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| Research Progress on the Conversion Factor of Quantity Value for Genetically Modified Organism Quantification |
| LIU Yuanyuan1,LI Jiali2,JI Shuaishuai1,GAO Yunhua3,LIU Danmei1,WANG Di3 |
1. College of Life Sciences, Shanxi University, Taiyuan, Shanxi 030000, China
2. College of Pharmacy and Bioengineering, Chongqing University of Technology, Chongqing 400054, China
3. Center for Advanced Measurement Science, National Institute of Metrology, Beijing 100029, China |
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Abstract The quantitative results of GM content determined by PCR-based technology are mainly copy number ratio, whereas the labeling regulation specified that the quantitative result must be expressed in the form of a mass fraction. The lack of consistency in measurement unit hinders direct decision-making based on test results. It is urgent to investigate the quantity value relationship between the two measurement scales, and establish a methodology for determining the “conversion factor” value, thus ensuring the direct comparison between quantitative results and labeling threshold. The international labeling systems of genetically modified product are summarized, key affect factors for determining the “conversion factor” and characterization method established by the European Union are systematically analyzed, and the importance of conducting the relevant study in China is also discussed. This review can provide reference for the effective implementation of the labeling system in China.
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Received: 08 October 2023
Published: 06 June 2024
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2024, Vol. 45 
