• Title/Summary/Keyword: sodium selenate

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Effect of Sodium Selenate Supplied Condition by Fertigation on the Growth and Content of Minerals, Ascorbic acid, Nitrate, and Selenium of Some Western Vegetables (Sodium selenate의 토양관주 처리방법에 따른 서양채소의 생육과 무기성분, ascorbic acid, nitrate 및 셀레늄 함량에 미치는 영향)

  • Lee, Sung-Jin;Kang, Ho-Min;Kim, Il-Seop
    • Journal of Bio-Environment Control
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    • v.17 no.1
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    • pp.43-50
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    • 2008
  • This study was conducted to investigate the proper supplied conditions of sodium selenate supplied by fertigation to improve functionality of major western vegetables; beet, broccoli, cabbage lettuce, celery, and parsley in highland. In this work, the growth and content of minerals, ascorbic acid, nitrate, and selenium were measured in western vegetables that treated sodium selenate by different concentration, treatment time and treatment frequency. While there was not different in early growth of some western vegetables among different concentration of sodium selenate; 1,2, 5 and $20\;mg{\cdot}L^{-1}$, at 20 days after treatment, the fresh weight was reduced 33% at cabbage lettuce,47% at broccoli, and 74% at parsley compared control in $5\;mg{\cdot}L^{-1}$ treatment. But the fresh weight of beet and celery reduced just 20% and 15% compared control in even $20\;mg{\cdot}L^{-1}$. The ascorbic acid of cabbage lettuce, celery, and beet increased as sodium selenate concentration increased, so that of cabbage lettuce showed 1.2 times compared control in $20\;mg{\cdot}L^{-1}$ treatment and also that of beet and celery increased 10%. But the ascorbic acid of broccoli and parsley was not influenced by treated sodium selenate. As the concentration of sodium selenate increased, the nitrate contents decreased regardless of crops compared control. This reduced effect of nitrate was highest in cabbage lettuce, followed by beet and celery. The mineral contents, such as K, Ca, and Mg, decreased in all crops, as the concentration of sodium selenate increased. The potassium content showed an obvious negative correlationship with the concentrations of sodium selenate regardless of crops, but the magnesium and calcium content did not show significant difference between treatments. The selenium content increased in proportion as increasing sodium selenate concentrations. The broccoli, celery and parsley treated $20\;mg{\cdot}L^{-1}$ sodium selenate showed 24.4 times, 76.4 times, and 560 times higher than control, respectively. When the sodium selenate supplied to some western vegetables in different growth stage, the selenium content increased 1.3 times and 1.4 times higher in early stage than in late stage in cabbage lettuce and broccoli, respectively. However in parsley and celery, the selenium content showed the highest in middle stage. The selenium content increased in proportion as increasing the sodium selenate treatment frequency, but in above 10 times treatment, the increased effect alleviated in parsley, celery, and cabbage lettuce. On the contrary, the selenium content of broccoli increased constantly as treatment frequency increased.

Investigation of Selenium Distribution in Highland Province of Gangwon and Effect of Sodium Selenate Treatment on the Selenium Content and Growth of Some Western Vegetables Grown by Ferigation (고랭지 지역의 셀레늄 분포 조사 및 양채류 관비재배시 Sodium Selenate 처리가 생육과 셀레늄 함량 미치는 영향)

