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Anna Miodek et al.
Sensors (Basel, Switzerland), 15(10), 25015-25032 (2015-10-02)
An aptasensor with enhanced anti-fouling properties has been developed. As a case study, the aptasensor was designed with specificity for human thrombin. The sensing platform was developed on screen printed electrodes and is composed of a self-assembled monolayer made from
Peter S Toth et al.
The Analyst, 140(6), 1947-1954 (2015-02-11)
Two-phase voltammetry has been carried out using a reverse cell configuration, i.e. with the lower density organic solvent on the top of the aqueous solution in the cell, where the organic solvents contain either nitrile or ketone functional groups. The
Yoshiharu Matsumae et al.
Analytica chimica acta, 842, 20-26 (2014-08-17)
We evaluated the intracellular quinone oxidoreductase (NQO) activity of single HeLa cells by using the menadione-ferrocyanide double-mediator system combined with scanning electrochemical microscopy (SECM). The double-mediator system was used to amplify the current response from the intracellular NQO activity and
Eagleson M.
Concise Encyclopedia Chemistry, 291-291 (1994)
Litao Liu et al.
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 26(11), 1163-1167 (2010-11-17)
In this paper, a novel method has been established to determine ethamsylate using potassium ferricyanide as a spectroscopic probe reagent. It has been demonstrated that Fe(III) is reduced to Fe(II) by ethamsylate, and that the formed Fe(II) reacts with potassium
Xiao-Zhang Yu et al.
Ecotoxicology (London, England), 21(2), 548-556 (2011-11-10)
A study was conducted to investigate the contribution of β-cyanoalanine synthase (CAS) to the botanical metabolism of free cyanide and iron cyanides. Seedlings of rice (Oryza sativa L. cv. XZX 45) were grown hydroponically and then amended with free cyanide
Pinar Frank et al.
Optics letters, 37(17), 3603-3605 (2012-09-04)
Here we present a surface based on double-layered nanoparticle stacks suitable for spectro-electrochemical applications. The structure is formed on a continuous gold layer by a two-dimensional periodic array of stacks of gold and tantalum pentoxide nanodisks. Reflection spectra in the
Mark A Jordan et al.
Water research, 47(2), 841-849 (2012-12-04)
Representative and fast monitoring of wastewater influent and effluent biochemical oxygen demand (BOD) is an elusive goal for the wastewater industry and regulatory bodies alike. The present study describes a suitable assay, which incorporates activated sludge as the biocatalyst and
Islem Gandouzi et al.
Materials (Basel, Switzerland), 12(7) (2019-04-14)
Pyoverdine is a fluorescent siderophore produced by Pseudomonas aeruginosa that can be considered as a detectable marker in nosocomial infections. The presence of pyoverdine in water can be directly linked to the presence of the P. aeruginosa, thus being a
Andreea Bosînceanu et al.
Revista medico-chirurgicala a Societatii de Medici si Naturalisti din Iasi, 116(1), 330-335 (2012-10-20)
Amiodarone is an antiarrhythmic agent used for various types of tachyarrhythmia, both ventricular and supraventricular (atrial) arrhythmia. A spectrophotometric method for the assay of amiodarone was established. Based on the reduction of potassium ferricyanide in hydrochloric acid medium to potassium
Shao Su et al.
Nanoscale, 7(45), 19129-19135 (2015-11-03)
Herein, a facile approach for shape-controlled gold nanoparticle (AuNP) decorated thionine-MoS2 nanocomposites (AuNP-Thi-MoS2) had been reported by using the synergistic effect of MoS2 and Thi. Thi was not only used as an electrochemical indicator, but also as a reducing agent
Dorota Matyszewska et al.
Bioelectrochemistry (Amsterdam, Netherlands), 87, 192-198 (2012-01-03)
Langmuir monolayer studies and electrochemical methods were employed to investigate the effect of model membrane organization on the interactions with persistent pollutants such as perfluorinated carboxylic acids (PFCAs). 1,2-dimyristoyl-sn-glycero-3-phosphoethanoloamine (DMPE) was employed to construct the model lipid membrane and perfluorooctanesulphonic
Akhtar Hayat et al.
Analytica chimica acta, 724, 92-97 (2012-04-10)
Okadaic acid (OA), a lipophilic phycotoxin is mainly produced by toxigenic dinoflagellates. The need to develop high performing methods for OA analysis able to improve the traditional ones is evident. In this work, a novel experimental methodology for label-free detection
Tereza Skálová et al.
Acta crystallographica. Section F, Structural biology and crystallization communications, 67(Pt 1), 27-32 (2011-01-06)
The paper reports the structure of the small laccase from Streptomyces coelicolor determined from a crystal soaked with potassium hexacyanoferrate [K4Fe(CN)6]. The decolorization of the natively blue crystal observed upon soaking indicates the reduction of the enzyme in the crystal.
Anna Poladyan et al.
Current microbiology, 66(1), 49-55 (2012-10-12)
Glycerol and glucose fermentation redox routes by Escherichia coli and their regulation by oxidizing and reducing reagents were investigated at different pHs. Cell growth was followed by decrease of pH and redox potential (E ( h )). During glycerol utilization
R Bertrand et al.
