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Buckypaper-Based Nanostructured Sensor for Port Wine Analysis.

Luiza Ferreira1, Paula Pinheiro2, Newton Barbosa Neto1

  • 1Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Universidade Federal do Pará, Ananindeua 67130-660, PA, Brazil.

Sensors (Basel, Switzerland)
|December 23, 2022
PubMed
Summary
This summary is machine-generated.

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A novel buckypaper sensor made from multiwalled carbon nanotubes and cellulose fibers effectively detects wine adulteration. This electronic gadget offers a low-cost, rapid method for identifying contaminants like water and alcohol in beverages.

Area of Science:

  • Materials Science
  • Analytical Chemistry
  • Sensor Technology

Background:

  • Electronic gadgets are crucial for detecting beverage fraud, which poses health and economic risks.
  • Port wine adulteration with water and ethyl alcohol is a significant concern.

Purpose of the Study:

  • To develop and apply a buckypaper (BP) sensor for analyzing Port wine adulterated with distilled water and ethyl alcohol.
  • To evaluate the sensor's ability to detect and discriminate adulterants.

Main Methods:

  • Fabrication of a buckypaper sensor using functionalized multiwalled carbon nanotubes (MWCNTs)/cellulose fibers.
  • Characterization of buckypaper morphology using scanning electron microscopy.
  • Analysis of sensor response via normalized relative resistance change and Principal Component Analysis (PCA).
Keywords:
chemoresistive sensormultiwalled carbon nanotubeswine adulteration

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Main Results:

  • The buckypaper sensor demonstrated a higher response (0.75 ± 0.16) for 10 vol.% water adulteration.
  • A mean response time of 10.0 ± 3.60 s and recovery of ~17.2 min were observed for 5 vol.% alcohol adulteration.
  • PCA confirmed the sensor's capability to recognize and discriminate between analytes and adulterants.

Conclusions:

  • The MWCNTs/cellulose fiber-based buckypaper sensor shows potential for detecting Port wine adulteration.
  • The developed sensor is a low-cost and easy-to-handle multisensor for beverage analysis.
  • This technology contributes to ensuring beverage safety and authenticity.