Relevant bibliographies by topics / Hydrogen Peroxide Biosensor / Dissertations / Theses
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Dissertations / Theses on the topic 'Hydrogen Peroxide Biosensor'

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Published: 14 March 2023

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1

Ndangili, Peter Munyao. "Amperometric biosensor systems prepared on poly (aniline-ferrocenium hexafluorophosphate) composites doped with poly(vinyl sulfonic acid sodium salt)." Thesis, University of the Western Cape, 2008. http://etd.uwc.ac.za/index.php?module=etd&action=viewtitle&id=gen8Srv25Nme4_6605_1263418223.

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<p>The main hypothesis in this study is the development of a nanocomposite mediated amperometric biosensor for detection of hydrogen peroxide. The aim is to combine the electrochemical properties of both polyaniline and ferrocenium hexafluorophosphate into highly conductive nano composites capable of exhibiting electrochemistry in non acidic media<br>shuttling electrons between HRP and GCE for biosensor applications.</p>
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2

Arthur, Joshua N. "Hygroscopic insulator organic field effect transistor sensors." Thesis, Queensland University of Technology, 2022. https://eprints.qut.edu.au/232689/1/Joshua_Arthur_Thesis.pdf.

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Hygroscopic insulator field effect transistors (HIFETs) are organic transistors with promising characteristics for biosensing applications. However, their fundamental sensing mechanisms are not yet fully understood. This thesis explores HIFET sensors through detailed electrical and optical characterisation, providing vital insights into the distinct mechanisms by which HIFETs detect biologically relevant chemicals. Hydrogen peroxide, a by-product of enzymatic reactions, oxidises the organic semiconductor, modulating the output current. Ionic solutions, such as KCl, NaCl and HCl, modulate the c
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3

Kapita, Patrick Mvemba. "Development of Measurement Systems for Biosensing Applications." Doctoral thesis, Università di Siena, 2020. http://hdl.handle.net/11365/1111250.

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A health condition called “Oxidative Stress” (OS), resulting from an excessive level of Reactive Oxygen Species (ROS) is a “state harmful to the body, which arises when oxidative reactions exceed antioxidant reactions because the balance between them has been lost”[1] OS appears to be associated with and might be a cause of, many serious diseases such as cardio-vascular accidents, cancer, Parkinson’s and Alzheimer’s[2]. This is not surprising as ROS are free oxygen radicals that can attack lipids, proteins, cellular membranes, enzymes and even modify DNA. Extensive correlation studies have s
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4

Araminaitė, Rūta. "Study of electrocatalytic processes at Prussian blue modified glassy carbon electrode." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100213_101926-62386.

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The main purpose of this work is study of electrochemical hydrogen peroxide and ascorbate reactions on electrodes modified by Prussian blue (PB), with the aim to apply these electrodes in creation of sensors and biosensors. For this purpose, a detailed study of electrochemical reduction of hydrogen peroxide, as well as of oxidation of ascorbate at Prussian blue modified rotating disk electrode. In view of the results obtained, a mechanism for hydrogen peroxide reduction at PB modified electrode has been proposed. In accordance with this mechanism, electron transfer appears to be rate-limiting
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5

Araminaitė, Rūta. "Elektrokatalizinių procesų tyrimas ant Berlyno mėlynuoju modifikuoto stiklo anglies elektrodo." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20100213_101935-42979.

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Darbo tikslas yra elektrocheminių vandenilio peroksido ir askorbato reakcijų tyrimas ant Berlyno mėlynuoju (BM) modifikuotų elektrodų, siekiant pritaikyti šiuos elektrodus jutiklių ir biojutiklių kūrimui. Ištirta vandenilio peroksido redukciją ir askorbato oksidaciją naudojant sukamojo disko elektrodą. Gauti rezultatai galimai įrodo stadijinį vandenilio peroksido katodinės redukcijos mechanizmą vykstantį ant BM modifikuoto elektrodo. Detaliai ištirta BM sluoksnio irimo kinetika vandenilio peroksido elektroredukcijos metu, ir nustatyti faktoriai, įtakojantys irimo proceso greitį. Sukurti jutikl
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6

Mendes, Renata Kelly. "Investigação dos efeitos dos procedimentos de imobilização em monocamadas auto-organizadas da enzima peroidase no desenvolvimento de um biossensor." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/248400.

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Orientador: Lauro Tatsuo Kubota<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Quimica<br>Made available in DSpace on 2018-08-10T12:02:32Z (GMT). No. of bitstreams: 1 Mendes_RenataKelly_D.pdf: 1152307 bytes, checksum: c6e7b97417285a7bb4d70d28ba880353 (MD5) Previous issue date: 2006<br>Resumo: Neste trabalho foram investigados diferentes métodos de imobilização da enzima HRP empregando como matrizes as monocamadas auto-organizadas formadas sobre eletrodos de ouro, bem como a avaliação da influência do processo de imobilização do elemento biológico no desempenho analític
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7

Gonçales, Vinícius Romero. "Nanoestruturação de filmes finos para utilização em eletrodos enzimáticos." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/46/46136/tde-31012012-141924/.

