亜セレン酸塩、亜セレン酸の
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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/10/02 02:07:44」(JST)
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English Journal
- Preparation and antibacterial activity studies of degraded polysaccharide selenide from Enteromorpha prolifera.
- Lü H1, Gao Y2, Shan H3, Lin Y3.Author information 1College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China. Electronic address: htlu6@sina.com.2College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao 266109, China.3College of Animal Science and Technology, Qingdao Agricultural University, Qingdao 266109, China.AbstractPolysaccharide extracted from Enteromorpha prolifera possessed excellent biological activities, but its molecular weight was greatly high which influenced the activity. Organic Se had higher biological activities and was safer than inorganic Se species. In the present study, degraded polysaccharide selenide (Se-LEP) was synthesized from sodium selenite and degraded polysaccharide (LEP) with the catalysis of nitric acid. The preparation conditions of LEP and Se-LEP were optimized by orthogonal experiments. The selenite ester group was formed, and the selenium content was 1335.27µg/g. The thermal stability of Se-LEP decreased. LEP had less inhibitory effects on bacteria and plant pathogenic fungi. Se-LEP had stronger inhibitory effect on Eschetichia coli, and weaker inhibitory effect on Staphylococcus aureus than polysaccharide selenide (Se-EP). Se-LEP also had better inhibitory effects on plant pathogenic fungi.
- Carbohydrate polymers.Carbohydr Polym.2014 Jul 17;107:98-102. doi: 10.1016/j.carbpol.2014.02.045. Epub 2014 Feb 22.
- Polysaccharide extracted from Enteromorpha prolifera possessed excellent biological activities, but its molecular weight was greatly high which influenced the activity. Organic Se had higher biological activities and was safer than inorganic Se species. In the present study, degraded polysaccharide
- PMID 24702923
- Fate of selenium in a small urban watershed.
- Devitt DA1, Wright LE, Shanahan SA, Hausrath E.Author information 1School of Life Sciences, University of Nevada Las Vegas, Las Vegas, NV, USA, dale.devitt@unlv.edu.AbstractA field study was conducted on a small urban watershed (residential and golf course dominated) in southern Nevada to assess the concentration and speciation of selenium (Se) in a series of drain lines and monitoring wells and to quantify the mass discharge of Se from the drain system. Water samples were collected on a monthly basis and analyzed for total Se, selenate (SeO4 (=)) and selenite (SeO3 (=)). In addition, where possible, flow was assessed as was, temperature, redox potential, pH, dissolved oxygen (DO) along with all major cations and anions. The data were then modeled with PhreeqC to identify selenium speciation. Results revealed a SeO4 (=) dominated system with SeO4 (=) concentrations ranging from 13 to 62 ppb. In the monitoring wells, 66 % of the variation in the total Se concentration could be described based on depth to groundwater, temperature and sulfate concentrations (P < 0.001). In particular, higher total Se concentrations were predicted for shallower depth to groundwater, suggesting the solubilization of Se evapo-concentrates near the surface could be reduced by lowering water tables. The highest of all correlations was found between SeO4 (=) concentrations (↑) and the sodium (↑) and DO (↑) concentrations in the monitoring wells (R (2) = 0.77, P < 0.001). An excellent curvilinear relationship was found between total Se and the electrical conductivity in the water (R (2) = 0.73, P < 0.001). Based on the Se data and time line identified in this study, high concentrations of Se could be expected to drain from this area for many years to come, with salinity acting as a good proxy for Se concentration. In the drain lines, Se concentrations were found to be invariant to flow (P > 0.05). Flow discharge from the main drain system to the Las Vegas Wash was estimated at 559 acre feet during the 1 year study period. This flow was estimated to carry 4,203 Mg of salts 6.71 Mg of nitrate-N and 27.1 kg of total Se.
- Environmental monitoring and assessment.Environ Monit Assess.2014 May;186(5):3181-97. doi: 10.1007/s10661-013-3609-1. Epub 2014 Jan 11.
- A field study was conducted on a small urban watershed (residential and golf course dominated) in southern Nevada to assess the concentration and speciation of selenium (Se) in a series of drain lines and monitoring wells and to quantify the mass discharge of Se from the drain system. Water samples
- PMID 24415064
- Photocatalytic removal of selenite and selenate species: effect of EDTA and other process variables.
- Labaran BA, Vohra MS.AbstractTiO2-assisted photocatalysis was employed for the removal of aqueous phase selenite and selenate species in conjunction with EDTA as a hole (h+) scavenger. Findings from the binary selenite/EDTA and selenate/EDTA systems showed high selenite and selenate removal at pH 4 and pH 6, with faster removal kinetics noted for the selenite species compared with the selenate species that showed a gradual change over the reaction course. The noted removal of selenite and selenate was attributed to their reduction by the conduction band electrons (e-). The effect of pH studies indicated high selenite, selenate, and EDTA removal in the acidic pH range, with the following specific trend: pH 4 > pH 6 > pH 12. Different from the EDTA studies, the use of thiocyanate alone did not initiate reduction of selenium oxyanions, and hence, its role as a hole scavenger in the present systems was not evident. However, the addition of EDTA to respective selenite/selenate/thiocyanate system at pH 4 did yield near complete removal of selenite and selenate species. The marginal role of thiocyanate as a hole scavenger was attributed to its negligible adsorption onto TiO2 surface. Furthermore, at pH 4 and within 3 h reaction time, enhanced selenate removal was noted with an increase in its initial concentration from 20 to 100 ppm, with near complete selenate removal noted for both cases. In general, findings from the present work indicate that both selenite and selenate can be successfully removed from the aqueous phase employing the TiO2-mediated photocatalysis and h(+)-scavenging agent EDTA.
- Environmental technology.Environ Technol.2014 May-Jun;35(9-12):1091-100.
- TiO2-assisted photocatalysis was employed for the removal of aqueous phase selenite and selenate species in conjunction with EDTA as a hole (h+) scavenger. Findings from the binary selenite/EDTA and selenate/EDTA systems showed high selenite and selenate removal at pH 4 and pH 6, with faster removal
- PMID 24701904
Japanese Journal
- Effects of culture conditions of Pseudomonas aeruginosa strain RB on the synthesis of CdSe nanoparticles
- Ayano Hiroyuki,Kuroda Masashi,Soda Satoshi [他]
- Journal of bioscience and bioengineering 119(4), 440-445, 2015-04
- NAID 40020435242
- Acceleration effect of sodium selenite on yeast growth and fermentative capability
- , , , , , , , ,
- The Journal of General and Applied Microbiology 61(1), 27-30, 2015
- NAID 130005061413
- Glutathione-Dependent Cell Cycle G₁ Arrest and Apoptosis Induction in Human Lung Cancer A549 Cells Caused by Methylseleninic Acid : Comparison with Sodium Selenite
- Okuno Tomofumi,Honda Eri,Arakawa Tomohiro [他]
- Biological & pharmaceutical bulletin 37(11), 1831-1837, 2014-11
- NAID 40020248135
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★リンクテーブル★
| リンク元 | 「亜セレン酸塩」「亜セレン酸」「selenious acid」 |
| 拡張検索 | 「sodium selenite」 |
「亜セレン酸塩」
- 英
- selenite
- 関
- 亜セレン酸、亜セレン酸ナトリウム
「亜セレン酸」
「selenious acid」
- 関
- selenite
「sodium selenite」
- 関
- selenite