Torné-Morató H, Donati P, Pompa PP. Nanoplasmonic Strip Test for Salivary Glucose Monitoring.
NANOMATERIALS 2021;
12:nano12010105. [PMID:
35010055 PMCID:
PMC8746375 DOI:
10.3390/nano12010105]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 12/23/2021] [Accepted: 12/27/2021] [Indexed: 12/19/2022]
Abstract
Nowadays, there is an increasing interest in Point-of-care (POC) devices for the noninvasive glucose assessment. Despite the recent progress in glucose self-monitoring, commercially available devices still use invasive samples such as blood or interstitial fluids, and they are not equipment-free and affordable for the whole population. Here, we report a fully integrated strip test for the semi-quantitative detection of glucose in whole saliva. The colorimetric mechanism consists of an enzyme-mediated reshaping of multibranched gold nanoparticles (MGNPs) into nanospheres with an associated plasmonic shift and consequent blue-to-red color change, clearly detectable in less than 10 min.
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