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Os desafios atuais no desenvolvimento de biossensores abrangem diversos aspectos, tais como a necessidade de se aperfeiçoar a interface de contato entre o substrato e o material biológico, a eficiência de transdução do sinal químico em um sinal mensurável, o tempo de resposta, a compatibilidade dos biossensores com matrizes biológicas e a integração de diferentes elementos de reconhecimento biológico em um único dispositivo, visando a detecção de distintos analitos. Nesse contexto, o desenvolvimento da nanociência tem criado recursos bastante atraentes para otimizar os aspectos descritos acima
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8

Valencia, Germán Ayala. "Transporte eletrônico em biofilmes nanoestruturados para biossensores a base de enzimas." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/74/74132/tde-10072013-095546/.

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Os biossensores são dispositivos empregados para a detecção de um analito específico, podendo assim ser no controle de qualidade nos alimentos para determinar a presença de micro-organismos, toxinas ou metabólitos. O presente estudo objetiva desenvolver um biossensor condutométrico, baseado na imobilização de peroxidasse em membranas de quitosana e quitosana com nanopartículas de ouro (AuNP) para a detecção de peroxido de hidrogênio. O trabalho foi dividido em três etapas. Na primeira etapa foi estudada a obtenção de AuNP empregando agentes redutores biológicos, sendo avaliados três monossacar
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9

Jhai, You-syuan, and 翟祐暄. "Fabrication of Amperometric Hydrogen Peroxide Biosensor Based on Trisoctahedral Nano-Metallic Catalyst and its Applications." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/7a9fgh.

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碩士<br>國立臺灣科技大學<br>化學工程系<br>100<br>This study was comprised of two parts: (I) the synthesis of trisoctahedral gold nanocrystal (AuNC) and core-shell AuNCs@Pt catalysts for the applications of electrochemical sensing of hydrogen peroxide; (II) the immobilization of enzymatic species by adding cross-linking agent to fabricate electrochemical glucose sensor. For the first part, the surface morphology and crystal lattice of the synthesized nano-metallic catalysts were investigated using SEM, XRD. The synthesized AuNCs showed many active sites due to their polyhedral structure. In order to enhance t
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10

Kosto, Yuliia. "Studium tenkých vrstev oxidu ceru pro biosenzorické aplikace." Doctoral thesis, 2021. http://www.nusl.cz/ntk/nusl-439696.

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Title: Study of cerium oxide thin films for biosensing applications Author: Yuliia Kosto Department: Department of Surface and Plasma Science Supervisor: Prof. RNDr. Vladimír Matolín, DrSc. Abstract: The presented scientific work was conducted in two main directions. The first one is an investigation of the simple biomolecules (glycine and sarcosine) bonding to cerium oxide model films by surface science techniques: photoelectron and near-edge X-ray absorption spectroscopies. Adsorption chemistry and thermal stability of the molecules on the oxides were studied in relation to the oxidation sta
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11

Wu, Yi-Jing, and 吳依靜. "Synthesis and Electrocatalytic Behavior of Co3O4 toward Reduction of Hydrogen Peroxide and Its Application in Development of Uric Acid Biosensor." Thesis, 2014. http://ndltd.ncl.edu.tw/handle/7eh4ca.

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碩士<br>淡江大學<br>化學學系碩士班<br>102<br>In current study, a cobalt oxide based uric acid biosensor is fabricated through a drop coating of glutaraldehyde, and uricase onto a BSA coated Co3O4 based rotating disc graphite electrode (RGDE). Uric acid is measured via an uricase based Co3O4 modified biosensor cathodicly. The amperometric signal of this sensor is measured based on the uricase converts uric acid into hydrogen peroxide and reduces by Co3O4. The homemade cobalt oxide fabricated by hydrothermal synthesis is better than the commercial one. Qualitative analysis and morphology of cobalt oxide was
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12

Martins, João Pedro de Sousa. "Relatórios de Estágio e Monografia intitulada “Os desafios bioanalíticos na deteção e monitorização de peróxido de hidrogénio na sinalização redox”." Master's thesis, 2021. http://hdl.handle.net/10316/98979.

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Relatório de Estágio do Mestrado Integrado em Ciências Farmacêuticas apresentado à Faculdade de Farmácia<br>As espécies reativas de oxigénio são um grupo de moléculas derivadas do oxigénio, que são formadas por redução-oxidação (redox) ou por excitação eletrónica, e que têm diferentes distribuições temporais e espaciais e uma ampla gama de concentrações intracelulares e extracelulares. O peróxido de hidrogénio é umas destas espécies com mais interesse ao nível da sinalização redox celular sendo que as suas concentrações podem desencadear diferentes respostas, existindo níveis limiares que sepa
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13

Stachowicz, Sylwia. "Sensory zasilane bioogniwem." Doctoral thesis, 2018.

