Simple and sensitive galactose monitoring based on capillary SERS sensor
Analytical and Bioanalytical Chemistry, ISSN: 1618-2650, Vol: 416, Issue: 16, Page: 3811-3819
2024
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Article Description
Galactosemia, a severe genetic metabolic disorder, results from the absence of galactose-degrading enzymes, leading to harmful galactose accumulation. In this study, we introduce a novel capillary-based surface-enhanced Raman spectroscopy (SERS) sensor for convenient and sensitive galactose detection. The developed sensor enhances SERS signals by introducing gold nanoparticles (Au NPs) onto the surface of silver nanoshells (Ag NSs) within a capillary, creating Ag NSs with Au NPs as satellites. Utilizing 4-mercaptophenylboronic acid (4-MPBA) as a Raman reporter molecule, the detection method relies on the conversion of 4-MPBA to 4-mercaptophenol (4-MPhOH) driven by hydrogen peroxide (HO) generated during galactose oxidation by galactose oxidase (GO). A new SERS signal was observed, which was generated by HO produced when galactose and GO reacted. Our strategy yielded a quantitative change in the SERS signal, specifically in the band intensity ratio of 998 to 1076 cm (I/I) as the galactose concentration increased. Our capillary-based SERS biosensor provides a promising platform for early galactosemia diagnosis. Graphical Abstract: (Figure presented.)
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85191968155&origin=inward; http://dx.doi.org/10.1007/s00216-024-05322-9; http://www.ncbi.nlm.nih.gov/pubmed/38702448; https://link.springer.com/10.1007/s00216-024-05322-9; https://dx.doi.org/10.1007/s00216-024-05322-9; https://link.springer.com/article/10.1007/s00216-024-05322-9
Springer Science and Business Media LLC
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