A novel support for laccase immobilization: Cellulose acetate modified with ionic liquid and application in biosensor for methyldopa detection

Moccelini, Sally Katiuce; Franzoi, Ana Cristina; Vieira, Iolanda Cruz; Dupont, Jaı̈rton; Scheeren, Carla Weber

doi:10.1016/j.bios.2011.01.043

Cited by 85 publications

(41 citation statements)

References 34 publications

(36 reference statements)

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“…This was exploited for the detection of adrenaline [119], methyldopa [120], and morphine [121] in pharmaceuticals by monitoring the electroreduction of the product, or the oxygen consumption, the enzyme being co-immobilized with PQQ-glucose dehydrogenase [121].…”

Section: Enzyme-based Biosensors For Inhibition Studiesmentioning

confidence: 99%

Electrochemical Biosensors for Drug Analysis

Özkan

Kauffmann

Zuman

2015

Monographs in Electrochemistry

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Section: Enzyme-based Biosensors For Inhibition Studiesmentioning

confidence: 99%

Electrochemical Biosensors for Drug Analysis

Özkan

Kauffmann

Zuman

2015

Monographs in Electrochemistry

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“…To examine the selectivity of the method, the interference from foreign species to the determination of 1.0 Â 10 À6 g/mL LPA were investigated using the molecularly imprinted particles combined with the electrochemiluminescence (MIP-ECL) method and ECL method, respectively. A species was not considered to interfere if it caused a relative error of less than 75% [23][24][25]. The tolerable concentration ratios were determined as shown in Table 1.…”

Section: Interference Reproducibility and Stability Of This Fia-ecl mentioning

confidence: 99%

Detection of L‐phenylalanine using molecularly imprinted solid‐phase extraction and flow injection electrochemiluminescence

Wan

et al. 2011

J of Separation Science

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A novel flow injection electrochemiluminescence method combined with molecularly imprinted solid-phase extraction was developed for the determination of L-phenylalanine, in which ${\rm{Ru(bpy}})_3^{2 + }$ was used as the luminophor and indium tin oxide glass was modified as the working electrode. Molecularly imprinted polymers, synthesized by self-assembly with functional monomer and crossing linker, were used for the selective extraction of L-phenylalanine. In order to overcome the drawbacks of traditional electrochemiluminescence cells such as high IR drop, high over-potential and so on, a novel electrochemiluminescence cell was developed. The enhanced electrochemiluminescence intensity was linearly related with the concentration of L-phenylalanine in the range from 1.0×10(-7) to 5.0×10(-5) g/mL with a detection limit of 2.59×10(-8) g/mL. The relative standard deviation for the determination of 1.0×10(-6) g/mL L-phenylalanine was 1.2% (n=11). The method showed higher sensitivity and good repeatability, and was successfully applied for the determination of L-phenylalanine in egg white, chicken and serum samples. A possible mechanism for the enhanced electrochemiluminescence response on indium tin oxide glass is proposed.

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“…They display many fascinating characteristics such as high thermal and chemical stability, negligible vapor pressure, nonvolatility, strong polarity, and good solvating properties [2]. Over the past few years, ILs have aroused increasing interest for their promising role as organic reaction solvents [3], separation-extraction solvents [4], and electrolyte materials [5]. In addition, ILs have been introduced as an important component to form task-specific polymers, which will be capable of interacting with analytes or substrates in specific ways.…”

Section: Introductionmentioning

confidence: 99%

Polymethacrylate microparticles covalently functionalized with an ionic liquid for solid-phase extraction of fluoroquinolone antibiotics

et al. 2015

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Microparticles were synthesized by suspension copolymerization of the synthetic ionic liquid (IL) 1-allyl-3-methylimidazolium bromide with ethylene glycol dimethacrylate. The particles have a regular spherical shape and an average diameter of 65±24 μm. Their affinity for the fluoroquinolone antibiotics ofloxacin (OFL), lomefloxacin (LOM) and ciprofloxacin (CIP) is much higher than that of the blank polymer (not containing an IL), of polymers using methacrylic acid as functional monomer, of hydrophilic-lipophilic balanced sorbents, and of C 18 sorbents. The microparticles were applied to the solid-phase extraction and rapid preconcentration of the fluoroquinolones from urine which then were quantified by HPLC. The calibration plot covers the 0.05 to 20 μg mL −1 concentration range, and the average recoveries at three spiking levels range from 93.6 to 103.7 %, with RSD of ≤5.7 %. The method was successfully applied to the determination of fluoroquinolones in spiked urine.

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A novel support for laccase immobilization: Cellulose acetate modified with ionic liquid and application in biosensor for methyldopa detection

Cited by 85 publications

References 34 publications

Electrochemical Biosensors for Drug Analysis

Electrochemical Biosensors for Drug Analysis

Detection of L‐phenylalanine using molecularly imprinted solid‐phase extraction and flow injection electrochemiluminescence

Polymethacrylate microparticles covalently functionalized with an ionic liquid for solid-phase extraction of fluoroquinolone antibiotics

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