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Niniejsza praca poświęcona jest opracowaniu bioelektrod do enzymatycznego oznaczania stężenia neuroprzekaźników, tlenu oraz nadtlenku wodoru w zintegrowanym układzie sensorowym, zasilanym enzymatycznym bioogniwem. Zaprojektowane biourządzenie wykorzystywało łączność bezprzewodową do transferu wyników pomiarowych z czujnika bezpośrednio do komputera. Celem badań było skonstruowanie nieinwazyjnego i taniego układu z możliwością jego łatwej i samodzielnej obsługi.Do elektrochemicznego oznaczania nadtlenku wodoru posłużył bienzymatyczny czujnik - elektroda węglowa pokryta nanorurkami węglowymi, sk
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14

Kuo, Pao-Tsai, and 郭寶財. "A Factorial Design for Analysis of the Effect of Reaction Parameters on the Responding Current of Detection of Hydrogen Peroxide for the Carbon Paste Electrode Modified with the Ferrocene and Its Application to the Glucose Biosensor." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/15130713599836922205.

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碩士<br>南台科技大學<br>化學工程與材枓工程系<br>95<br>ABSTRACT Nowadays, sometimes the hydrogen peroxide is used in the food industry for the purpose of preservation and therefore, developing a hydrogen peroxide sensor is an important research subject. In recent years, the diabetes has become one of the top ten causes of death for the people in our country. Therefore, developing a glucose biosensor which can detect the glucose rapidly and conveniently is also an important research subject. The glucose and oxygen can be catalyzed by the glucose oxidase to produce the gluconic acid and hydrogen peroxide. A study
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15

Hsiao, Chia-Cheng, and 蕭佳政. "A Factorial Design for Analysis of the Effect of Reaction Parameters on the Responding Current of Detection of Hydrogen Peroxide for the Carbon Paste Electrode Modified with the Copper Hexacyanoferrate and Its Application to the Glucose Biosensor." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/22893503291168946569.

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碩士<br>南台科技大學<br>化學工程與材枓工程系<br>95<br>Due to an occasional use of hydrogen peroxide in the food industry for the purpose of preservation nowadays, a rapid and convenient sensor for detecting the hydrogen peroxide is an important research subject. In recent years, diabetes has become one of the top ten causes of death for the people in our country and therefore, a convenient and rapid glucose biosensor also has become an important research subject. The glucose and oxygen can be catalyzed by the glucose oxidase and the glucose is oxidized to gluconic acid and the oxygen is reduced to hydrogen pero
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16

Chen, Chien-Chung, and 陳建中. "The techniques and characterizations for constructing hydrogen peroxide biosensors by conductive polyaniline." Thesis, 2009. http://ndltd.ncl.edu.tw/handle/20632995425079304316.

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博士<br>東海大學<br>化學工程與材料工程學系<br>97<br>In this study, the PANI or PANI(BSA) films was electrochemically synthesized on the Pt/Al2O3 base to form the PANI/Pt/Al2O3 or PANI(BSA)/Pt/Al2O3 electrode, and horseradish peroxidase (HRP) was then immobilized in PANI or PANI(BSA) films to construct the GA-HRP/PANI/Pt/Al2O3 or GA-HRP/PANI(BSA)/Pt/Al2O3 biosensor. Furthermore, the mesoporous silica SBA-15 was prepared and was employed to entrap HRP in order to construct a GA/SBA-15(HRP)/PANI/Pt/Al2O3 electrode. The properties and the performances of those bio-electrodes were fully investigated. Moreover, the
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17

Chen, Jing-Jie, and 陳敬捷. "Development of localized surface plasmon resonance biosensors for detecting hydrogen peroxide released from living cells." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/uk466r.

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18

hsiang, liao kuo, and 廖國翔. "A Study of the Carbon Paste Electrode Modified With Ruthenium Hexacyanoferrate(Ⅱ)and Its Applications to the Amperometric Hydrogen Peroxide Sensors and Glucose Biosensors." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/43488846739665530693.

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碩士<br>南台科技大學<br>化學工程與材枓工程系<br>94<br>ABSTRACT In recent years, diabetes has become one of the top ten causes of death for people in our country. Therefore, a rapid and convenient glucose biosensor becomes an important research subject. Nowadays, sometimes the preservatives are used in the food industry for the purpose of food preservation. Therefore, a hydrogen peroxide sensor also becomes an important research subject. The glucose and oxygen can be catalyzed by the glucose oxidase and the glucose is oxidized to gluconic acid and the oxygen is reduced to hydrogen peroxide. The electrode releas
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19

(5930366), Siddarth Vyraghrapuri Sridharan. "EXTRACELLULAR METABOLIC PROFILING: MEASUREMENT OF SURFACE CONCENTRATIONS AND FLUXES TO DETERMINE CELLULAR KINETICS FROM 2D CULTURES USING ELECTROCHEMICAL MICROELECTRODE ARRAYS." Thesis, 2020.

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In 2D cell cultures uptake/release of various metabolic analytes such as glucose, lactate or metabolic by-products like hydrogen peroxide from/to the extracellular environment results in concentration gradients. The magnitude, direction, and time scales of these gradients carries information that is essential for internal cellular processes and/or for communication with neighboring cells. This PhD research work focusses on the design, fabrication and characterization of electrochemical microelectrode arrays (MEAs) optimized to be positioned in commonly used 2D cell culture setups. Importantly,
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