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08-07-2020· Selenium content in food is widely different depending on its concentration in the soil in a given geographical area, the ability of plants to accumulate it, as well as animal feed. Other components such as cultivation, climatic conditions, breeding methods, and methods of preparing food products may also have an effect on Se content in food [ 3 ].
01-07-2021· Selenium is considered a beneficial element for higher plants, enhancing the antioxidant metabolism, photosynthesis, secondary metabolites and carbohydrates in plant leaves (Andrade et al., 2018). Se application at low concentration enhance photosynthesis in plants due to increase protection of antenna complex.
Selenium concentration in St. John's wort (Hypericum ... The concentration of Se in unsprayed plants was from 20ngg⁻¹ to 120ngg⁻¹. The concentration of Se in the organs of plants foliarly sprayed with Se ranged from 1000ngg⁻¹ to 12,000ngg⁻¹, the highest concentration being detected in plants grown under reduced levels of UV-B radiation.
Of the analyzed 26 medicinal and aromatic plants, the highest Se concentration (1133 microg kg-1) was found in sweet basil (Ocimum basilicum L.) and the lowest in sumac (Rhus coriaria L.) fruits ...
Selenium concentration in St. John's wort ( Hypericum perforatum L.) herb after foliar spraying of young plants under different UV-B radiation levels Food Chemistry, 2009 Mateja Germ
A total of 896 maize grain samples were obtained from all the maize silos throughout South Africa (231 silos) and analysed for selenium (Se) content. This information was used to compile a regional distribution map of the Se content of maize grain in South Africa. Of the samples analysed, 94% contained below 50 µg selenium/kg DM and can thus be classified as deficient from an animal and …
15-11-2009· The concentration of Se in the organs of plants foliarly sprayed with Se ranged from 1000 ng g −1 to 12,000 ng g −1, the highest concentration being detected in plants grown under reduced levels of UV-B radiation.
Spectrofluorimetric determination of Se in 148 samples of 44 plant species revealed that the majority of the plants contained Se at a level from several to several tens of μg/kg dry weight (d.w.). A relatively high Se concentration, in the order of 50 μg/kg d.w., was found in …
soil was within the range of 0.100-0.300 mg kg -1. Selenium content in the soil depended on soil texture, pH, exchangeable bases and content of plant. available potassium. An average content of ...
22-11-2018· With vascular-specific expression of NRT1.1B, the grain Se concentration was 1.83-fold higher than that of wild type. These results strongly demonstrate that NRT1.1B holds great potential for the improvement of Se concentrations in grains by facilitating SeMet translocation, and the findings provide novel insight into breeding of Se-enriched rice varieties.
Selenium Rich spices and herbs - top 34 sources of Selenium in spices and herbs. The 34 spices and herbs range from 208.1mcg to 0mcg per 100g, for Selenium content.
Selenium concentration in St John's wort (Hypericum . Nov 15, 2009 The concentration of Se in unsprayed plants was from about 20 ng g −1 to 120 ng g −1 ()The concentration in foliarly sprayed plants was in the range from about 1000 ng g −1 to 12,000 ng g −1, lowest in stem, higher in flowers and with the highest concentration in the leaves ()No visual symptoms of Se toxicity appeared ...
3.1 Selenium concentration in potato plants 29. 4 3.2 Response of growth, yield and carbohydrates to selenium application 30 3.3 Impact of selenium on the quality of table potato tubers 32 3.3.1 Glycoalkaloid concentration in immature tubers 32 3.3.2 Selenium stability during storage 33
Hartikainen H, Xue T, Piironen V (2000) Selenium as an anti-oxidant and pro-oxidant in ryegrass. Plant Soil 225:193–200 CrossRef Google Scholar. Hasanuzzaman M, Hossain MA, Fujita M (2010) Selenium in higher plants: physiological role, antioxidant metabolism and abiotic stress tolerance.
Selenium is required in the diet of most animals. Concentrations of 0.3 ppm are recommended for most food producing livestock. Acute selenosis has been associated with ingesting large amounts of selenium such as would happen if animals eat indicator plants (>400 ppm). Oral selenium doses of between 1 and 5 mg/kg body weight are considered toxic.
The main food supplies are plants and animals, which are significant sources of these minerals. Studies on determining mineral compositions of herbs, spices and (PDF) Selenium concentrations of selected medicinal and aromatic plants in Turkey | Ufuk Koca - Academia.edu
Selenium contents of the most used parts of these plants were analyzed by ICP-OES (Varian Vista-Pro, Australia). Of the analyzed 26 medicinal and aromatic plants, the highest Se concentration (1133 μg kg-1) was found in sweet basil (Ocimum basilicum L.) and …
Certain plants are known to accumulate selenium from soils and to concentrate it in their tissues. Plants that accumu late selenium may be divided into two categories: obligate and facultative accumulators (Kingsbury, 1964). A third category, nonaccumulators, in cludes all plants that do not accumulate selenium.
St. John's wort (Hypericum perforatum L.) was grown under different levels of UV-B radiation, with selenium (10 mg l-1 Se applied by foliar spraying in the form of sodium selenate) or without foliar Se application. The different levels of UV-B radiation comprised an enhanced level simulating 17% ozone depletion, ambient level, and a reduced level of UV-B radiation.
18-02-1985· low-selenium concentrations in the plants)!n contrast, aerated, neutral-to-alkaline soils are unlikely to produce selenium-deficient plants. Selenium in Water Selenium occurs as a minor constituent in drinking water in a concentration range of 0.1 to 100 pig/L.' Samples rarely exceed the 10 pig/L upper limit established by the United
plants. The selenium compounds in the plants that can cause vari ous disease syndromes in livestock are not known. Only a limited amount of data are available on the compounds which are present in indicator plants and those present in grains and grasses. …
The aim of this study was to evaluate the level of selenium (Se) in common raw plant materials (herbs, leaves, flowers, fruits, and roots) obtained from medicinal plants cultivated in Poland. Furthermore, the relationship between the morphological part of a plant and its species was examined, and the concentration of Se in it was measured.
Effect of Selenium on Elemental Concentration and Antioxidant Enzymatic Activity of Tomato Plants R. G. Castillo-Godina 1, R. Foroughbakhch-Pournavab 1, and A. Benavides-Mendoza 2* ABSTRACT Selenium is an essential element for humans, theref ore, adding it to plants is convenient for biofortification.
Selenium contents of the most used parts of these plants were analyzed by ICP-OES (Varian Vista-Pro, Australia). Of the analyzed 26 medicinal and aromatic plants, the highest Se concentration (1133 microg kg-1) was found in sweet basil (Ocimum basilicum L.) and the lowest in sumac (Rhus coriaria L.) fruits (11 microg kg(-1)).
Selenium concentration in St. John's wort (Hypericum . Nov 15, 2009 · Selenium concentration in St. John's wort (Hypericum perforatum L.) herb after foliar spraying of young plants under different UVB radiation levels. Author links open overlay panel Mateja Germ a Vekoslava Stibilj b Samo Kreft c Alenka Gaberščik a Franja Pajk d Ivan Kreft a.
22-11-2018· SeMet concentration in xylem sap was used as an indicator of the capacity of SeMet translocation from roots to shoots, and the results showed that the SeMet concentration in xylem sap collected from OE-31 and OE-72 was 1.50- and 1.65-fold higher, respectively, than that from the wild-type plants (Figure 5a).