Medical hypotheses, 78(1), 130-133 (2011-11-09)
Efforts to explore possible relationships between nitric oxide (NO) and antioxidant enzymes in an Escherichia coli model have uncovered a possible interaction between sodium nitroprusside (SNP), a potent, NO-donating drug, and the ferric uptake regulator (Fur), an iron(II)--dependent regulator of
Dmitriy Shevela et al.
Biochimica et biophysica acta, 1817(8), 1208-1212 (2012-04-17)
In this study we employ isotope ratio membrane-inlet mass spectrometry to probe the turnover efficiency of photosystem II (PSII) membrane fragments isolated from spinach at flash frequencies between 1Hz and 50Hz in the presence of the commonly used exogenous electron
Hideo Takakusa et al.
Drug metabolism and disposition: the biological fate of chemicals, 39(6), 1022-1030 (2011-03-03)
Lapatinib, an oral breast cancer drug, has recently been reported to be a mechanism-based inactivator of cytochrome P450 (P450) 3A4 and also an idiosyncratic hepatotoxicant. It was suggested that formation of a reactive quinoneimine metabolite was involved in mechanism-based inactivation
M V Pokrovskaia et al.
Prikladnaia biokhimiia i mikrobiologiia, 47(2), 183-186 (2011-03-01)
A specific, fast, and easy method for revelation of active plate producers of L-asparaginase using differential medium on the basis of LB or M9 with 1.5% agar was developed. Each 100 ml of LB or M9 medium additionally contained 6-7
Ezgi Bayram et al.
Artificial cells, nanomedicine, and biotechnology, 42(6), 418-422 (2013-07-25)
In the biosensor construction, 3-mercaptopropionic acid (3-MPA) and 6-aminocaproic acid (6-ACA) were used for forming self-assembled monolayer (SAM) on a gold disc electrode and pyruvate oxidase was immobilized on the modified electrode surface by using glutaraldehyde. Biosensor response is linearly
M Yokono et al.
Nature communications, 6, 6675-6675 (2015-03-27)
Throughout the history of oxygen evolution, two types of photosystem reaction centres (PSI and PSII) have worked in a coordinated manner. The oxygen evolving centre is an integral part of PSII, and extracts an electron from water. PSI accepts the
Alemnew Geto et al.
Environment international, 129, 400-407 (2019-06-04)
Bentazone is one of the most problematic pesticides polluting groundwater resources. It is on the list of pesticides that are mandatory to analyze at water work controls. The current pesticide measuring approach includes manual water sampling and time-consuming chromatographical quantification
Lu Han et al.
Journal of pharmaceutical and biomedical analysis, 58, 141-145 (2011-10-15)
In this paper, a novel chemiluminescence (CL) system, 2-phenyl-4, 5-di (2-furyl) imidazole (PDFI)-potassium ferricyanide, for the determination of terbutaline sulfate was described. The method was based on enhancement of CL emission of PDFI-potassium ferricyanide system in the presence of terbutaline
Liju Yang et al.
Biomedical microdevices, 13(2), 279-289 (2010-11-26)
Microlithographically fabricated interdigitated microsensor electrodes (IMEs) were cleaned, surface activated, chemically functionalized (amine) and derivatized with an Acrloyl-PEG-NHS to receive a spun-applied monomer cocktail of UV polymerizable monomer. IMEs were 2050.5, 1550.5, 1050.5 and 0550.5 possessing lines and spaces that
Jinkun Zhu et al.
Talanta, 93, 428-432 (2012-04-10)
As a kinetic process, chemiluminescence (CL) met great challenges while it was used in the detection methods coupled with capillary electrophoresis (CE). In this investigation, a newly recorded ultra-fast CL reaction of luminol-KIO(4)-K(3)Fe(CN)(6) was observed to be completed in 0.65
Daehee Kim et al.
ChemSusChem, 5(6), 1086-1091 (2012-05-10)
To scale-up microbial fuel cells (MFCs), installing multiple unit cells in a common reactor has been proposed; however, there has been a serious potential drop when connecting unit cells in series. To determine the source of the loss, a basic
Anna S Tarasova et al.
Environmental toxicology and chemistry, 30(5), 1013-1017 (2011-02-11)
The current study deals with the effect of humic substances (HS) on toxicity of solutions of a model inorganic oxidizer, potassium ferricyanide. Chemical reactions responsible for toxicity changes are under consideration. The bioluminescent system of coupled enzymatic reactions catalyzed by
Zhong-Duo Yang et al.
Phytochemical analysis : PCA, 22(6), 509-515 (2011-03-25)
Thin-layer chromatography (TLC) bioautographic method is a simple and rapid method to screen acetylcholinesterase inhibitors from plant extracts. However, the high consumption of enzyme (6 U/mL) in current methods makes the procedure expensive, which is an obstacle to scientific research centers
Suqin Han et al.
Journal of chromatography. B, Analytical technologies in the biomedical and life sciences, 878(28), 2901-2904 (2010-09-08)
A novel capillary electrophoresis (CE) with chemiluminescence (CL) detection method for the determination of mitoxantrone (MTX) has been developed, which based on the CL reaction of potassium ferricyanide with luminol in sodium hydroxide medium sensitized by MTX. Under optimum analytical
M R Abdollahi et al.
Gene, 487(1), 96-102 (2011-08-13)
The gus gene is one of the most frequently used reporter genes in transgenic plants. However, this gene can only be used if the selected plant species does not show endogenous GUS activity. Rapeseed (Brassica napus) microspores and microspore-derived embryos
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