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Related Experiment Videos

A novel lactate biosensor.

Tong Jijun1, Hu Jie, Huang Zhongchao

  • 1Nat. Biosensor Special Lab., Zhejiang Univ., Hangzhou.

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
|February 7, 2007
PubMed
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A new disposable biosensor accurately measures lactate in bio-fluids using lactate oxidase and carbon nanotubes. This rapid, convenient sensor offers improved performance for lactate detection.

Area of Science:

  • Biomedical Engineering
  • Analytical Chemistry
  • Materials Science

Background:

  • Lactate measurement is crucial for diagnosing various medical conditions.
  • Existing lactate detection methods can be time-consuming or require complex procedures.
  • Development of rapid, point-of-care lactate biosensors is highly desirable.

Purpose of the Study:

  • To develop and characterize a novel disposable biosensor for rapid and accurate lactate determination.
  • To evaluate the performance of the biosensor utilizing modified carbon nanotubes (CNT) as an electron mediator.

Main Methods:

  • Fabrication of a disposable lactate biosensor using screen-printing techniques.
  • Immobilization of lactate oxidase (LOD) onto electrodes modified with ferricyanide and CNT.

Related Experiment Videos

  • Measurement of lactate in whole blood and bio-fluids via capillary action with micro-cavity volume control.

    • Main Results:

    • The biosensor demonstrated a linear detection range of 1-15 mmol/l for lactate.
    • Achieved high precision with a standard deviation of 0.2 mmol/l.
    • Incorporation of CNT significantly enhanced the sensor's response characteristics compared to sensors without CNT.

    Conclusions:

    • The developed disposable lactate biosensor provides a rapid, accurate, and convenient method for lactate quantification.
    • The use of modified carbon nanotubes as an electron mediator improves biosensor performance.
    • This novel biosensor holds potential for point-of-care applications in clinical diagnostics.