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- Title
長野県松本地域で販売された絹ごし豆腐、木綿豆腐、焼き豆腐、寒天豆腐 における、RRS、RRS2 ならびにLLS 混入状況の網羅的調査結果
- Authors
沖嶋直子; 瀧本友里加; 竹内日香瑠; 福冨眞緒; 安永知織
- Abstract
We previously reported the rate of Kinugoshi tofu containing detectable genetically modified (GM) soybean (RRS) among commercially available products in the Matsumoto City area by detecting the RRS-specific sequence. Since Kinugoshi tofu was the only sample analyzed, and RRS was only detectable using the genetic techniques available at that time, we evaluated the rate of GM soybeans using tofu products commercially available in the Matsumoto City area. In the present study, we employed the specific sequences of other GM Soybeans (RRS2 and LLS) to detect GM soybeans using real-time PCR. We analyzed 163 samples of Kinugoshi tofu, 64 of Momen tofu, 4 of Grilled tofu, and 1 of Kanten tofu available in the Matsumoto City area between November 2014 and January 2016. Among these samples, 14 of Kinugoshi tofu and 1 of Momen tofu were positive for RRS, while 7 of Kinugoshi tofu and 3 of Momen tofu were positive for RRS2. There were no positive samples for LLS. The present results showed that among the GM soybeans included in tofu in the current market in Japan, RRS was dominant. LLS was less common than RRS and RRS2, which are Roundup-herbicide resistant GM soybeans. These results may reflect the cultivated amounts of the GM soybeans in USA, Canada, and Brazil because these countries are the major soybean trading partners of Japan.
- Publication
Japanese Journal of Food Chemistry & Safety, 2019, Vol 26, Issue 1, p42
- ISSN
1341-2094
- Publication type
Article