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Smartphone‐based colorimetric chiral recognition of ibuprofen using aptamers‐capped gold nanoparticles

Published: Dec 15, 2017

Author(s): Jing Ping, Zhenjiang He, Jianshe Liu, Xuehui Xie

Journal: ELECTROPHORESIS

Abstract Sensitive and fast detection of ibuprofen enantiomers is very critical for required routine monitoring and risk assessment of trace pollutants in water samples. Here a simple, rapid and highly sensitive android smartphone application for chiral recognition was developed. Aptamer‐capped gold nanoparticles (AuNPs) was demonstrated as an efficient detection platform for (S)‐(+)‐ibuprofen (S‐Ibu) and (R)‐(‐)‐ibuprofen (R‐Ibu)....

Read More thumbnail image: Smartphonebased colorimetric chiral recognition of ibuprofen using aptamerscapped gold nanoparticles

Smartphone‐based colorimetric chiral recognition of ibuprofen using aptamers‐capped gold nanoparticles

Published: Dec 15, 2017

Author(s): Jing Ping, Zhenjiang He, Jianshe Liu, Xuehui Xie

Journal: ELECTROPHORESIS

Abstract Sensitive and fast detection of ibuprofen enantiomers is very critical for required routine monitoring and risk assessment of trace pollutants in water samples. Here a simple, rapid and highly sensitive android smartphone application for chiral recognition was developed. Aptamer‐capped gold nanoparticles (AuNPs) was demonstrated as an efficient detection platform for (S)‐(+)‐ibuprofen (S‐Ibu) and (R)‐(‐)‐ibuprofen (R‐Ibu)....

Read More thumbnail image: Smartphonebased colorimetric chiral recognition of ibuprofen using aptamerscapped gold nanoparticles

On‐site Raman study of artwork: Procedure and illustrative examples

Published: Dec 15, 2017

Author(s): Philippe Colomban

Journal: Journal of Raman Spectroscopy

Abstract Raman microspectroscopy conducted with transportable/mobile instruments allows for the non‐invasive identification of amorphous and crystalline phases of ancient masterpieces and outstanding artworks (objects, paintings and décor, building parts, etc.). Resonance Raman spectroscopy detects chromophore and dye traces. On the basis of examples (enamelled glass and pottery, enamelled metal, patinated/corroded metal, stained...

Read More thumbnail image: Onsite Raman study of artwork Procedure and illustrative examples

On‐site Raman study of artwork: Procedure and illustrative examples

Published: Dec 15, 2017

Author(s): Philippe Colomban

Journal: Journal of Raman Spectroscopy

Abstract Raman microspectroscopy conducted with transportable/mobile instruments allows for the non‐invasive identification of amorphous and crystalline phases of ancient masterpieces and outstanding artworks (objects, paintings and décor, building parts, etc.). Resonance Raman spectroscopy detects chromophore and dye traces. On the basis of examples (enamelled glass and pottery, enamelled metal, patinated/corroded metal, stained...

Read More thumbnail image: Onsite Raman study of artwork Procedure and illustrative examples

Review: Electric field driven pumping in microfluidic device

Published: Dec 15, 2017

Author(s): Mohammad R. Hossan, Diganta Dutta, Nazmul Islam, Prashanta Dutta

Journal: ELECTROPHORESIS

Abstract Pumping of fluids with precise control is one of the key components in a microfluidic device. The electric field has been used as one of the most popular and efficient nonmechanical pumping mechanism to transport fluids in microchannels from the very early stage of microfluidic technology development. This review presents fundamental physics and theories of the different microscale phenomena that arise due to the...

Read More thumbnail image: Review Electric field driven pumping in microfluidic device

Review: Electric field driven pumping in microfluidic device

Published: Dec 15, 2017

Author(s): Mohammad R. Hossan, Diganta Dutta, Nazmul Islam, Prashanta Dutta

Journal: ELECTROPHORESIS

Abstract Pumping of fluids with precise control is one of the key components in a microfluidic device. The electric field has been used as one of the most popular and efficient nonmechanical pumping mechanism to transport fluids in microchannels from the very early stage of microfluidic technology development. This review presents fundamental physics and theories of the different microscale phenomena that arise due to the...

