Monitoring of Bt11 and Bt176 genetically modified maize in food sold commercially in Brazil from 2005 to 2007

Abstract

Bt11 and Bt176 GM maize lines were not detected by specific PCR in 81 maize-derived food samples sold in Brazil from 2005 to 2007, before the commercial release of GM maize in Brazil. These Brazilian food industries were in compliance with the rules stipulated by the current legislation with respect to consumer requirements about GMO labeling.

Detection of genetically modified maize events in Brazilian maize-derived food products

“…Cardarelli et al (2005) did not detect MON810 and Bt176 maize in pasta and pet food samples. Dinon, De Melo and Arisi (2008) and Dinon, Bosco and Arisi (2010) did not find Bt11, Bt176 and MON810 either in maize flour, corn meal, maize flour flakes, and polenta samples sold in Brazilian markets from 2005 to 2007. Greiner and Konietzny (2008) published data on 100 processed products containing maize that were analyzed every year from 2000 to 2005 and found 8% of the samples positive for Bt176, Bt11, MON810, and T25 maize.…”

“…4860 of April 2003(BRASIL, 2003) to ensure that consumers are properly informed about the presence of genetically modified ingredients in the food products. Since then, some studies on the detection and quantification of levels of genetically modified soybean and maize in Brazilian food products have been published (BRANQUINHO; FERREIRA; CARDARELLI-LEITE, 2010;BROD et al, 2007;BROD;CARDARELLI et al, 2005;DINON et al, 2010;FERREIRA;BRANQUINHO;CARDARELLI-LEITE, 2009;GREINER;KONIETZNY, 2008;MARCELINO;GUIMARÃES;BARROS, 2007). The methods used are based on the Polimerase Chain Reaction (PCR), which is the analytical system widely adopted in GMO detection, and the quantifications are based on real-time PCR (qPCR) that targets different genetic elements, including the cauliflower mosaic virus 35S promoter (P-35S) ( VAN DEN EEDE, 2010).…”

Gmo labeling in food products in montevideo, uruguay

“…This result is consistent with the fact that to date, in the world, only 7 corn and 2 soybean events have been authorized that contain this transgene, and they are grown in the United States, Japan and the Philippines. Only one of these events, the Bt176 maize variety iscommerciallyauthorized in Argentina (Biosafety Clearing-House 2017).The low frequency of the bar gene presence, and that of Bt176 event in mass consumption foods made from corn has already been reported in similar studies (Dinon et al, 2010;Gonzales Ortega et al, 2017).…”

Quantitative descriptive analysis of Italian polenta produced with different corn cultivars

“…Although corn composition has been well defined and the chemical/sensory characteristics of some derived products such as tortillas or popcorn have also been outlined,4–11 the scientific literature concerning studies on polenta is poor and only concerns chemical parameters 12…”