chelating agent

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chelator

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出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2017/05/30 11:38:28」(JST)

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英文文献

  • Fabrication of solid lipid microcapsules containing ascorbic acid using a microfluidic technique.
  • Comunian TA1, Abbaspourrad A2, Favaro-Trindade CS3, Weitz DA2.Author information 1Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Av. Duque de Caxias Norte, 225, CP 23, CEP 13535 900 Pirassununga, São Paulo, Brazil. Electronic address: talita.comunian@usp.br.2Harvard University, School of Engineering and Applied Sciences and Department of Physics, Cambridge, MA 02138, United States.3Universidade de São Paulo, Faculdade de Zootecnia e Engenharia de Alimentos, Av. Duque de Caxias Norte, 225, CP 23, CEP 13535 900 Pirassununga, São Paulo, Brazil.AbstractThe importance of ascorbic acid (AA) in the human diet has motivated food researchers to develop AA-fortified food products. However, this compound is very unstable. The aim of this work was to produce solid lipid microcapsules (SLMs) loaded with AA using microfluidic technology. The morphology of the SLMs was analysed by optical, scanning electron and confocal microscopy. We determined the encapsulation efficiency, particle size and stability of the encapsulated material. Two different means of enhancing the encapsulation efficiency and stability of AA were demonstrated: a pore blocking method and a micromolecule-chelating agent within the core. The results indicated the enormous potential of the designed vehicle to prevent AA degradation in a food product; additionally, this vehicle could mask the acidic taste of AA.
  • Food chemistry.Food Chem.2014 Jun 1;152C:271-275. doi: 10.1016/j.foodchem.2013.11.149. Epub 2013 Dec 1.
  • The importance of ascorbic acid (AA) in the human diet has motivated food researchers to develop AA-fortified food products. However, this compound is very unstable. The aim of this work was to produce solid lipid microcapsules (SLMs) loaded with AA using microfluidic technology. The morphology of t
  • PMID 24444936
  • Evaluation of thiosemicarbazone derivative as chelating agent for the simultaneous removal and trace determination of Cd(II) and Pb(II) in food and water samples.
  • Koduru JR1, Lee KD2.Author information 1Graduate School of Environmental Studies, Kwangwoon University, Seoul 139-701, Republic of Korea. Electronic address: reddyjchem@gmail.com.2Department of Nanomaterial Chemistry, Dongguk University, Gyeongju 780-714, Republic of Korea. Electronic address: kdlee@dongguk.ac.kr.AbstractIn the present investigation, prepared N-ethyl-3-carbazolecarbaxaldehyde-3-thiosemicarbazone (ECCT) and employed for the simultaneous removal and determination of trace amounts of Cd(II) and Pb(II) from food and water samples. Cd(II) and Pb(II) gave yellow and orange colored complexes with ECCT in acetate buffer at pH 6.0 with λmax, 380 and 440nm, respectively. Both complexes were easily extractable into kerosene at 1:1(M:L) composition. It was in accordance with Beer's law in the range of 0.0-12.0 and 0.0-10.0μgmL(-1) with 0.999 and 0.997 correlation coefficient for Cd(II) and Pb(II) complexes, respectively, indicated a good linearity between the two variables. The molar absorptivity and Sandell's sensitivity were found to be 0.740×10(4)Lmol(-1)cm(-1), 1.52×10(-3)μgcm(-2) for Cd(II) and 1.809×10(4)L mol(-1)cm(-1), 1.15×10(-3)μgcm(-2) for Pb(II). The precision and accuracy of the method was checked for both metal ions by finding the relative standard deviations (n=8), which were 0.689% and 0.443%, with detection limits of 0.00151μgL(-1) and 0.00264μgL(-1) for Cd(II) and Pb(II), respectively. Further validation using certified reference material, NIST 1568b, resulted in determined concentrations of 0.028±0.253μgg(-1) for Cd(II) and 0.046±0.325μgg(-1) for Pb(II). These determined values agree well with the certified values in the reference materials. The interfering effects of various cations and anions were also studied. The proposed method performance was also evaluated in terms of Student 'T' test and Variance 'F' test, which indicated the significance of the present method parameters, as an inter comparison of the experimental values using ICP-OES.
  • Food chemistry.Food Chem.2014 May 1;150:1-8. doi: 10.1016/j.foodchem.2013.10.104. Epub 2013 Nov 1.
  • In the present investigation, prepared N-ethyl-3-carbazolecarbaxaldehyde-3-thiosemicarbazone (ECCT) and employed for the simultaneous removal and determination of trace amounts of Cd(II) and Pb(II) from food and water samples. Cd(II) and Pb(II) gave yellow and orange colored complexes with ECCT in a
  • PMID 24360411
  • Nanopore detection of copper ions using a polyhistidine probe.
  • Wang G, Wang L, Han Y, Zhou S, Guan X.Author information Department of Biological and Chemical Sciences, Illinois Institute of Technology, 3101 S Dearborn St, Chicago, IL 60616, USA.AbstractWe report a stochastic nanopore sensing method for the detection of Cu(2+) ions. By employing a polyhistidine molecule as a chelating agent, and based on the different signatures of the events produced by the translocation of the chelating agent through an α-hemolysin pore in the absence and presence of target analytes, trace amounts of copper ions could be detected with a detection limit of 40 nM. Importantly, although Co(2+), Ni(2+), and Zn(2+) also interacts with the polyhistidine molecule, since the event residence times and/or blockage amplitudes for these metal chelates are significantly different from those of copper chelates, these metal ions do not interfere with Cu(2+) detection. This chelating reaction approach should find useful application in the development of nanopore sensors for other metal ions.
  • Biosensors & bioelectronics.Biosens Bioelectron.2014 Mar 15;53:453-8. doi: 10.1016/j.bios.2013.10.013. Epub 2013 Oct 23.
  • We report a stochastic nanopore sensing method for the detection of Cu(2+) ions. By employing a polyhistidine molecule as a chelating agent, and based on the different signatures of the events produced by the translocation of the chelating agent through an α-hemolysin pore in the absence and presen
  • PMID 24211457