Read More thumbnail image: Review Electric field driven pumping in microfluidic device

Statistical optimization of an RP‐HPLC method for the determination of selected flavonoids in berry juices and evaluation of their antioxidant activities

Published: Dec 15, 2017

Author(s): Andrija Ciric, Milena Jelikic‐Stankov, Milica Cvijovic, Predrag Djurdjevic

Journal: Biomedical Chromatography

Abstract An isocratic RP‐HPLC method for the separation and identification of selected flavonoids (quercetin, rutin, luteolin‐7‐O‐glucoside, kaempferol and kaempferol‐3‐O‐glucoside) in commercial berry juices (blackcurrant, blueberry, red raspberry and cherry) was developed with the aid of central composite design and response surface methodology. The optimal separation conditions were a mobile phase of 85:15 (% v/v) water–acetonitrile, pH 2.8...

Read More thumbnail image: Statistical optimization of an RPHPLC method for the determination of selected flavonoids in berry juices and evaluation of their antioxidant activities

Statistical optimization of an RP‐HPLC method for the determination of selected flavonoids in berry juices and evaluation of their antioxidant activities

Published: Dec 15, 2017

Author(s): Andrija Ciric, Milena Jelikic‐Stankov, Milica Cvijovic, Predrag Djurdjevic

Journal: Biomedical Chromatography

Abstract An isocratic RP‐HPLC method for the separation and identification of selected flavonoids (quercetin, rutin, luteolin‐7‐O‐glucoside, kaempferol and kaempferol‐3‐O‐glucoside) in commercial berry juices (blackcurrant, blueberry, red raspberry and cherry) was developed with the aid of central composite design and response surface methodology. The optimal separation conditions were a mobile phase of 85:15 (% v/v) water–acetonitrile, pH 2.8...

Read More thumbnail image: Statistical optimization of an RPHPLC method for the determination of selected flavonoids in berry juices and evaluation of their antioxidant activities

Multiplex identification of sepsis‐causing Gram‐negative pathogens from the plasma of infected blood

Published: Dec 14, 2017

Author(s): Boram Chung, Chulmin Park, Sung‐Yeon Cho, Juyoun Shin, Sun Shin, Seon‐Hee Yim, Dong‐Gun Lee, Yeun‐Jung Chung

Journal: ELECTROPHORESIS

Abstract Early and accurate detection of bacterial pathogens in the blood is the most crucial step for sepsis management. Gram‐negative bacteria are the most common organisms causing severe sepsis and responsible for high morbidity and mortality. We aimed to develop a method for rapid multiplex identification of clinically important Gram‐negative pathogens and also validated whether our system can identify Gram‐negative pathogens...

Read More thumbnail image: Multiplex identification of sepsiscausing Gramnegative pathogens from the plasma of infected blood

Multiplex identification of sepsis‐causing Gram‐negative pathogens from the plasma of infected blood

Published: Dec 14, 2017

Author(s): Boram Chung, Chulmin Park, Sung‐Yeon Cho, Juyoun Shin, Sun Shin, Seon‐Hee Yim, Dong‐Gun Lee, Yeun‐Jung Chung

Journal: ELECTROPHORESIS

Abstract Early and accurate detection of bacterial pathogens in the blood is the most crucial step for sepsis management. Gram‐negative bacteria are the most common organisms causing severe sepsis and responsible for high morbidity and mortality. We aimed to develop a method for rapid multiplex identification of clinically important Gram‐negative pathogens and also validated whether our system can identify Gram‐negative pathogens...

Read More thumbnail image: Multiplex identification of sepsiscausing Gramnegative pathogens from the plasma of infected blood

Organellar Omics—A Reviving Strategy to Untangle the Biomolecular Complexity of the Cell

Published: Dec 14, 2017

Author(s): Arun Kumar Tharkeshwar, Kris Gevaert, Wim Annaert

Journal: PROTEOMICS

Abstract A eukaryotic cell encompasses many membrane‐enclosed organelles, each of these holding several types of biomolecules that exhibit tremendous diversity in terms of their localization and expression. Despite the development of increasingly sensitive analytical tools, the enormous biomolecular complexity that exists within a cell cannot yet be fully resolved as low abundant molecules often remain unrecognized. Moreover, a...

