Transgenic Analysis of Soybean Products Sold in Chaozhou City
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Abstract:
In order to understand the condition of genetically modified soybean products on the market in Chaozhou City, the soybean products in the main markets were randomly purchased for testing. The DNA components of soybean products were extracted by modified CTAB method, and OD values were measured by nucleic acid protein analyzer. The exogenous genes CP4-EPSPS, NOS and CaMV35S were detected by qualitative and real-time quantitative PCR. A total of 29 soybean products sold in the main markets of Chaozhou City were investigated and tested. The results showed that the concentration and purity of DNA extracted from soybean products were higher, OD260 nm/OD280 nm ranged from 1.9 to 2.1, and the concentration of extracted DNA reached more than 200 ng/μL, which could basically meet the test requirements. More than half of the tested soybean products contain genetically modified ingredients. Except for Darunfa Supermarket’s soybean products, there are no food labels for soybean products, and whether GMF labels are required for all soybean products or not. The implementation of GMF labeling system is still in the initial stage, and a strong market supervision mechanism should be established in China. Therefore, we must attach great importance to the implementation of the GMF labeling system and the corresponding market supervision.
