Mushrooms selenium

Se Speciation in Plants The presence of a number of volatile Se species was reported in edible allium plants such as garlic by GC-AES [79]. Selenomethionine, Se-methylselenocysteine, and y-glutamyl-Se-methyl-L-seleno cysteine were identibed in garlic and onion by HPLC-ICP-MS and ES-MS/MS [80]. Selenomethionine is the primary species found in all types of nuts (19D25 percent of the total Se) [30], sunBower [81], and mushrooms [36, 37], The distribution of Se among different fractions (lipid extract, low molecular weight, and protein fractions) of nuts and speciation analysis was studied [30]. Selenium was not detected in any of the lipid extracts obtained from the different types of nuts [30], Results obtained for Brazil nuts by SEC with on-line ICP-MS detection showed that approximately 12 percent of total Se was weakly bound to proteins [30],... 

Y. Ogra, K. Ishiwata, J. Ruiz Encinar, R. Lobinski, K. Suzuki, Speciation of selenium in selenium-enriched shiitake mushroom, Lentinula edodes, Anal. Bioanal. Chem., 379 (2004), 861D 866. 

L. Racz, A. Bumbalova, M. Harangozo, J. Tolgyessy, O. Tomecek, Determination of cesium and selenium in cultivated mushrooms using radionuclide X-ray fluorescence technique, J. Radioanal. Nucl Chem., 245 (2000), 611-614. 

J. T. van Elteren, U. D. Woroniecka, K. J. Kroon, Accumulation and distribution of selenium and cesium in the cultivated mushroom Agaricus bisporus - a radiotracer-aided study, Chemosphere, 36 (1998), 1787-1798. 

S. Piepponen, M. J. Pellinen, T. Hattula, The Selenium of Mushrooms, in B. Peter, S. Peter (eds), Trace Element Analytical Chemistry in Medicine and Biology, Vol. 3, Walter de Gruyter, Berlin 3 (1984), pp. 159-166. 

Gergely, V. et al. Selenium speciation in Agaricus bisporus and Lentinula edodes mushroom proteins using multi-dimensional chromatography coupled to inductively coupled plasma mass spectrometry. J. Chromatogr. A. 2006, 1101,94-102. 

Se-enriched plants may be divided into two broad groups [199], i.e. selenium accumulators and/or selenium non-accumulators. Selenium-accumulating plants can be divided into three subgroups selenite-accumulators (broccoli and cucumber), selenomethionine accumulators (grains such as wheat, and mushrooms) and iS e-methyl selenomethionine accumulators (garlic and onion) [200]. 

See also Aflatoxin Algae Ammonia Asbestos Benzene Hexachloride, Mixed Isomers Brodifacoum Carbamate Pesticides Carbon Monoxide Castor Bean Copper Coumarins DDT (Dichlorodiphenyltrichloroethane) DEET (Diethyltoluamide) Dichlorvos Dieldrin Ethylene Glycol Hydrogen Sulfide Lead Malathion Methane Molybdenum Mushrooms, Coprine Mushrooms, Cyclopeptide Mycotoxins Nitrites Oleander Organochlorine Insecticides Organophosphates Paraquat Parathion Pyrethrins/Pyrethroids Selenium Sodium Strychnine Sulfur Dioxide Thallium Warfarin. 

Figure 20. Se -edge XANES spectra of (A) Se-containing model compounds (a) Se042 (aq), (b) SeC>32 (aq), (c) selenomethionine (aq), (d) elemental (red) selenium (monoclinic) (B) (a) Se in Kesterson Reservoir soil at depth of 0 to 0.05 m (340 ppm Se), (b) Se in Kesterson Reservoir soil at depth of 0.05 to 0.15 m (40 ppm Se), (c) Se in mushroom (Agaricus bernardii) collected adjacent to the reservoir (500 ppm Se). Linear combination fits of the Se K-XANES of the three Kesterson samples resulted in the following components (a) 97% elemental Se + 3% aqueous selenite (b) 86% elemental selenium + 14% aqueous selenite (c) 71% selenomethionine + 11% aqueous selenite + 18% selenocystine. Data were taken on SSRL beam line 4-3. (after Pickering et al. 1995)...

In terms of functional food, some beneficial mushroom characteristics can be enhanced by the addition of essential elements. Selenium-enriched button mushrooms, shiitake, or oyster mushrooms naturally are preventive to a spectrum of diseases. Selenium is vital for normal functioning of the body and for protection of DNA, proteins, and lip-... 

Falandysz, J. 2008. Selenium in edible mushrooms. Journal of environmental science and health. Part C, Environmental carcinogenesis and ecotoxicology reviews, 26(3), 256-99. 

The foods that are rich in selenium are mainly marine fish, crustaceans and molluscs (such as oysters and prawns), freshwater fish and offal (mainly kidneys). Eggs also have relatively high levels most selenium is contained in the yolk. The content of selenium in mflk, dairy products and meat is lower and is highly dependent on the animal nutrition. Concentrations of selenium in fruits and vegetables, except garhc, are very low (<0.02 mg/kg). Mushrooms contain selenium at the level of 0.03-1.4 mg/kg. The selenium content in foods of plant origin is fundamentally influenced by the selenium content in the soil or fertiliser used and its availability to the plant The concentration of selenium in foods of animal origin is determined by the selenium content in the animal feed. Some pet foods are dehberately fortified with selenium compounds. 

Most cooking procedures have been found to cause little loss of selenium from most foods, except that the boiling of asparagus and mushrooms resulted in significant losses of the... 

Khedr AA, Abbas MA, Abdel Wahid AA, Quick WP, Abogadallah GM (2003) Prohne induces the expression of salt-stress-responsive proteins and may improve the adaptation of Pancratium maritimum L. to salt-stress. J Exp Bot 54 2553-2562 Laszlo R, Csaba H (2004) Iodine and selenium intake from soil to cultivated mushrooms, 2nd international symposium - trace elements in food, Brussels, Belgium, 7-8 October, Abstracts, European Commission Joint Research Centre, Brussels, Belgium, p 21 Lemly AD (1993) Guidelines for evaluating selenium data from aquatic monitoring and assessment studies. Environ Monit Assess 28 83-100... 

Werner AR, Beelman RB (2001) Growing selenium-enriched mushrooms as ingredients for functional foods or dietary supplements. Int J Med Mushrooms 3 112-120... 

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