Read More thumbnail image: Organellar OmicsA Reviving Strategy to Untangle the Biomolecular Complexity of the Cell

Organellar Omics—A Reviving Strategy to Untangle the Biomolecular Complexity of the Cell

Published: Dec 14, 2017

Author(s): Arun Kumar Tharkeshwar, Kris Gevaert, Wim Annaert

Journal: PROTEOMICS

Abstract A eukaryotic cell encompasses many membrane‐enclosed organelles, each of these holding several types of biomolecules that exhibit tremendous diversity in terms of their localization and expression. Despite the development of increasingly sensitive analytical tools, the enormous biomolecular complexity that exists within a cell cannot yet be fully resolved as low abundant molecules often remain unrecognized. Moreover, a...

Read More thumbnail image: Organellar OmicsA Reviving Strategy to Untangle the Biomolecular Complexity of the Cell

Simultaneous determination of isomeric substituted anilines by imidization with benzaldehyde and gas chromatography–mass spectrometry

Published: Dec 14, 2017

Author(s): Mengmeng Chen, Guohua Zhu, Shanshan Wang, Kezhi Jiang, Jiaxiang Xu, Jinsong Liu, Jianxiong Jiang

Journal: Journal of Separation Science

Abstract The chromatographic separation of several isomeric anilines is a challenging issue. Herein, a simple method for the simultaneous determination of four groups of isomeric primary aromatic amines, including chloroanilines, methylanilines, methoxylanilines, and dimethylanilines, was presented. In this method, all of the 15 primary aromatic amines were easily transformed into the corresponding imine derivative by treatment with...

Read More thumbnail image: Simultaneous determination of isomeric substituted anilines by imidization with benzaldehyde and gas chromatographymass spectrometry

Simultaneous determination of isomeric substituted anilines by imidization with benzaldehyde and gas chromatography–mass spectrometry

Published: Dec 14, 2017

Author(s): Mengmeng Chen, Guohua Zhu, Shanshan Wang, Kezhi Jiang, Jiaxiang Xu, Jinsong Liu, Jianxiong Jiang

Journal: Journal of Separation Science

Abstract The chromatographic separation of several isomeric anilines is a challenging issue. Herein, a simple method for the simultaneous determination of four groups of isomeric primary aromatic amines, including chloroanilines, methylanilines, methoxylanilines, and dimethylanilines, was presented. In this method, all of the 15 primary aromatic amines were easily transformed into the corresponding imine derivative by treatment with...

Read More thumbnail image: Simultaneous determination of isomeric substituted anilines by imidization with benzaldehyde and gas chromatographymass spectrometry

Synthesis of thermo‐responsive bovine hemoglobin imprinted nanoparticles by combining ionic liquid immobilization with aqueous precipitation polymerization

Published: Dec 14, 2017

Author(s): Yongmei Wang, Chongchong Yang, Yan Sun, Fengtao Qiu, Yang Xiang, Guoqi Fu

Journal: Journal of Separation Science

Abstract Surface molecular imprinting over functionalized nanoparticles has proved to be an effective approach for construction of artificial nanomaterials for protein recognition. Herein, we report a strategy for synthesis of core–shell protein‐imprinted nanoparticles by the functionalization of nano‐cores with ionic liquids followed by aqueous precipitation polymerization to build thermo‐responsive imprinted polymer nano‐shells....

