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Updated: May 7, 2026

Qualitative Identification of Carboxylic Acids, Boronic Acids, and Amines Using Cruciform Fluorophores
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Pattern-based colorimetric sensor array chip for discrimination of Baijiu aromas.

Zhengfan Shui1, Jiaying Zhao1, Jia Zheng2

  • 1Key Laboratory for Biorheological Science and Technology of Ministry of Education, Bioengineering College of Chongqing University, Chongqing 400044, PR China.

Food Chemistry
|February 24, 2024
PubMed
Summary
This summary is machine-generated.

This study presents a novel, low-cost colorimetric sensor array chip for identifying complex gas mixtures, specifically Baijiu aromas. The sensor accurately distinguishes authentic Baijiu from fakes, overcoming limitations of current detection methods.

Keywords:
BaijiusColorimetric sensor array chipNanoparticlesPattern recognitionVolatile organic compounds

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Area of Science:

  • Analytical Chemistry
  • Materials Science
  • Sensor Technology

Background:

  • Accurate identification of complex gas mixtures is challenging due to limitations in existing detection methods.
  • Baijiu aroma analysis requires sensitive and reliable identification techniques to ensure quality control and authenticity.

Purpose of the Study:

  • To develop a low-cost, sensitive pattern-based colorimetric sensor array chip for identifying Baijiu aroma.
  • To overcome the limitations of current gas mixture identification methods and olfactory fatigue in expert analysis.

Main Methods:

  • Fabrication of a colorimetric sensor array chip utilizing three nanomaterials: gold nanoparticles (AuNPs), molybdenum disulfide (MoS2), and ZIF-8.
  • These nanomaterials were employed to adsorb gas molecules and enhance reactions with trace gases.
  • Hierarchical cluster analysis (HCA) was used to analyze sensor array responses for pattern recognition.

Main Results:

  • The sensor array chip achieved recognition of Baijiu aromas within 5 minutes.
  • Hierarchical cluster analysis (HCA) demonstrated no confusion or errors in 80 tests across five trials involving 16 commercial Baijius.
  • The system successfully identified counterfeit Baijius with similar ingredients, showcasing high analytical capability.

Conclusions:

  • The developed colorimetric sensor array chip offers a rapid, sensitive, and accurate method for Baijiu aroma identification.
  • This technology provides a significant potential for the quality control of Baijiu and the detection of adulterated products.
  • The sensor array effectively addresses the challenges posed by complex gas mixtures and olfactory fatigue.