  • Lee, Sung-Jin;Kang, Ho-Min;Kim, Il-Seop
    • Journal of Bio-Environment Control
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    • v.17 no.1
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    • pp.38-42
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    • 2008
  • This study was conducted to investigate distribution of selenium in Gangwon highland Province and to confirm the effect of sodium selenate added nutrient solution on the selenium content of some western vegetables; beet, broccoli, cabbage lettuce, celery, and parsley. The contents of selenium were distributed from 0.024 to $0.038\;mg{\cdot}kg^{-1}$ in soil of Gangwon highland province. As the selenium content in soil increased, the selenium content in broccoli was increased in highland of Gangwon province. The selenium content of broccoli showed $10.5{\sim}17.9\;mg{\cdot}kg^{-1}DW$ 1311owe4 by celery ($6.02\;mg{\cdot}kg^{-1}DW$). Beet, cabbage lettuce, and parsley contained just about $1\;mg{\cdot}kg^{-1}DW$ in highland of Gangwon province. Some western vegetables grown by fertigation supplied $2\;mg{\cdot}L^{-1}$ sodium selenate were shown better growth and higher selenium content than those of $0\;mg{\cdot}L^{-1}$ sodium selenate supplied treatment(control). The selenium contents of western vegetables supplied $2\;mg{\cdot}L^{-1}$ sodium selenate in fertigation culture for 60 days were $76.2\;mg{\cdot}L^{-1}$ in broccoli, $69.1\;mg{\cdot}L^{-1}$ in parsley, $63.2\;mg{\cdot}L^{-1}$ in celery, $54.2\;mg{\cdot}L^{-1}$ in beet, $8.3\;mg{\cdot}L^{-1}$ in cabbage lettuce. Those selenium content of broccoli, celery, and parsley treated $2\;mg{\cdot}L^{-1}$ sodium selenate were followed the order 4.2 times, 10.5 times and 62.5 times higher in compared to control.

Effects of Selenate Ion Concentration in Nutrient Solution on the Growth and Essential Oil Content of Wormwood( Artemisia absinthium L.) (배양액 내의 Selenate 이온농도가 웜우드(Artemisia absinthium L.)의 생육 및 정유함량에 미치는 영향)

  • Park, Kuen-Woo;Lee, Yun-Jeong;Jeong, Jin-Cheol
    • Journal of Bio-Environment Control
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    • v.6 no.4
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    • pp.264-269
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    • 1997
  • This study was conducted to evaluate appropriate selenate ion concentration for the production of high functional vegetables. Sodium selenate was treated 0, 2, 4, 6 and 8mg/$\ell$ using herb nutrient solution developed by European R & D Vegetable Center in Belgium. Low level of Na2se04 concentration increased the growth of wormwood, but high selenate concentration decreased the growth. Total chlorophyll content was increased by sodium selenate. The higher selenate ion concentration in the nutrient solution, the more total chlorophyll content was. The vitamin C content in wormwood was high at 2 and 4mg/$\ell$ treatment, showing good growth, at higher concentration, however, the vitamin C content decreased. At 4mg/$\ell$ selenate ion concentration, essential oil content of wormwood was best. But higher selenate ion concentration decreased essential oil content. The uptake of Se by the plant increased with the increase of selenate ion concentration.

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Effects of Selenium Application Dosage and Methods on Selenium and Mineral Contents in Garlic (셀레니움 처리농도와 방법이 마늘의 셀레니움과 무기성분 함량에 미치는 영향)

  • Hwang, Jae Moon;Lee, Mi-Gyung;Ha, Hyun Tae
    • Horticultural Science & Technology
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    • v.19 no.4
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    • pp.465-470
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    • 2001
  • This study was carried out to investigate the effect of application dosage and methods of selenium (Se) on mineral contents in garlic. The content of Se was higher in upland than paddy fields. Application of higher dosage of Se salt increased higher content of Se in leaf sheath and bulb of garlic. Se was detected also in the non-treated plot but its amount was negligible. Absorption of Se in garlic was higher when Se was applied in the form of sodium selenate. Foliar application of sodium selenate enriched Se content in garlic as compared with the soil dressing. However, Se content in garlic fluctuated depending on growing conditions. Se content of garlic grown on the artificial soil (vermiculite and commercial soil) in the plastic house was higher than the garlic grown in the paddy field. The growth of garlic was not affected by types, dosage and application methods of selenium. Mineral contents in garlic such as Mg, S and K were higher in the selenium treatment than control. However, this trend was not evident according to dosages of selenium fertilizers.

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Refining of Manganese from Anode Slime of Electrolytic Zinc and Waste Dry Cell (전해아연의 Anode Slime과 건전지의 폐기물로부터 금속망간의 회수)

  • Yoon, Byoung-Ha;Kim, Dai-Ryong
    • Journal of the Korean institute of surface engineering
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    • v.19 no.1
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    • pp.13-19
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    • 1986
  • Manganese in the Anode slime and the paste-positive material of waste-dry cell was recovered by leaching with the hydrochloric acid solution. The impurities (Zn, Fe, Pb), co-leached with manganese were removed from the leached solution prior to electrolysis by hydrometallurgical techniques such as the neutralization with ammonium hydroxide and cementation on manganese powder. The electrodeposition of manganese from the purified chloride solution with sodium selenate was performed. Cathode current efficiency was found to be affected significantly by the concentration of sodium selenate and ammonium chloride salt, bath temperate, current density and PH. The current efficiency of about 88.7% was obtained by electrolysis manganese chloride solution with sodium selenate (0.1/g) at 10$^{\circ}C$.