Read More thumbnail image: Synthesis of thermoresponsive bovine hemoglobin imprinted nanoparticles by combining ionic liquid immobilization with aqueous precipitation polymerization

Synthesis of thermo‐responsive bovine hemoglobin imprinted nanoparticles by combining ionic liquid immobilization with aqueous precipitation polymerization

Published: Dec 14, 2017

Author(s): Yongmei Wang, Chongchong Yang, Yan Sun, Fengtao Qiu, Yang Xiang, Guoqi Fu

Journal: Journal of Separation Science

Abstract Surface molecular imprinting over functionalized nanoparticles has proved to be an effective approach for construction of artificial nanomaterials for protein recognition. Herein, we report a strategy for synthesis of core–shell protein‐imprinted nanoparticles by the functionalization of nano‐cores with ionic liquids followed by aqueous precipitation polymerization to build thermo‐responsive imprinted polymer nano‐shells....

Read More thumbnail image: Synthesis of thermoresponsive bovine hemoglobin imprinted nanoparticles by combining ionic liquid immobilization with aqueous precipitation polymerization

Identification of proteins, drying oils, waxes and resins in the works of art micro‐samples by chromatographic and mass spectrometric techniques

Published: Dec 14, 2017

Author(s): Bartłomiej Witkowski, Anna Duchnowicz, Monika Ganeczko, Agnieszka Laudy, Tomasz Gierczak, Magdalena Biesaga

Journal: Journal of Separation Science

Abstract Simplified method for simultaneous identification of proteins, drying oils, waxes, and resins in the works‐of‐art samples was developed. Liquid chromatography with mass spectrometry and gas chromatography with mass spectrometry were used to identify natural materials most frequently encountered in historical paintings. Protein binders were extracted with ammonia and purified using miniaturized solid‐phase microextraction...

Read More thumbnail image: Identification of proteins drying oils waxes and resins in the works of art microsamples by chromatographic and mass spectrometric techniques

Identification of proteins, drying oils, waxes and resins in the works of art micro‐samples by chromatographic and mass spectrometric techniques

Published: Dec 14, 2017

Author(s): Bartłomiej Witkowski, Anna Duchnowicz, Monika Ganeczko, Agnieszka Laudy, Tomasz Gierczak, Magdalena Biesaga

Journal: Journal of Separation Science

Abstract Simplified method for simultaneous identification of proteins, drying oils, waxes, and resins in the works‐of‐art samples was developed. Liquid chromatography with mass spectrometry and gas chromatography with mass spectrometry were used to identify natural materials most frequently encountered in historical paintings. Protein binders were extracted with ammonia and purified using miniaturized solid‐phase microextraction...

Read More thumbnail image: Identification of proteins drying oils waxes and resins in the works of art microsamples by chromatographic and mass spectrometric techniques

Development of a high‐throughput method based on thin‐film microextraction using a 96‐well plate system with a cork coating for the extraction of emerging contaminants in river water samples

Published: Dec 14, 2017

Author(s): Lucas Morés, Adriana Neves Dias, Eduardo Carasek

Journal: Journal of Separation Science

Abstract In this study, a new method was developed in which a biosorbent material is used as the extractor phase in conjunction with a recently described sample preparation technique called thin‐film microextraction and a 96‐well plate system. The method was applied for the determination of emerging contaminants, such as 3‐(4‐methylbenzylidene) camphor, ethylparaben, triclocarban, and bisphenol A in water samples. The separation and...

Read More thumbnail image: Development of a highthroughput method based on thinfilm microextraction using a 96well plate system with a cork coating for the extraction of emerging contaminants in river water samples

Development of a high‐throughput method based on thin‐film microextraction using a 96‐well plate system with a cork coating for the extraction of emerging contaminants in river water samples

Published: Dec 14, 2017

Author(s): Lucas Morés, Adriana Neves Dias, Eduardo Carasek

Journal: Journal of Separation Science

Abstract In this study, a new method was developed in which a biosorbent material is used as the extractor phase in conjunction with a recently described sample preparation technique called thin‐film microextraction and a 96‐well plate system. The method was applied for the determination of emerging contaminants, such as 3‐(4‐methylbenzylidene) camphor, ethylparaben, triclocarban, and bisphenol A in water samples. The separation and...

Read More thumbnail image: Development of a highthroughput method based on thinfilm microextraction using a 96well plate system with a cork coating for the extraction of emerging contaminants in river water samples
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