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000061658 084__ $$2WoS$$aChemistry, Analytical
000061658 1001_ $$0P:(DE-Juel1)VDB71401$$aFitri, N.$$b0$$uFZJ
000061658 245__ $$aMolybdenum speciation in raw phloem sap of castor bean
000061658 260__ $$aNew York, NY$$bTaylor & Francis$$c2008
000061658 300__ $$a1773 - 1784
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000061658 520__ $$aSeparation and quantification of molybdenum (Mo) in raw phloem sap from castor bean (Ricinus communis L.) was performed by size exclusion chromatography (SEC) and further purification was performed using quantitative preparative native continuous polyacrylamide gel electrophoresis (QPNC-PAGE). For elemental detection, an inductively coupled plasma quadrupole mass spectrometer (ICP-QMS) was applied. Two different SEC columns were utilized: column A, Sephadex G-50 SF (700mm24mm), and column B, Sephadex G-25 M (28mm9mm). The protein content of the fractions was determined by the Bradford method. Using column A, two peaks of Mo were detected consisting of a main peak (MoA2) in the low molecular weight area (1.35 kDa), and a minor peak (MoA1,30 kDa) at the void volume of the column. Both Mo species were detected at the ultraviolet (UV) active absorption area of raw phloem sap. Two peaks of Mo were also detected using column B, the first peak (MoB1) being at the same elution volume as the protein of raw phloem sap, and the second one (MoB2) was eluted in the area of 1.5 to 2.4mL of elution volume. Raw phloem sap digested by proteinase K-enzyme indicates a significant reduction of MoB1 peak, which suggests that the peak may contain Mo bound to protein or polypeptides. The raw phloem sap and SEC fraction containing highest Mo concentration (MoA2) were furthermore separated by QPNC-PAGE. The result reveals that the Mo-containing fraction from the raw phloem sap was eluted at the same retention volume as the purified sample. This implies that the Mo species were also successfully separated and purified using QPNC-PAGE.
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000061658 65320 $$2Author$$acastor bean
000061658 65320 $$2Author$$aMo speciation
000061658 65320 $$2Author$$aphloem sap
000061658 65320 $$2Author$$aQPNC-PAGE
000061658 65320 $$2Author$$aSEC
000061658 7001_ $$0P:(DE-Juel1)129343$$aKastenholz, B.$$b1$$uFZJ
000061658 7001_ $$0P:(DE-HGF)0$$aBuchari, B.$$b2
000061658 7001_ $$0P:(DE-HGF)0$$aAmran, M. B.$$b3
000061658 7001_ $$0P:(DE-HGF)0$$aWarganegara, F. M.$$b4
000061658 773__ $$0PERI:(DE-600)2098207-0$$a10.1080/00032710802162442$$gVol. 41, p. 1773 - 1784$$p1773 - 1784$$q41<1773 - 1784$$tAnalytical letters$$v41$$x0003-2719$$y2008
000061658 8567_ $$uhttp://dx.doi.org/10.1080/00032710802162442
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