selenium disulfide (Selsun Blue) have been found to be effective. Ketoconazole appears...
have been reported in the literature, such as S-methyl-ergothioneine or selenium-containing selenoneine. Although potential effects of ergothioneine are...
shows significantly less irritation than over-the-counter shampoos such as selenium disulfide shampoos. There are only a limited number of studies regarding...
magnesium, iron, zinc, manganese, copper, iodine, chromium, molybdenum, selenium and cobalt (the last as a component of vitamin B12). There are other minerals...
transparent, cleavable masses called selenite. Selenite contains no significant selenium; rather, both substances were named for the ancient Greek word for the...
cases are caused by Hortaea werneckii, a pigmented fungus, which is a dark yeast found in sewage, soil, rotting vegetation and wood and in places with a...
potassium in model organisms are: 30–300mM in E. coli, 300mM in budding yeast, 100mM in mammalian cell and 4mM in blood plasma. The main role of potassium...
MTs have the capacity to bind both physiological (such as zinc, copper, selenium) and xenobiotic (such as cadmium, mercury, silver, arsenic, lead) heavy...
concentrations of sodium in model organisms are: 10 mM in E. coli, 30 mM in budding yeast, 10 mM in mammalian cell and 100 mM in blood plasma. Additionally, sodium...
—Researches on residual affinity and co-ordination. Part II. Acetylacetones of selenium and tellurium". Journal of the Chemical Society, Transactions. 117: 1456–65...
for lead and cadmium FEBS, otolith for trace metals SELM, selenium-enriched yeast for selenium In 1977, Edmonds et al. reported the identification, isolation...
fluconazole have started to gain acceptance, topical treatment include selenium sulfide shampoo. Tinea faciei is a fungal infection of the face. It generally...
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