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Updated: Nov 10, 2025

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Development of a Systematic qPCR Array for Screening GM Soybeans.

Saet-Byul Park1, Ji-Yeong Kim1, Do-Geun Lee1

  • 1Institute of Life Sciences and Resources and Graduate School of Biotechnology, Kyung Hee University, Yongin 17104, Korea.

Foods (Basel, Switzerland)
|April 3, 2021
PubMed
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A new quantitative polymerase chain reaction (qPCR) array and prediction system efficiently detect genetically modified (GM) soybeans. This method enhances the tracking of GM soybean events in processed foods, ensuring accurate detection beyond standard screening. Keywords: GM soybeans, qPCR, detection, tracking, processed foods.

Area of Science:

  • Agricultural Biotechnology
  • Molecular Biology
  • Food Science

Background:

  • Standard screening methods for genetically modified organisms (GMOs) using the 35S promoter and nos terminator are insufficient for all GM soybean events.
  • Accurate and rapid detection of specific GM soybean events is crucial for regulatory compliance and consumer information.

Purpose of the Study:

  • To develop a rapid and reliable method for tracking specific GM soybean events.
  • To create a quantitative polymerase chain reaction (qPCR) array and prediction system for enhanced GM soybean detection.

Main Methods:

  • Development of a qPCR array with eight screening assays targeting various GM soybean events.
  • Specificity testing using 17 approved GM soybean events in Korea.
  • Sensitivity determination ranging from 0.01% to 0.05% using DNA mixtures.
Keywords:
GMOsmonitoringprediction systemqPCRscreening

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  • Validation by three independent experimenters.
  • Application testing on 23 processed soybean food products.

    • Main Results:

    • The qPCR array demonstrated high specificity and sensitivity for detecting approved GM soybean events.
    • The developed system successfully identified GM soybean presence in 13 out of 23 processed food samples.
    • The prediction system, combined with screening results, proved effective for tracing GM soybean events.

    Conclusions:

    • The novel qPCR array and prediction system offer a rapid, convenient, and reliable solution for GM soybean detection.
    • This approach significantly improves the ability to trace the presence or absence of specific GM soybean events in food products.
    • The developed method addresses the limitations of conventional screening, providing comprehensive tracking capabilities.