How to identify genetically modified and non-GM foods
Genetically modified foods have been ingested by almost everyone. The safety debate on these foods has continued. The only genetically modified crops approved in China are cotton and papaya. The genetically modified crops approved for processing raw materials are soybeans, corn and rapeseed. , cotton and sugar beets, have never approved the commercial production of any genetically modified staple food. Strictly speaking, crops, vegetables, fruits, animals, etc., cannot be accurately distinguished from external forms. It is necessary to distinguish whether genetic modification can only be distinguished by professional instruments and scientific detection methods by professionals with conscience. Also, detection has become more and more difficult. DNA detection is currently the most commonly used and most effective method for the detection of genetically modified foods. Among them, real-time quantitative PCR (qPCR) technology is currently the mainstream, and related products occupy half of the global molecular diagnostic market. However, due to the complexity of the nucleic acid detection process, the high price of the nucleic acid amplification signal detection device, and the high requirements on the laboratory hardware conditions, it is limited to the high-end market, and the promotion is difficult, and the needs of the grassroots and testing institutions are not met. Based on this situation, Professor Shi Lei, the chief scientist of Diao Biotechnology, led his team to develop a new constant-temperature fluorescent nucleic acid amplification molecular detection platform. The equipment is simple, fast and accurate. The whole process of the reaction is constant at 63 °C. The operation is simple and easy to promote. It is molecular detection. Another revolution in technology has broken through the existing bottlenecks in transgenic detection technology, and has truly opened the market for molecular detection methods at the grassroots level. We look forward to the near future, the foods we saw in the supermarket shopping have been tested and clearly marked, no food safety hazards, people can eat with confidence, drink peace of mind. Introduce several ways to distinguish between genetically modified and genetically modified foods that are frequently consumed: carrot Non-GMO carrots: The surface is uneven, generally not straight, from coarse to fine from head to tail. And the head is protruding outwards. Genetically modified carrots: The surface is relatively smooth, generally straight, and its tail is sometimes thicker than the middle. And the head is concave inside. Note: Carrots are only available in autumn and winter, and summer is generally genetically modified. Soy Non-GMO soybeans: oval shape, somewhat flat. The navel is light brown. Beans vary in size. The soy milk that was beaten was milky white. Genetically modified soybeans: round and round. The navel is yellow or yellowish brown. The beans are about the same size. The soy milk that was beaten was a bit yellow, and the tofu made with this bean had a little yellow color. Simple test method: genetically modified soybeans do not germinate! Can be tested with water! Local soybeans will germinate after soaking in water for three days! Genetically modified soybeans will not germinate, but only individuals will inflate. From this germination test, one can find that these genetically modified soybeans are one-time fruits, and their germs are not vital in nature, and therefore, there is no ability to continue the offspring. Equivalent to a person can be pregnant normally, but every time is a stillbirth, which means that the continuation of life ends here. If human beings eat a variety of genetically modified foods on a large scale for a long time, the genetically modified fragments that endanger humans will inevitably have subtle influences until they change the normal genes of human beings, and the resistance is reduced, strange diseases, or loss of fertility are reasonable. It is. Rice The area where the legal right to plant GM rice is obtained in China is Hubei. Be alert to the slender, bright rice. It is easy to be confused with the “long grain incense†in the northeast. When you buy, you must see the origin. corn Genetically modified corn: sweet and crisp, full, beautiful, with similar head and tail particles. tomato Genetically modified tomatoes: bright red color, hard fruit, not easy to crack potato Non-GMO potatoes: The appearance is ugly, the color is relatively deep, the surface is pitted, and the skin color is irregular. After peeling, the surface will soon become darker and the skin is white. Genetically modified potatoes: The surface is smooth, the pits are very shallow, and the color is light. After peeling, there was no significant change in the surface. Test method: first peel the skin and see the change before deciding to eat or not.
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