Selenium uptake by edible plants from enriched peat
| Autor: | Albert Morell-Garcia, Virginia Funes-Collado, Roser Rubio, José Fermín López-Sánchez |
|---|---|
| Přispěvatelé: | Universitat de Barcelona |
| Rok vydání: | 2013 |
| Předmět: |
Plant growth
Peat media_common.quotation_subject Plantes comestibles chemistry.chemical_element Horticulture Selenate Torba chemistry.chemical_compound Selenium Seleni Botany Food science Nutrició media_common Nutrition Chemistry Extraction (chemistry) food and beverages Enzymes Speciation Edible plants Amino acids Aminoàcids Enzims Digestion |
| Zdroj: | Dipòsit Digital de la UB Universidad de Barcelona Recercat. Dipósit de la Recerca de Catalunya instname |
| Popis: | As a constituent of selenoproteins, selenium (Se) is considered an essential element for human health. The main way that Se enters the body is via the consumption of vegetables, whose concentration of this element depends on soil Se content. We grew cabbage, lettuce, chard and parsley, in peat enriched in Se by means of the additive Selcote Ultra ® and Na 2 SeO 3 and Na 2 SeO 4 . Total Se in plants was determined by acidic digestion and Se speciation by an enzymatic extraction. Both were measured by ICP/MS. The concentration ranges were between 0.1 mg Se kg −1 and 30 mg Se kg −1 for plants grown in Selcote Ultra ® media, and between 0.4 mg Se kg −1 and 1606 mg Se kg −1 for those grown in peat enriched with Se sodium salts. We found Se (IV), Se (VI) and SeMet in all the extracts. Peat fortified with Selcote Ultra ® gave slightly higher Se concentration than natural content values. For plants grown with selenium sodium salts, Se content increases with the Se added and part of the inorganic Se was converted mainly to SeMet. A high Se fortification can damage or inhibit plant growth. Cabbage showed the greatest tolerance to Se. |
| Databáze: | OpenAIRE |
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