Molecularly imprinted microspheres and nanoparticles prepared using precipitation polymerisation method for selective extraction of gallic acid from Emblica officinalis

Pardeshi, Sushma; Dhodapkar, Rita; Kumar, Anupama

doi:10.1016/j.foodchem.2013.09.084

Cited by 92 publications

(47 citation statements)

References 26 publications

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“…The uniformity of the beads obtained was due to the influence of toluene in the acetonitrile-toluene mixture (Pardeshi et al, 2014). SEM results also show the difference of diameter between Py-IP and NIP, due to the presence of the template that can affect the formation of the imprinted polymer (Farrington et al, 2006).…”

Section: Discussionmentioning

confidence: 82%

Isotherm Studies of Pyrogallol-imprinted Polymers via Precipitation Polymerization

Othman

Yusof

Daik³

et al. 2017

IJTech

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Molecularly imprinted polymers (MIPs) have been the most convenient and selected methods in detection and extraction for many types of specific targets in various fields. MIPs were prepared by mixing template molecule with functional monomer in the presence of cross-linker, solvent and initiator. The selectivity of MIPs is strongly influenced by the types of functional monomer, solvent and polymerization process used. Pyrogallol-imprinted polymer (Py-IP) and nonimprinted polymer (NIP) were synthesized via precipitation polymerization using 4-vinylpyridine (4-VP), divinylbenzene (DVB) and azobisisobutyronitrile (AIBN) as functional monomer, cross-linker and initiator, respectively. Pyrogallol (Py) was used as a target molecule. The synthesized polymers were characterized by Fourier Transform Infrared Spectroscopy (FTIR), Scanning Electron Microscopy (SEM), and UV-Visible Spectroscopy (UV-Vis). In this study, adsorption capacity was measured by the dosage effect, contact time and selectivity study. Results showed that maximum adsorption capacity by Py-IP is above 50%. The Selectivity study shows that k' is >1, which indicates that Py-IP has a good selectivity towards pyrogallol. Therefore, it has a good potential to be used as an adsorbent.

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Section: Discussionmentioning

confidence: 82%

Isotherm Studies of Pyrogallol-imprinted Polymers via Precipitation Polymerization

Othman

Yusof

Daik³

et al. 2017

IJTech

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“…Therefore researchers began to work on obtaining spherical-shaped polymers. Spherical particles can be created using precipitation polymerization [10,11]. Another method of preparing spherical particles is the build-up of a polymer on the solid core, so called "core-shell" polymerization [12].…”

Section: Methodology Of Preparation Of Porous Molecularly Imprinted Pmentioning

confidence: 99%

Magnetic molecular imprinted polymers as a tool for isolation and purification of biological samples

2015

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Technology of molecularly imprinted polymers (MIP) has become very popular in recent decades. MIPs are primarily used in medical diagnostics, chromatographic separation and solid phase extraction (SPE); also as sensors and catalysts. In recent years there have been reported benefits of combining molecular imprinted polymers with additional features, e.g. magnetic properties, through the build-up of this type of material on magnetite particles (Magnetic Molecularly Imprinted Polymer -MMIP). This method produces a multifunctional material which has high selectivity and the ability to isolate the analyte from biological and environmental samples, allowing effective purification from such interferents as proteins and fats. This developing branch of new materials for the preparation and purification of complex sample matrices is an interesting alternative to materials routinely used to date, particularly with regard to the immunosorbents. This paper summarizes recent reports regarding MMIP preparation and their application for purification and isolation of compounds from biological matrices.

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“…[10] The important bands observed in the FT-IR spectra of MIP R (before and after removal of GA) and NIP R are presented in Figure 2(c). A broad band is observed at 3539 cm ¡1 and 3557 cm ¡1 due to ÀOH stretching in MIP R before and after the removal of GA, respectively.…”

Section: Ft-ir Spectroscopy Analysismentioning

confidence: 99%

Effect of some polymerization methods on the imprinting performance of molecularly imprinted polymers for molecularly imprinted solid-phase extraction application

Pardeshi

Dhodapkar

Kumar

2014

Journal of the Chinese Advanced Materials Society

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The present work describes a solid-phase extraction (SPE) procedure using the molecularly imprinted polymers (MIPs) in order to obtain a cleaner extract and high recovery from a highly complex and aqueous herbal matrix. MIPs with a similar composition of precursors were synthesized by bulk (MIP B ), precipitation (MIP P ) and reverse microemulsion polymerization (MIP R ) methods, and the resulting MIPs were characterized by scanning electron microscopy and Fourier transform infrared spectroscopy. The MIPs were used as sorbent in SPE procedure to study their imprinting performance in the aqueous conditions. The molecularly imprinted solid-phase extraction (MISPE) procedure for selective extraction of gallic acid (GA) from the herbal extract was performed. MIP R have shown the superior performance with the 86% extraction of GA. It was observed that the morphology of the MIPs can be enhanced using various polymerization methods for improved SPE application.

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Molecularly imprinted microspheres and nanoparticles prepared using precipitation polymerisation method for selective extraction of gallic acid from Emblica officinalis

Cited by 92 publications

References 26 publications

Isotherm Studies of Pyrogallol-imprinted Polymers via Precipitation Polymerization

Isotherm Studies of Pyrogallol-imprinted Polymers via Precipitation Polymerization

Magnetic molecular imprinted polymers as a tool for isolation and purification of biological samples

Effect of some polymerization methods on the imprinting performance of molecularly imprinted polymers for molecularly imprinted solid-phase extraction application

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