Abstract
The cultivation area and diversity of genetically modified (GM) crop varieties worldwide is increasing rapidly. Taking Turkey as an example of a country with tight restrictions on the import and use of GM crops but limited resources for product monitoring, we developed a cost-effective 3-tier screening protocol, and tested 110 retail food products and 13 animal feeds available in 2016–2017 for GM ingredients. No evidence was found for the presence of GM wheat or rice in the foodstuffs tested; however, 6 feeds and 3 food products containing soybean and/or maize were positive for one or more GM elements. GM events present in positive samples were identified by event-specific PCR and quantified by real-time PCR. We also compared the results with previous surveys in Turkey. Overall, we observed consistent use of GM animal feeds; however, these were not labelled as GM at the point of sale. Occasional food products also tested positive for GM ingredients, usually at low concentrations that could be attributed to accidental contamination.
Abbreviations
- CRM:
-
Certified reference material
- CTAB:
-
Cetyltrimethylammonium bromide
- FAM:
-
6-Carboxyfluorescein
- GMO:
-
Genetically modified organism
- qPCR:
-
Quantitative polymerase chain reaction
- RRS:
-
Roundup ready soybean
- SSII:
-
Starch synthase II
- SPS:
-
Sucrose phosphate synthase
- TAMRA:
-
Carboxytetramethylrhodamine
References
Akpinar BA, Avsar B, Lucas SJ, Budak H (2012) Plant abiotic stress signaling. Plant Signal Behav 7:1450–1455. https://doi.org/10.4161/psb.21894
Al-Hmoud N, Al-Husseini N, Ibrahim-Alobaide MA et al (2014) Unconventional P-35S sequence identified in genetically modified maize. GM Crops Food 5:58–64. https://doi.org/10.4161/gmcr.27542
Arvas Y, Kaya M (2018) Detection of genetically modified organisms in rice products by DNA-based techniques in Turkish Market. In: 1. International Agricultural Science Congress. Van Yuzuncu Yıl University, Van
Elsanhoty RM, Al-Turki AI, Ramadan MF (2013) Prevalence of genetically modified rice, maize, and soy in Saudi food products. Appl Biochem Biotechnol 171:883–899. https://doi.org/10.1007/s12010-013-0405-x
Erkan I, Dastan K (2017) Real-time PCR detection of genetically modified organisms in several food products and their environmental effects in Turkey. Fresenius Environ Bull 26:2589–2595
European Commission (2003a) Regulation (EC) No 1829/2003 of the European Parliament. Off J Eur Union L268:1–23
European Commission (2003b) Regulation (EC) No 1830/2003 of the European Parliament. Off J Eur Union L268:24–28
Fraiture M-A, Herman P, Taverniers I et al (2015) Current and new approaches in GMO detection: challenges and solutions. Biomed Res Int 2015:1–22. https://doi.org/10.1155/2015/392872
Gürakan GC, Aydin G, Yilmaz R (2011) Qualitative detection of GM maize (Bt11) in food and feed sold commercially in Turkey by PCR based methods. Indian J Biotechnol 10:143–146
Lamichhane SA (2014) Genetically modified foods - Solution for food security. IJGEB 5:43–48
Leitch IJ, Johnston E, Pellicer J et al. (2019) Angiosperm DNA C-values database (release 9.0, Apr 2019). https://cvalues.science.kew.org/. Accessed 13 Sept 2019
Lucas SJ (2018) The application of nucleic acid microarrays for the detection of genetically modified organisms. In: Mahgoub SEO, Nollet L (eds) Testing and analysis of GMO-containing foods and feed. CRC Press, London, pp 205–222
Mandaci M, Çakir Ö, Turgut-Kara N et al (2014) Detection of genetically modified organisms in soy products sold in Turkish market. Food Sci Technol. https://doi.org/10.1590/1678-457X.6441
Özgen Arun Ö, Yilmaz F, Muratoĝlu K (2013) PCR detection of genetically modified maize and soy in mildly and highly processed foods. Food Control 32:525–531. https://doi.org/10.1016/j.foodcont.2013.01.023
Tengel C, Schüssler P, Setzke E et al (2001) PCR-based detection of genetically modified soybean and maize in raw and highly processed foodstuffs. Biotechniques 31:426–429
Turkec A, Lucas SJ, Karlik E (2016a) Monitoring the prevalence of genetically modified (GM) soybean in Turkish food and feed products. Food Control 59:766–772. https://doi.org/10.1016/j.foodcont.2015.06.052
Turkec A, Lucas SJ, Karlik E (2016b) Monitoring the prevalence of genetically modified maize in commercial animal feeds and food products in Turkey. J Sci Food Agric 96:3173–3179. https://doi.org/10.1002/jsfa.7496
Wunderlich S, Gatto KA (2015) Consumer perception of genetically modified organisms and sources of information. Adv Nutr 6:842–851. https://doi.org/10.3945/an.115.008870
Acknowledgements
This research was financially supported by an internal grant from Uludağ University Scientific Research Projects Unit (Grant Number 2014/1) and by Nilay Agricultural Products Ltd.
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BA conducted experiments, analyzed data and drafted the manuscript. SS collected samples and conducted experiments. AT conceived the study, collected samples and assisted with data analysis. SJL planned the experimental work, analyzed data and revised the manuscript. All authors approved the final manuscript.
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Avsar, B., Sadeghi, S., Turkec, A. et al. Identification and quantitation of genetically modified (GM) ingredients in maize, rice, soybean and wheat-containing retail foods and feeds in Turkey. J Food Sci Technol 57, 787–793 (2020). https://doi.org/10.1007/s13197-019-04080-2
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DOI: https://doi.org/10.1007/s13197-019-04080-2