scholarly journals Separation of matrine and oxymatrine from Sophora flavescens extract through cation exchange resin coupled with macroporous absorption resin

2016 ◽  
Vol 18 (2) ◽  
pp. 31-39 ◽  
Author(s):  
Haohao Chen ◽  
Shaojian Luo ◽  
Xikang Zheng ◽  
Huajun Fan
Keyword(s):  
Cation Exchange ◽  
Crude Extract ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Freundlich Isotherm ◽  
Sophora Flavescens ◽  
Macroporous Resin ◽  
Foreign Matter ◽  
Simple Method ◽  
Adsorption Data

Abstract A simple method for separation of matrine and oxymatrine from Sophora flavescens was developed with cation exchange resin coupled with macroporous resin. Based on the adsorption characteristics of matrine and oxymatrine, 001×732 cation exchange resin was used to absorb target alkaloids for removing most of the foreign matter, while BS-65 macroporous resin was chosen to purify these alkaloids. The result showed that the equilibrium adsorption data of matrine and oxymatrine on 001×732 resin and BS-65 resin at 30°C was fitted to Langmuir isotherm and Freundlich isotherm, respectively. The contents of matrine and oxymatrine were increased from 0.73% and 2.2% in the crude extract of the root of Sophora flavescens to 67.2% and 66.8% in the final eluent products with the recoveries of 90.3% and 86.9%, respectively.

scholarly journals Determination ofMagnesium Stearate in Capsule- or Tablet-Type Supplements

2006 ◽  
Vol 89 (2) ◽  
pp. 458-461 ◽  
Author(s):  
Yoko Uematsu ◽  
Mami Ogimoto ◽  
Junichirou Kabashima ◽  
Kouichi Ito ◽  
Kazuo Yasuda
Keyword(s):  
Gas Chromatography ◽  
Stearic Acid ◽  
Cation Exchange ◽  
Acid Concentration ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Magnesium Stearate ◽  
Positive Error ◽  
Simple Method

Abstract A simple method for the determination of magnesium stearate in capsule- or tablet-type supplements was developed. Free stearic acid in the sample was removed by extraction with tetrahydrofuran. The remaining stearate was converted to stearic acid by reaction with a cation-exchange resin. The resulting stearic acid was determined by gas chromatography with a polar column. Esters of stearic acid were not converted to stearic acid and would not cause a positive error in the amount of stearate. The amount of magnesium stearate was calculated based on the stearic acid concentration thus obtained. Magnesium stearate levels in 5 out of 25 supplements exceeded 2500 g/g, which indicated the possible admixture of magnesium stearate.

scholarly journals A Safe and Simple Method of Blood Collection for Transfusion Utilizing a Cation Exchange Resin

1958 ◽  
Vol 147 (1) ◽  
pp. 69-74 ◽  
Author(s):  
Hillary A. Chollet ◽  
Roy H. Clauss ◽  
Salvatore G. Giannini ◽  
William F. MacFee
Keyword(s):  
Cation Exchange ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Blood Collection ◽  
Simple Method

scholarly journals Synthesis of a magnetic polystyrene-based cation-exchange resin and its utilization for the efficient removal of cadmium (II)

2018 ◽  
Vol 2017 (3) ◽  
pp. 770-781 ◽  
Author(s):  
Zhaohe Wang ◽  
Shilei Ding ◽  
Zhixia Li ◽  
Fuwei Li ◽  
Tingting Zhao ◽  
...  
Keyword(s):  
Cation Exchange ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Freundlich Isotherm ◽  
Maximum Adsorption Capacity ◽  
Order Kinetic ◽  
Initial Concentration ◽  
Adsorption Processes ◽  
Order Kinetic Model ◽  
Styrene Divinylbenzene

Abstract A magnetic cation-exchange resin (MCER) was prepared by copolymerization of oleic acid-grafted magnetite with styrene, divinylbenzene (DVB), and triallylisocyanurate (TAIC) for removing Cd(II) from wastewater. A non-magnetic cation-exchange polystyrene resin (CEPR) was also prepared as a reference. Structural and morphological analyses revealed that the MCER and CEPR were mesoporous microspheres; the MCER contained about 25% Fe3O4. The influence of temperature, pH, contact time, and the initial concentration of Cd(II) on the adsorption of Cd(II) was investigated. The maximum adsorption capacity of the MCER reached 88.56 mg/g, which was achieved at 343 K using a Cd(II) initial concentration of 200 mg/L. The adsorption processes attained equilibrium within 120 min for the MCER and 300 min for the CEPR, and were well described by a pseudo-second-order kinetic model. Furthermore, the equilibrium adsorption data fitted the Freundlich isotherm model better than the Langmuir model. The superior magnetic response and regeneration of the MCER make it a good candidate as an adsorbent for removing Cd(II) from wastewater.

A novel procedure for separating iron from geological materials for isotopic analysis using MC-ICP-MS

2020 ◽  
Vol 35 (5) ◽  
pp. 873-877
Author(s):  
Guanhong Zhu ◽  
Jinlong Ma ◽  
Gangjian Wei ◽  
Yajun An
Keyword(s):  
Cation Exchange ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Isotopic Analysis ◽  
Simple Method ◽  
Geological Materials ◽  
Icp Ms ◽  
Single Column

A simple method was developed for achieving Fe separation and involved the use of a single column packed with AGMP-50 cation-exchange resin.

Synthesis of 3,4-Dihydropyrano[c]chromenes Using Carbon Microsphere Supported Copper Nanoparticles (Cu-NP/C) Prepared from Loaded Cation Exchange Resin as a Catalyst

2019 ◽  
Vol 16 (2) ◽  
pp. 288-293
Author(s):  
Yogesh W. More ◽  
Sunil U. Tekale ◽  
Nitishkumar S. Kaminwar ◽  
László Kótai ◽  
Tibor Pasinszki ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Cation Exchange ◽  
Copper Nanoparticles ◽  
Exchange Resin ◽  
Cation Exchange Resin ◽  
Environmentally Benign ◽  
High Yield ◽  
Carbon Microsphere ◽  
Catalytic Material ◽  
Operational Simplicity

Aim and Objective: The present study was performed with the aim to develop an efficient and environmentally benign protocol for the synthesis of biologically siginifcant 3, 4-dihydropyrano[c]chromenes using a new catalytic material. The protocol involves the use of a reusable, environment friendly materials and solvents with operational simplicity. Materials and Methods: Carbon microsphere supported copper nanoparticles (Cu-NP/C) prepared from loaded cation exchange resin were synthesized, characterized with well versed analytical techniques such as XRD, SEM and Raman spectroscopy and the synthesized material was used as a catalyst for the environmentally benign synthesis of 3,4-dihydropyrano[c]chromenes. Results: The formation of carbon microsphere supported copper nanoparticles (Cu-NP/C) prepared from loaded cation exchange resin was confirmed by XRD, SEM and Raman spectroscopy which was employed as a heterogeneous material for the synthesis of 3,4-dihydropyrano[c]chromenes. The products formed were characterized by the analysis of spectroscopic data - NMR, IR and mass. The safe catalytic system offers several advantages including operational simplicity, environmental friendliness, high yield, and reusability of catalyst and green chemical transformation. Conclusion: Herein we report an easy and efficient protocol for the one-pot synthesis of dihydropyrano[ c]chromenes using environmentally benign MCR approach in ethanol as the green solvent. The method developed herein constitutes a valuable addition to the existing methods for the synthesis of titled compounds.

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