What QIAGEN kit can I use to isolate DNA from food products to test for genetically modified organisms (GMOs)?
For plant-based foods, such as soy, tofu, and cookies, DNA isolation has been successfully carried out using the DNeasy Plant Mini Kit. The QIAamp DNA Stool Mini Kit has been used for isolation of genomic DNA from highly processed foods, and foods that contain high levels of PCR inhibitors, such as chocolate. For meat and processed meats, such as sausage, we suggest the DNeasy Blood & Tissue Kit.
See also the QIAGEN News article "Detection of genetically modified soybean and maize in raw and processed foodstuffs", and the accompanying editorial "Detecting genetically modified organisms in food."