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Boosting the Electrochemical Performance of PI-5-CA/C-SWCNT Nanohybrid for Sensitive Detection of E. coli O157:H7 From the Real Sample

Wang, Huan (author)
Huazhong Univ Life Sci & Technol, Coll Life Sci & Technol, Adv Biomat & Tissue Engn Ctr, Wuhan, Peoples R China.
Fan, Yanmiao (author)
KTH,Ytbehandlingsteknik
Yang, Qiaoli (author)
Huazhong Univ Life Sci & Technol, Coll Life Sci & Technol, Adv Biomat & Tissue Engn Ctr, Wuhan, Peoples R China.
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Sun, Xiaoyu (author)
Huazhong Univ Life Sci & Technol, Coll Life Sci & Technol, Adv Biomat & Tissue Engn Ctr, Wuhan, Peoples R China.
Liu, Hao (author)
Huazhong Univ Life Sci & Technol, Coll Life Sci & Technol, Adv Biomat & Tissue Engn Ctr, Wuhan, Peoples R China.
Chen, Wei (author)
Huazhong Univ Life Sci & Technol, Coll Life Sci & Technol, Adv Biomat & Tissue Engn Ctr, Wuhan, Peoples R China.
Aziz, Ayesha (author)
Huazhong Univ Life Sci & Technol, Coll Life Sci & Technol, Adv Biomat & Tissue Engn Ctr, Wuhan, Peoples R China.
Wang, Shenqi (author)
Huazhong Univ Life Sci & Technol, Coll Life Sci & Technol, Adv Biomat & Tissue Engn Ctr, Wuhan, Peoples R China.
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Huazhong Univ Life Sci & Technol, Coll Life Sci & Technol, Adv Biomat & Tissue Engn Ctr, Wuhan, Peoples R China Ytbehandlingsteknik (creator_code:org_t)
2022-02-10
2022
English.
In: Frontiers in Chemistry. - : Frontiers Media SA. - 2296-2646. ; 10
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • Redox activity is an important indicator for evaluating electrochemical biosensors. In this work, we have successfully polymerized indole-5-carboxylic acid into poly-5-carboxyindole nanomaterials (PI-5-CA), using its superior redox activity, and introduced carboxylated single-walled carbon nanotubes (C-SWCNTs) to synthesize a composite material. Finally, a synthesized composite material was used for the modification of the glass carbon electrode to fabricate the PI-5-CA/C-SWCNTs/GCE-based immunosensor and was successfully applied for the sensitive detection of E. coli O157:H7. The fabricated immunosensor exhibited an outstanding electrocatalytic activity toward the detection of E. coli O157:H7 with a remarkably lowest limit of detection (2.5 CFU/ml, LOD = 3 SD/k, n = 3) and has a wide linear range from 2.98x10(1) to 2.98x10(7) CFU/ml. Inspired from the excellent results, the fabricated electrode was applied for the detection of bacteria from real samples (water samples) with a good recovery rate (98.13-107.69%) as well as an excellent stability and specificity. Owing to its simple preparation, excellent performance, and detection time within 30 min, our proposed immunosensor will open a new horizon in different fields for the sensitive detection of bacteria from real samples.

Subject headings

LANTBRUKSVETENSKAPER  -- Lantbruksvetenskap, skogsbruk och fiske -- Livsmedelsvetenskap (hsv//swe)
AGRICULTURAL SCIENCES  -- Agriculture, Forestry and Fisheries -- Food Science (hsv//eng)
NATURVETENSKAP  -- Biologi -- Mikrobiologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences -- Microbiology (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP  -- Medicinska och farmaceutiska grundvetenskaper -- Mikrobiologi inom det medicinska området (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Basic Medicine -- Microbiology in the medical area (hsv//eng)

Keyword

poly-5-carboxyindole
carboxylated single-walled carbon nanotubes
E. coli O157:H7
electrochemical immunosensor
indole-5-carboxylic acid
plate counting method

Publication and Content Type

ref (subject category)
art (subject category)

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