Sensing the invisible: Ultra-low-level electrochemical detection of the microbe (Pseudomonas aeruginosa) on cobalt ferrite-doped silver nanocomposite (CoFe 2 O 4 /AgNPs) surfaces.

Autor: Shobana B; PG & Research Department of Chemistry, Thiagarajar College, affiliated to Madurai Kamaraj University, Madurai, Tamil Nadu, India., Sathish Kumar P; PG & Research Department of Chemistry, Thiagarajar College, affiliated to Madurai Kamaraj University, Madurai, Tamil Nadu, India; Magnetics Initiative Life Care Research Center, Daegu Gyeongbuk Institute of Science & Technology (DGIST), 333 Techno Jungang-daero, Hyeonpung-myeon, Dalseong-gun, Daegu 711-873, Republic of Korea., Renugadevi K; PG & Research Department of Zoology and Microbiology, Thiagarajar College, affiliated to Madurai Kamaraj University, Madurai, Tamil Nadu, India., Prakash P; PG & Research Department of Chemistry, Thiagarajar College, affiliated to Madurai Kamaraj University, Madurai, Tamil Nadu, India. Electronic address: prakash_chem@tcarts.in.
Jazyk: angličtina
Zdroj: Food chemistry [Food Chem] 2024 May 01; Vol. 439, pp. 138073. Date of Electronic Publication: 2023 Nov 25.
DOI: 10.1016/j.foodchem.2023.138073
Abstrakt: This study introduces an efficient electrochemical method for rapidly identifying the pathogen Pseudomonas aeruginosa (P. aeruginosa), which poses threats to individuals with compromised immune systems and cystic fibrosis. Unlike conventional techniques such as polymerase chain reaction, which fails to detect modifications in the resistant properties of microbes due to environmental stress, our proposed electrochemical approach offers a promising alternative. The characterisation analyses, involving microscopic and spectroscopic methods, reveal that the nanocomposite exhibits a crystalline structure, specific atomic vibrational patterns, a cubic surface shape, and distinct elemental compositions. This sensor demonstrates exceptional detection capabilities for P. aeruginosa, with a linear range of 1-23 CFU mL -1 and a low detection limit of 4.0 × 10 -3 CFU mL -1 . This research not only explores novel electrochemical techniques and the CoFe 2 O 4 /AgNPs nanocomposite but also their practical implications in food science, highlighting their relevance across various food samples, water, and soil.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2023 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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