Biomimetic sensor based on Mn(III) meso-tetra(N-methyl-4-pyridyl) porphyrin for non-enzymatic electrocatalytic determination of hydrogen peroxide and as an electrochemical transducer in oxidase biosensor for analysis of biological media

2020 ◽  
Vol 321 ◽  
pp. 128437
Author(s):  
Ruiqin Peng ◽  
Andreas Offenhäusser ◽  
Yuri Ermolenko ◽  
Yulia Mourzina
Keyword(s):  
Hydrogen Peroxide ◽  
Biological Media ◽  
Electrocatalytic Determination ◽  
Biomimetic Sensor ◽  
Electrochemical Transducer

Fabrication of a glycation induced amyloid nanofibril and polyalizarin yellow R nanobiocomposite: Application for electrocatalytic determination of hydrogen peroxide

2019 ◽  
Vol 123 ◽  
pp. 1297-1304 ◽  
Author(s):  
Nader Amini ◽  
Mohammad Bagher Gholivand ◽  
Mojtaba Shamsipur ◽  
Ali Akbar Moosavi Movahedi ◽  
Sara Farahi ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Electrocatalytic Determination

Development of novel bioelectrocatalytic platform based on in situ generated gold nanoparticles for biomedical applications

2012 ◽  
Vol 1418 ◽  
Author(s):  
Prem C. Pandey ◽  
Dheeraj S. Chauhan
Keyword(s):  
Hydrogen Peroxide ◽  
Gold Nanoparticles ◽  
Biomedical Applications ◽  
Potassium Ferricyanide ◽  
Organically Modified Silicates ◽  
Organically Modified ◽  
Electrocatalytic Determination ◽  
Aunp Surface

ABSTRACTGold nanoparticles (AuNp) formed using alkoxysilane precursors are utilized in the development of thin organically modified silicates (ormosil) films. The resulting films are optically transparent thereby retaining the optical properties of AuNp. Surface morphology shows that the in situ generated AuNp retained their nanogeometry in the ormosil films. An application of the AuNp encapsulated ormosils is shown in electrocatalytic determination of hydrogen peroxide. For this purpose, potassium ferricyanide is chosen as electron transfer mediator and is encapsulated in the films. Results show that the presence of AuNp in the ormosil matrix dramatically improves the electrochemical behavior of potassium ferricyanide. The ormosil films are utilized for electrocatalytic determination of hydrogen peroxide. In order to investigate the biocompatibility of the ormosil film, horseradish peroxidase (HRP) is incorporated resulting in improvement in oxidation and reduction of peroxide.

Enzymatic colorimetry of lecithin and sphingomyelin in aqueous solution.

1983 ◽  
Vol 29 (8) ◽  
pp. 1513-1517 ◽  
Author(s):  
M W McGowan ◽  
J D Artiss ◽  
B Zak
Keyword(s):  
Aqueous Solution ◽  
Hydrogen Peroxide ◽  
Amniotic Fluid ◽  
Enzymatic Reaction ◽  
Detergent Solution ◽  
Enzymatic Determination ◽  
Red Color ◽  
Hydrolysis Of ◽  
Zwitterionic Detergent

Abstract A procedure for the enzymatic determination of lecithin and sphingomyelin in aqueous solution is described. The phospholipids are first dissolved in chloroform:methanol (2:1 by vol), the solvent is evaporated, and the residue is redissolved in an aqueous zwitterionic detergent solution. The enzymatic reaction sequences of both assays involve hydrolysis of the phospholipids to produce choline, which is then oxidized to betaine, thus generating hydrogen peroxide. The hydrogen peroxide is subsequently utilized in the enzymatic coupling of 4-aminoantipyrine and sodium 2-hydroxy-3,5-dichlorobenzenesulfonate, an intensely red color being formed. The presence of a non-reacting phospholipid enhances the hydrolysis of the reacting phospholipid. Thus we added lecithin to the sphingomyelin standards and sphingomyelin to the lecithin standards. This precise procedure may be applicable to determination of lecithin and sphingomyelin in amniotic fluid.

scholarly journals Determination of Hydrogen Peroxide with Peroxidase Adsorbed Carbon Electrode

1982 ◽  
Vol 102 (12) ◽  
pp. 1120-1123 ◽  
Author(s):  
HIROYUKI IWAI ◽  
SUMIYUKI AKIHAMA
Keyword(s):  
Hydrogen Peroxide ◽  
Carbon Electrode ◽  
Adsorbed Carbon
Sign in / Sign up

Export Citation Format

Share Document