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Effects of selenate and L-glutamate on the growth of Mycobacterium tuberculosis complex

  • Kim, Seung-Cheol;Kim, Jin-Sook;Monoldorova, Sezim;Cho, Jang-Eun;Hong, Minsun;Jeon, Bo-Young
    • Korean Journal of Veterinary Service
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    • v.41 no.4
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    • pp.239-244
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    • 2018
  • Mycobacterium tuberculosis (M. tuberculosis) complex is the causative agent of tuberculosis (TB) in humans and bovine TB in mammalian hosts and grows very slowly. Selenium is a central molecule in nitrogen metabolism and an essential ingredient for all living cells and glutamic acid. The effects of selenium on the growth of M. tuberculosis, a representative slow-growing Mycobacterium species, were investigated and measured using the BacT Alert 3D System (MB/BacT System). Sodium selenate, at a final concentration of $10{\mu}g/mL$, reduced the average time-to detection (TTD) to 197.2 hours (95% confidence interval (CI), 179.6~214.8) from 225.1 hours (95% CI, 218~232.0) in the control culture media (P<0.05). The TTD did not increase with $\text\tiny{L}$-glutamate concentrations up to $10{\mu}g/mL$, but a significant reduction in the TTD was observed in the presence of $20{\mu}g/mL$ ${\text\tiny{L}}$-glutamate in culture media (P<0.05). In conclusion, selenate and ${\text\tiny{L}}$-glutamate enhance the growth of M. tuberculosis.

Production and Characterization of Selenium Peptide from Saccharomyces Cerevisiae (효모를 이용한 selenium peptide 생산 및 특성 연구)

  • 김은기;김영옥;이정옥;이백석
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.30 no.1
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    • pp.73-77
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    • 2004
  • Selenium containing peptide was produced by culturing yeast with selenium, Selenium was broadly incorporated in the various size of proteins based on the GPC analysis of the total yeast protein. The ratio of selenium to protein increased with the concentration of added selenium in the culture medium. Antioxidant activity (glutathione peroxidase-like activity) was proportional to the concentration of selenium concentration in the peptide. Different size of proteins were obtained by hydrolyzing the total yeast protein by protease XIV. Average molecular weight of selenium peptide was analyzed by GPC. Glutathione peroxidase (GPx) activity of the selenium peptide increased as the size of peptide decreased. Sodium selenite had strong inhibition on the yeast growth than sodium selenate. The ratio of selenium to protein was higher with sodium selenate than with sodium selenite. These results showed the potentials of selenium peptide production by yeast cultivation.

INORGANIC SELENIUM FOR SHEEP I. SELENIUM BALANCE AND SELENIUM LEVELS IN THE DIFFERENT RUMINAL FLUID FRACTIONS

  • Serra, A.B.;Nakamura, K.;Matsui, T.;Harumoto, T.;Fujihara, T.
    • Asian-Australasian Journal of Animal Sciences
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    • v.7 no.1
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    • pp.83-89
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    • 1994
  • The effects of inorganic selenium (Se), selenate and selenite on Se balance levels in the different ruminal fluid fractions were studied using Japanese Corriedale wethers with an average body weight of 47 kg. A $3{\times}3$ Latin square design was used with three animal, three periods and three treatments. In each period, there was 7 d dietary adjustment followed by 5 d total collection of urine and feces. Ruminal fluid samples were obtained at 0, 1, 3, 5 and 7 h postprandially on the final day of the collection period. The three dietary treatments were: (1) without Se supplementation (control); (2) with Se supplement as sodium selenate; and (3) sodium selenite at a rate of 0.2 mg Se/kg dietary DM. The basal diet was timothy hay (Phleum pratense L.) fed 2% of body weight/d. Results indicated that Se balance were higher (p < 0.05) for those animals under supplementation than those animals under control. Overall data gathered showed a similar digestion balance of selenate and selenite in sheep. Inorganic Se, both selenate and selenite produced positive Se contents of the ruminal feed particles and protozoa. Bacterial Se increased (p < 0.05) on the first three hours post-prandially in Se supplemented diets. Gross ruminal fluid fraction, although there was improvement on their Se content under the supplemented diets, the changes were insignificant over the control. free inorganic Se and Se in soluble protein of the ruminal fluid were not significantly different for selenate and selenite. Most of the Se in the ruminal fluids of the animals under supplementation were insoluble, indicating the influence of rumen environments on Se bioavaliability.

