Compositional analysis of genetically modified soybeans placed on Taiwan market

Compositional analysis of genetically modified soybeans placed on Taiwan market

Huan-Yu Lin1, Jen-Tao Chen1, Mei-Li Chao1, Bo-Chou Chen1, Jo-Chi Wang1, Hsuen-Chun Liao1, Hui-Wen Chang1, Hsin-Tang Lin2 and Wen-Shen Chu1*

1Bioresource Collection and Research Center, Food Industry Research and Development Institute, Hsinchu 300, Taiwan; 2Food and Drug Administration, Ministry of Health and Welfare, Taipei 115, Taiwan(Present: Graduate Institute of Food Safety, National Chung Hsing University, Taichung 402, Taiwan)

International Journal of Food and Nutrition Research

Soybean is an important protein source for consumers in Taiwan. Soybean production in Taiwan is not self-sufficient. Taiwan imports 2.5 million tons of soybeans annually. More than 90% of the imported soybeans are genetically modified (GM). To provide an objective assessment on safety of GM soybean and for post-market monitoring, we conducted a comparative assessment on key component compositions between imported GM soybean and local non-GM soybean from Taiwan. All the soybean samples were purchased from the local market to simulate the status of Taiwanese consumers in purchasing soybeans. The GM soybean samples were herbicide-tolerant soybeans. The content of the proximate, the amino acid composition, the fatty acid composition, vitamins, minerals, antinutritional factors, and isoflavones of soybean samples were analyzed. Most contents of the key components of the GM soybean had no significant difference with those of the non-GM soybean. However, the contents of ash, crude protein, amino acids, myristic acid, behenic acid, phosphorus, iron and phytic acid were significantly lower in the GM soybean samples, and the contents of crude fat, margaric acid, and stearic acid were significantly higher in the GM soybean samples. But they were all within the range of reference values. A total of 314 pesticide residues in each of the samples were analyzed. Glyphosate residue was detected only in GM soybean samples, but it is well below the threshold prescribed by the government. In summary, the GM soybean samples purchased from Taiwan market were shown to be substantially equivalent to non-GM soybeans.

Keywords:GM soybean, key component, substantially equivalent

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How to cite this article:
Huan-Yu Lin, Jen-Tao Chen, Mei-Li Chao, Bo-Chou Chen, Jo-Chi Wang, Hsuen-Chun Liao, Hui-Wen Chang, Hsin-Tang Lin and Wen-Shen Chu. Compositional analysis of genetically modified soybeans placed on Taiwan market. International Journal of Food and Nutrition Research, 2019; 3:31. DOI:10.28933/ijfnr-2019-08-2205


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