TY - GEN
T1 - Biofunctionalization process of a-SiC:H surfaces applied to an interdigitated microelectrode array to detect enterotoxigenic Escherichia coli
AU - Herrera-Celis, José
AU - Reyes-Betanzo, Claudia
AU - Orduña-Díaz, Abdu
AU - Pérez-Coyotl, Ana
AU - Hernández-Flores, Armando
AU - Morales-Chávez, Janet
AU - Culebro-Gomez, Arely
N1 - Publisher Copyright:
© Springer Nature Singapore Pte Ltd. 2017.
PY - 2017
Y1 - 2017
N2 - A biofunctionalization process of a-SiC:H surfaces has been applied to an interdigitated microelectrode array (IMA) whose microelectrodes are covered by this material. The biofunctionalization process has been monitored stage by stage using Fourier transform infrared spectroscopy (FTIR), while its effects on the electrical behavior of the IMA were recorded in electrical impedance spectra. The process involves hydroxylation, silanization, generation of aldehyde groups, binding via protein A, immobilization of anti-Escherichia coli polyclonal antibodies, entrapping and detection of enterotoxigenic Escherichia coli (ETEC) in Luria-Bertani medium. The FTIR spectra confirm the success of the process. Regarding the performance of the IMA, although the detection of ETEC is successful and its percentage change in impedance reaches a value of 133.37% to 107 CFU/mL, some considerations may be taken into account to improve the sensitivity of the IMA by mean of the optimization of both the IMA design and the biofunctionalization process.
AB - A biofunctionalization process of a-SiC:H surfaces has been applied to an interdigitated microelectrode array (IMA) whose microelectrodes are covered by this material. The biofunctionalization process has been monitored stage by stage using Fourier transform infrared spectroscopy (FTIR), while its effects on the electrical behavior of the IMA were recorded in electrical impedance spectra. The process involves hydroxylation, silanization, generation of aldehyde groups, binding via protein A, immobilization of anti-Escherichia coli polyclonal antibodies, entrapping and detection of enterotoxigenic Escherichia coli (ETEC) in Luria-Bertani medium. The FTIR spectra confirm the success of the process. Regarding the performance of the IMA, although the detection of ETEC is successful and its percentage change in impedance reaches a value of 133.37% to 107 CFU/mL, some considerations may be taken into account to improve the sensitivity of the IMA by mean of the optimization of both the IMA design and the biofunctionalization process.
KW - Biofunctionalization process
KW - Electrical impedance spectroscopy
KW - Enterotoxigenic Escherichia coli
KW - Fourier transform infrared spectroscopy
KW - Hydrogenated amorphous silicon carbide
UR - http://www.scopus.com/inward/record.url?scp=85018407882&partnerID=8YFLogxK
U2 - 10.1007/978-981-10-4086-3_9
DO - 10.1007/978-981-10-4086-3_9
M3 - Contribución a la conferencia
AN - SCOPUS:85018407882
SN - 9789811040856
T3 - IFMBE Proceedings
SP - 34
EP - 37
BT - 7th Latin American Congress on Biomedical Engineering, CLAIB 2016
A2 - Bustamante, John
A2 - Sierra, Daniel A.
A2 - Torres, Isnardo
PB - Springer Verlag
T2 - 7th Latin American Congress on Biomedical Engineering, CLAIB 2016
Y2 - 26 October 2016 through 28 October 2016
ER -