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- W2796002685 abstract "The high incidence of Diabetes Mellitus in low-income regions has promoted the development of low-cost alternatives to replace blood-based procedures. In this work, we present a bienzymatic paper-based sensor suitable for the naked-eye detection of glucose in saliva samples. The sensor was obtained by a stamping procedure and modified with chitosan to improve the colorimetric readout. The bienzymatic reaction of GOx-HRP coupled with 2,4,6-tribromo-3-hydroxy benzoic acid was applied for the detection of glucose within a range from 0 to 180 mgdL-1 in buffer and artificial saliva solutions. The visual readout was perceived by the naked eye and registered with an office scanner to evaluate the analytical performance. The results showed a limit of detection of 0.37 mgdL-1 (S/N = 3) with an R.S.D. of 1.69% and a linear range from 1 to 22.5 mgdL-1 with an R² of 0.99235. The analysis of human saliva samples was performed without pre-processing, achieving recoveries from 92 to 114%. The naked-eye detection was evaluated under two different light settings, showing average recoveries of 108.58 and 90.65% for standard and low illumination. The proposed device showed potential for easy-to-use, sensitive, low-cost, fast, and device-free detection of salivary glucose suitable for untrained personnel operation and limited facilities." @default.
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- W2796002685 date "2018-04-03" @default.
- W2796002685 modified "2023-10-06" @default.
- W2796002685 title "Naked-Eye Detection of Glucose in Saliva with Bienzymatic Paper-Based Sensor" @default.
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- W2796002685 doi "https://doi.org/10.3390/s18041071" @default.
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