Compositional Analysis of the Transgenic Potato with High-level Phytase Expression

Bo-Chou Chen¹, Huan-Yu Lin¹, Jen-Tao Chen¹, Mei-Li Chao¹, Hsin-Tang Lin² and Wen-Shen Chu^1,

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 address: Graduate Institute of Food Safety, National Chung Hsing University, Taichung 402, Taiwan)

Cite this paper:
Bo-Chou Chen, Huan-Yu Lin, Jen-Tao Chen, Mei-Li Chao, Hsin-Tang Lin and Wen-Shen Chu. Compositional Analysis of the Transgenic Potato with High-level Phytase Expression. Journal of Food and Nutrition Research. 2020; 8(5):231-237. doi: 10.12691/jfnr-8-5-3

Abstract

Phosphorus in the phytate form is undigestible by non-ruminant animals, causing environmental problems. The transgenic potato line 2-1 was generated with high phytase expression, and it could be a potential feed to improve phytate-P digestibility in non-ruminant animals. Compositional characteristics of genetically modified crops are one of key steps in safety assessment. To evaluate the feed safety of the transgenic potato line 2-1, the comparative analysis of compositions between the transgenic line 2-1 and the conventional line CK potato tubers for two consequent years was conducted. Only proline and zinc contents were shown to be significantly lower in both years, but within the database range. Trypsin inhibitors, lectins, and glycoalkaloids, including α-chaconines, and α-solanines, were also analyzed, and the contents had no significant differences between the two potato lines. The results suggested that the composition of the transgenic potato line 2-1 is substantially equivalent to that of the conventional line CK.

Keywords:
phytase potato composition genetically modified crop glycoalkaloid

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