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Smartphone based meat freshness detection.

Isabel M Perez de Vargas-Sansalvador1, Miguel M Erenas1, Antonio Martínez-Olmos2

  • 1ECsens, Department of Analytical Chemistry, University of Granada, Granada, 18071, Spain; Unit of Excellence in Chemistry Applied to Biomedicine and the Environment of the University of Granada, Spain.

Talanta
|May 28, 2020
PubMed
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This summary is machine-generated.

A new colorimetric sensor integrated into pork packages detects spoilage by tracking carbon dioxide (CO2) levels. Smartphone analysis of the sensor

Area of Science:

  • Food Science
  • Analytical Chemistry
  • Biosensors

Background:

  • Meat spoilage is a significant concern, leading to economic losses and food safety issues.
  • Existing methods for assessing meat freshness can be time-consuming or require specialized equipment.
  • Developing rapid, accessible, and reliable freshness indicators is crucial for the food industry.

Purpose of the Study:

  • To develop and integrate a novel colorimetric sensor for monitoring pork freshness.
  • To correlate sensor color changes with bacterial growth and carbon dioxide (CO2) production during spoilage.
  • To validate smartphone-based detection as a user-friendly method for assessing packaged pork quality.

Main Methods:

  • A non-toxic colorimetric sensor cocktail (2 μL) was prepared and integrated into pork loin packages.
Keywords:
Bacterial growingColorimetric CO(2) gas sensorFood qualityFreshness sensorMeat spoilagePork meat

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  • The sensor was designed to change color in response to increasing CO2 levels, indicative of bacterial spoilage.
  • Sensor color was analyzed using smartphone photography and a custom application to quantify grayscale values.

    • Main Results:

    • The colorimetric sensor successfully indicated rising CO2 levels associated with pork spoilage.
    • Sensor color change correlated with bacterial population and, consequently, meat freshness.
    • Smartphone-based measurements showed good agreement with a reference method (Checkpoint Analyzer).

    Conclusions:

    • The integrated colorimetric sensor offers a promising tool for real-time monitoring of pork freshness.
    • Smartphone-based analysis provides a simple, rapid, and potentially low-cost method for quality assessment.
    • This technology can serve as a basis for a quick quality test for packaged pork.