和文文献

  • Post-treatment法による高活性水素化脱硫触媒の調製
  • Ultraphosphate, a potent stain control agent that is effective for both stain removal and prevention of stain deposition
  • KOYASU Masahiro,SHIBA Toshikazu,KAWAZOE Yumi,MANABE Atsufumi,MIYAZAKI Takashi
  • Dental Materials Journal, 2014
  • … When using HAP powder, the stain removal ability of ultraphosphate was the highest among common chelating agents. … These results indicate that ultraphosphate is a potent agent for stain control. …
  • NAID 130003394958
  • Adsorption of Cu(II), Pb(II) by Mg–Al Layered Double Hydroxides (LDHs): Intercalated with the Chelating Agents EDTA and EDDS
  • Zhang Shuang,Kano Naoki,Imaizumi Hiroshi
  • JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 47(4), 324-328, 2014
  • … The hydrotalcite-like compound [Mg2Al(OH)6]NO3·nH2O (shorted as MgAl–NO3) was intercalated with the chelating agent ethylenediaminetetraacetic acid (EDTA) and N,N′-1,2-ethanediylbis-1-aspartic acid (EDDS) by anion exchange to uptake heavy metal ions (Cu2+, Pb2+) from aqueous solutions. …
  • NAID 130003390897

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★リンクテーブル★
リンク元chelator」「キレート化剤」「キレート薬
拡張検索iron chelating agent
関連記事agent」「age」「chelating

chelator」

  [★]

chelating agentchelating reagentligand

キレート化剤」

  [★]

chelating agent
キレーターキレート薬


キレート薬」

  [★]

chelating agent
キレート化剤


iron chelating agent」

  [★]

iron chelate


agent」

  [★]

  • n.
  • 代行者、代理人。代理業者
  • 政府職員、官吏
  • ある後位をする人、ある作用をするもの。動員、動力因、作用因。(文法)動作主。科学的変化を起こさせるもの、薬品、~剤。病原体
agonistagonisticattorneydelegatedrugetiologic agentfomesfomitesmediatorpathogenpathogenicpharmaceutical preparationvectorvehicle

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「a substance that exerts some force or effect」

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「a businessman who buys or sells for another in exchange for a commission」
factor, broker

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「any agent or representative of a federal agency or bureau」
federal agent

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「a representative who acts on behalf of other persons or organizations」

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「an active and efficient cause; capable of producing a certain effect; "their research uncovered new disease agents"」

PrepTutorEJDIC   license prepejdic

「『代理人』;周旋人 / 働き(作用)を起こすもの;作用物,薬剤 / (政府機関,特にFBI,CIAなどの)部員,機関員」


age」

  [★]

  • n.
  • v.
  • 加齢する、熟成する
agedageingagingyear old

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「how long something has existed; "it was replaced because of its age"」

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「a time of life (usually defined in years) at which some particular qualification or power arises; "she was now of school age"; "tall for his eld"」
eld

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「begin to seem older; get older; "The death of his wife caused him to age fast"」

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「make older; "The death of his child aged him tremendously"」

PrepTutorEJDIC   license prepejdic

「〈U〉(一般に)『年齢』,寿命;〈C〉(個々の)『年齢』,年 / 〈U〉成年(おとなとしての資格・権利を得る年齢;通例18または21歳) / 〈U〉『老齢』;《集合的に》老人たち / 〈U〉(人生の)『一時期』;〈C〉世代(generation) / 〈U〉〈C〉《しばしばA-》(歴史上の)『時代』 / 〈C〉《話》長い間 / 年をとる,ふける;〈物が〉古くなる / 〈年〉'を'とらせる;〈物〉'を'古びさせる」

chelating」

  [★]

chelatechelation




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