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Jang SW, Kim JS, Park JB, Jung JH, Park CS, Shin WC, Ha SJ. Characterization of the starch degradation activity from newly isolated Rhizopus oryzae WCS-1 and mixed cultures with Saccharomyces cerevisiae for efficient ethanol production from starch. Food Sci Biotechnol 2015. [DOI: 10.1007/s10068-015-0235-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Guadarrama-Fernández L, Chanona-Pérez J, Manzo-Robledo A, Calderón-Domínguez G, Martínez-Rivas A, Ortiz-López J, Vargas-García JR. Characterization of functionalized multiwalled carbon nanotubes for use in an enzymatic sensor. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2014; 20:1479-1485. [PMID: 25156941 DOI: 10.1017/s143192761401304x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Carbon nanotubes (CNT) have proven to be materials with great potential for the construction of biosensors. Development of fast, simple, and low cost biosensors to follow reactions in bioprocesses, or to detect food contaminants such as toxins, chemical compounds, and microorganisms, is presently an important research topic. This report includes microscopy and spectroscopy to characterize raw and chemically modified multiwall carbon nanotubes (MWCNTs) synthesized by chemical vapor deposition with the intention of using them as the active transducer in bioprocessing sensors. MWCNT were simultaneously purified and functionalized by an acid mixture involving HNO3-H2SO4 and amyloglucosidase attached onto the chemically modified MWCNT surface. A 49.0% decrease in its enzymatic activity was observed. Raw, purified, and enzyme-modified MWCNTs were analyzed by scanning and transmission electron microscopy and Raman and X-ray photoelectron spectroscopy. These studies confirmed purification and functionalization of the CNTs. Finally, cyclic voltammetry electrochemistry was used for electrical characterization of CNTs, which showed promising results that can be useful for construction of electrochemical biosensors applied to biological areas.
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Affiliation(s)
- Leonor Guadarrama-Fernández
- 1Departamento de Ingeniería Bioquímica,Escuela Nacional de Ciencias Biológicas,Instituto Politécnico Nacional,Plan de Ayala y Carpio S/N,Colonia Santo Tomas,CP 11340 México City,México
| | - Jorge Chanona-Pérez
- 1Departamento de Ingeniería Bioquímica,Escuela Nacional de Ciencias Biológicas,Instituto Politécnico Nacional,Plan de Ayala y Carpio S/N,Colonia Santo Tomas,CP 11340 México City,México
| | - Arturo Manzo-Robledo
- 2Laboratorio de Electroquímica y Corrosión,Escuela Superior de Ingeniería Química e Industrias Extractivas,Instituto Politécnico Nacional,Edif. Z-5, 3er. Piso. UPALM-Zacatenco,CP 07738,México City,México
| | - Georgina Calderón-Domínguez
- 1Departamento de Ingeniería Bioquímica,Escuela Nacional de Ciencias Biológicas,Instituto Politécnico Nacional,Plan de Ayala y Carpio S/N,Colonia Santo Tomas,CP 11340 México City,México
| | - Adrián Martínez-Rivas
- 3Centro de Investigación en Computación,Instituto Politécnico Nacional,Av. Juan de Dios Bátiz s/n casi esquina Miguel Othón de Mendizábal,UPALM-Zacatenco,C.P. 07738,Del. Gustavo A. Madero,Mexico City,Mexico
| | - Jaime Ortiz-López
- 4Escuela Superior de Físico Matemáticas,Instituto Politécnico Nacional,Edif. 9 UPALM-Zacatenco,CP 07738,México City,México
| | - Jorge Roberto Vargas-García
- 5Escuela Superior de Ingeniería Química e Industrias Extractivas,Instituto Politécnico Nacional,Edif 7,UPALM-Zacatenco,CP 07738,México City,México
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Immobilization of amyloglucosidase from SSF of Aspergillus niger by crosslinked enzyme aggregate onto magnetic nanoparticles using minimum amount of carrier and characterizations. ACTA ACUST UNITED AC 2013. [DOI: 10.1016/j.molcatb.2013.09.015] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Antony N, Balachandran S, Mohanan PV. Effect of Surfactants on Catalytic Activity of Diastase α-Amylase. J SURFACTANTS DETERG 2013. [DOI: 10.1007/s11743-013-1531-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Gupta K, Jana AK, Kumar S, Maiti M. Immobilization of α-amylase and amyloglucosidase onto ion-exchange resin beads and hydrolysis of natural starch at high concentration. Bioprocess Biosyst Eng 2013; 36:1715-24. [DOI: 10.1007/s00449-013-0946-y] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Accepted: 03/24/2013] [Indexed: 11/28/2022]
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