Results 251 to 260 of about 80,355 (300)

The direct electrochemistry of viable Escherichia coli

Journal of Electroanalytical Chemistry, 2021
Abstract We developed a novel method of microwave irradiation to deal with Escherichia coli (E. coli), realized the trans-membrane and trans-wall direct electron transfer of Guanine in viable E. coli. Typical surface controlled irreversible electrode process of E. coli was achieved by cyclic voltammetry with the participating of two electrons and two
Jing Zhang, Qiaoling Sun, Haowen Tang, Yuying Qian, Yanpei Chen, Xia Shan, Xiaojun Liu, Haiying Gu   +7 more
openaire   +1 more source

Direct Electrochemistry of Immobilized Human Cytochrome P450 2E1

Journal of the American Chemical Society, 2004
This communication reports the first electrochemical study of the human P450 2E1 either absorbed or covalently linked to different electrode surfaces. Glassy-carbon and gold electrodes gave reversible electrochemical signals of an active P450 2E1. Molecular modeling of the enzyme helped to rationalize the results.
FANTUZZI, A., FAIRHEAD, M., GILARDI, Gianfranco, G.   +3 more
openaire   +3 more sources

Direct Electrochemistry of Polyphenol Oxidase

2014
The electrochemistry of banana tissues on a carbon paste electrode modified with multi-walled carbon nanotubes (MWCNTs) is presented. Cyclic voltammetry is applied to investigate the direct electrochemistry of banana tissues i.e. a source of polyphenol oxidase (PPO). A redox couple with an anodic and counterpart cathodic peak is obtained. The influence
Raoof, Jahan Bakhsh, Kiani, Abolfazl, Ojani, Reza, Valiollahi, Roudabeh   +3 more
openaire   +1 more source

Direct Electrochemistry of Myoglobin in Titanate Nanotubes Film

Analytical Chemistry, 2005
Titanate nanotubes (TNT) were proven to be efficient support matrixes for the immobilization of myoglobin (Mb). A comparative study was performed using the corresponding analogue, nanocrystalline anatase TiO2 (TNP). UV-visible absorption and FT-IR spectra show that Mb was not obviously denatured in TNT film in contrast to the significant denaturation ...
Aihua, Liu, Mingdeng, Wei, Itaru, Honma, Haoshen, Zhou   +3 more
openaire   +2 more sources

Chitosan-Promoted Direct Electrochemistry of Human Sulfite Oxidase

The Journal of Physical Chemistry B, 2017
Direct electrochemistry of human sulfite oxidase (HSO) has been achieved on carboxylate-terminated self-assembled monolayers cast on a Au working electrode in the presence of the promoter chitosan. The modified electrode facilitates a well-defined nonturnover redox response from the heme cofactor (FeIII/II) in 750 mM Tris, MOPS, and bicine buffer ...
Palraj Kalimuthu, Abdel A. Belaidi, Guenter Schwarz, Paul V. Bernhardt   +3 more
openaire   +3 more sources

Direct Quantification of Nanoplastics Neurotoxicity by Single‐Vesicle Electrochemistry

Angewandte Chemie, 2023
AbstractNanoplastics are recently recognized as neurotoxic factors for the nervous systems. However, whether and how they affect vesicle chemistry (i.e., vesicular catecholamine content and exocytosis) remains unclear. This study offers the first direct evidence for the nanoplastics‐induced neurotoxicity by single‐vesicle electrochemistry.
Shiyi Wei, Fei Wu, Jing Liu, Wenliang Ji, Xiulan He, Ran Liu, Ping Yu, Lanqun Mao   +7 more
openaire   +2 more sources

Direct electrochemistry of catalase on glassy carbon electrodes

Bioelectrochemistry, 2002
Catalase was investigated as a possible catalyst of the electrochemical reduction of oxygen on glassy carbon electrodes. The presence of catalase dissolved in solution only provoked a moderate current increase, which was fully explained by the catalase-catalysed disproportionation of hydrogen peroxide (Scheme I).
M E, Lai, A, Bergel
openaire   +2 more sources

Direct electrochemistry of hemoglobin in gold nanowire array

Biosensors and Bioelectronics, 2007
Gold nanowire array has been proven to be efficient support matrixes for the immobilization of hemoglobin (Hb). The vertically oriented nanowire array provides an ordered well-defined 3D structure with nanowire density approximately 5 x 10(8)cm(2). The adsorption of ferritin onto the nanowire surface was visualized by transmission electron microscopy ...
Minghui, Yang, Fengli, Qu, Yongjun, Li, Yan, He, Guoli, Shen, Ruqin, Yu   +5 more
openaire   +2 more sources

Direct Electrochemistry of Proteins and Enzymes

1991
Publisher Summary This chapter discusses direct electrochemistry of metalloproteins and redox enzymes. The electron transport chain is composed of a number of electron transfer complexes firmly bound to the biological membrane, and electron-carrying groups in these complexes are flavins, iron–sulfur clusters, heme groups, and copper ions.
Liang-Hong Guo, H. Allen, O. Hill
openaire   +1 more source

Direct electrochemistry of cholesterol oxidase on MWCNTs

Journal of Electroanalytical Chemistry, 2011
Abstract The direct electrochemistry of cholesterol oxidase (ChOx) was achieved on the surface of graphite electrode by immobilizing positively charged ChOx and negatively charged multi walled carbon nanotubes through electrostatic interaction using layer-by-layer technique. Two sets of well defined redox peaks were observed in cyclic voltammogram of
Revanasiddappa Manjunatha, Dodahalli Hanumantharayudu Nagaraju, Gurukar Shivappa Suresh, Jose Savio Melo, Stanislaus F. D’Souza, Thimmappa Venkatarangaiah Venkatesha   +5 more
openaire   +1 more source