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Detection of Human Plasma Glucose Using a Self-Powered Glucose Biosensor

Author

Listed:
  • Gymama Slaughter

    (Frank Reidy Research Center for Bioelectrics, Department of Electrical and Computer Engineering, Old Dominion University, Norfolk, VA 23508, USA)

  • Tanmay Kulkarni

    (Department of Biochemistrry and Molecular Biology, Mayo Clinic, Jacksonville, FL 32224, USA)

Abstract

This work presents the characterization of a self-powered glucose biosensor using individual sequential assays of human plasma glucose obtained from diabetic patients. The self-powered glucose biosensor is exploited to optimize the assay parameters for sensing plasma glucose levels. In particular, the biofuel cell component of the system at pH 7.4, 37 °C generates a power density directly proportional to plasma glucose and exhibited a maximum power density of 0.462 mW·cm −2 at a cell voltage of 0.213 V in 5 mM plasma glucose. Plasma glucose is further sensed by monitoring the charge/discharge frequency (Hz) of the integrated capacitor functioning as the transducer. With this method, the plasma glucose is quantitatively detected in 100 microliters of human plasma with unprecedented sensitivity, as high as 104.51 ± 0.7 Hz·mM −1 ·cm −2 and a detection limit of 2.31 ± 0.3 mM. The results suggest the possibility to sense human plasma glucose at clinically relevant concentrations without the use of an external power source.

Suggested Citation

  • Gymama Slaughter & Tanmay Kulkarni, 2019. "Detection of Human Plasma Glucose Using a Self-Powered Glucose Biosensor," Energies, MDPI, vol. 12(5), pages 1-10, March.
    • Handle: RePEc:gam:jeners:v:12:y:2019:i:5:p:825-:d:210306
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    1. Cheong Hoon Kwon & Sung-Ho Lee & Young-Bong Choi & Jae Ah Lee & Shi Hyeong Kim & Hyug-Han Kim & Geoffrey M. Spinks & Gordon G. Wallace & Márcio D. Lima & Mikhail E. Kozlov & Ray H. Baughman & Seon Jeo, 2014. "High-power biofuel cell textiles from woven biscrolled carbon nanotube yarns," Nature Communications, Nature, vol. 5(1), pages 1-7, September.
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