Status of Selenium Contents and Effect of Selenium Treatment on Essential Oil Contents in Several Korean Herbs (한국의 몇 가지 허브의 셀레늄 함유량 및 셀레늄 처리가 정유 함량에 미치는 영향)

  • Lee, Moon Jung;Lee, Gung Pyo;Park, Kuen Woo
    • Horticultural Science & Technology
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    • v.19 no.3
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    • pp.384-388
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    • 2001
  • The selenium (Se) contents of 20 herbs, harvested in three areas in Korea, were analyzed. Many herbs had no Se. Angelica ($138.4{\mu}g \;Se{\cdot}kg^{-1}$ FW), caraway ($167.8{\mu}g \;Se{\cdot}kg^{-1}$ FW), chamomile ($116.6{\mu}g \;Se{\cdot}kg^{-1}$ FW), marjoram (158.7 and $132.6{\mu}g\;Se{\cdot}kg^{-1}$ FW), and oregano ($62.5{\mu}g\;Se{\cdot}kg^{-1}$ FW) accumulated Se as higher concentration compared with other plants. The Se content of herbs was dependent on the species, cultivars and areas. The status of Se uptake by herbs was investigated according to Se concentrations in hydroponics. During four weeks, before harvest of several herbs in greenhouse, sodium selenate ($Na_2SeO_4$) was added to the nutrient solution at concentrations of 2, 4, 6, and $8mg{\cdot}L^{-1}$. Field-mint accumulated Se too high, but external symptom of Se toxicity was not found. Essential oil content was generally proportionated to treated-Se concentration. The essential oil contents in basil and balm increased two to three times higher by sodium selenate treatment compared to non-treatment, but they did not show any linear relationship between essential oil contents and treated-Se concentration.

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Effect of Selenium on Storability of Basil (Ocimum basilicum) in Hydroponics (양액재배 시 selenium의 첨가가 basil의 저장에 미치는 영향)

  • Kim, Min-Soon;Park, Kuen-Woo
    • Horticultural Science & Technology
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    • v.19 no.1
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    • pp.87-91
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    • 2001
  • The aim of this study was to select the proper temperature for MA storage and to study the effect of sodium selenate ($Na_2SeO_4$) on storability of hydroponically grown sweet basil. Sweet basil was cultured with 1 fold using the nutrient solution developed by European Vegetable R & D Center in Belgium. Three-weeks before harvest, sodium selenate ($Na_2SeO_4$) was treated 2, 4, 6 and $8mg{\cdot}L^{-1}$ in the nutrient solution. Although electrolyte leakage of sweet basil was remarkably increased because of chilling injury at $5^{\circ}C$ MA storage, storage life was extended for three more days by selenium supplement. The weight loss was lower at $10^{\circ}C$ than at $5^{\circ}C$ and vitamin C content was higher at $10^{\circ}C$ than $5^{\circ}C$ storage treatment. Se treatment increased vitamin C content and decreased ion leakage in the plant. Accumulation of Se in the leaves of basil was increased with Se concentration of the nutrient solution. Se accumulation was $66{\mu}g{\cdot}g^{-1}$ dry mass at $2mg{\cdot}L^{-1}$ treatment and $422{\mu}g{\cdot}g^{-1}$ dry mass at $8mg{\cdot}L^{-1}$ treatment. The results suggest that storage at $10^{\circ}C$ is good for reduction of chilling injury and maintain marketability of basil. Less than $2mg{\cdot}L^{-1}$ sodium selenate treatment is acceptable for human health.

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