ArticleMikrochimica acta2025
Array-based specific classification of bacterial species via the redox state transition of riboflavin.
Article in Mikrochimica acta, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
We observed redox state transitions of riboflavin (Rf) upon incubation with gram-positive (G+) or gram-negative (G-) bacteria. The consequent transitions based on the proton-coupled electron transfer (PCET) reaction alters the reducibility and oxidability of Rf, providing a novel mechanism for specific classification of G- and G + bacterial species and discrimination of different bacterial strains. Thus, a colorimetric/fluorometric sensor array based on silver nanotriangles (AgNTs) and Rf was established, offering dosimetric identification of 14 bacterial and 12 mixed bacterial samples. G- and G+ bacteria could be easily classified by the color change in AgNTs; different bacterial strains were also well discriminated via the fluorescent variation of Rf. This rapid and efficient sensor array with dual detection modalities provides a biochemical mechanism for the rapid differentiation of bacterial species and strains and presents potential applications in both clinical microbiology and bacteriology.
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